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The Clydach Gorge (Brynmawr to Abergavenny or vice versa) Walk

Wild and dramatic Clydach Gorge: waterfalls, cascades, fast-flowing waters, ancient beechwoods as well as an ironworks' ruins and an elevated railway line

Brecon Beacons

Hiking weather forecast

Brecon Beacons hourly weather (Visual Crossing)

Sunset: 20:04. Dusk: 20:40. Dark: 21:23. Moon 99% (dusk to dawn)

Updated: Fri, 11-Apr at 17:39

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Sat, 12 Apr 0% 0% 0% 0% 0% 0% 0% 0% 45% 45% 45% 45% 45% 45% 39% 39%
Sun, 13 Apr 0% 0% 48% 48% 48% 48% 48% 48% 26% 26% 26% 26% 26% 26% 3% 3%
Mon, 14 Apr 10% 10% 58% 58% 58% 58% 58% 58% 68% 68% 68% 68% 68% 68% 16% 16%
Tue, 15 Apr 7% 7% 26% 26% 26% 26% 26% 26% 74% 74% 74% 74% 74% 74% 3% 3%
Wed, 16 Apr 3% 3% 42% 42% 42% 42% 42% 42% 61% 61% 61% 61% 61% 61% 7% 7%
Thu, 17 Apr 16% 16% 29% 29% 29% 29% 29% 29% 55% 55% 55% 55% 55% 55% 42% 42%
Fri, 18 Apr 39% 39% 48% 48% 48% 48% 48% 48% 42% 42% 42% 42% 42% 42% 29% 29%
Sat, 19 Apr 19% 19% 29% 29% 29% 29% 29% 29% 45% 45% 45% 45% 45% 45% 16% 16%
Sun, 20 Apr 16% 16% 26% 26% 26% 26% 26% 26% 39% 39% 39% 39% 39% 39% 19% 19%
Mon, 21 Apr 16% 16% 39% 39% 39% 39% 39% 39% 45% 45% 45% 45% 45% 45% 19% 19%
Tue, 22 Apr 19% 19% 32% 32% 32% 32% 32% 32% 39% 39% 39% 39% 39% 39% 10% 10%
Wed, 23 Apr 10% 10% 26% 26% 26% 26% 26% 26% 48% 48% 48% 48% 48% 48% 23% 23%
Thu, 24 Apr 10% 10% 42% 42% 42% 42% 42% 42% 52% 52% 52% 52% 52% 52% 23% 23%
Fri, 25 Apr 16% 16% 29% 29% 29% 29% 29% 29% 32% 32% 32% 32% 32% 32% 23% 23%

Percentages are the chance of rain.

Weather data by Visual Crossing

Brecon Beacons hourly weather (Open Meteo)

Sunset: 20:04. Dusk: 20:40. Dark: 21:23. Moon 99% (dusk to dawn)

Updated: Fri, 11-Apr at 17:37

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 0% 0% 0% 0% 0%
Sat, 12 Apr 0% 0% 0% 0% 0% 9% 22% 35% 49% 64% 71% 66% 53% 41% 31% 22%
Sun, 13 Apr 🌫 67% 80% 82% 77% 71% 63% 53% 45% 42% 41% 41% 42% 43% 41% 31% 18%
Mon, 14 Apr 43% 57% 65% 71% 76% 81% 86% 90% 93% 96% 94% 86% 73% 61% 50% 39%
Tue, 15 Apr 57% 57% 53% 48% 47% 53% 63% 71% 77% 81% 82% 79% 74% 65% 51% 33%
Wed, 16 Apr 11% 10% 10% 11% 16% 29% 45% 59% 69% 75% 76% 68% 54% 41% 29% 18%
Thu, 17 Apr 10% 12% 13% 15% 18% 23% 29% 35% 41% 48% 54% 59% 64% 65% 62% 55%
Fri, 18 Apr 31% 33% 36% 39% 42% 45% 48% 51% 53% 55% 56% 57% 57% 57% 55% 52%
Sat, 19 Apr 28% 29% 32% 36% 41% 46% 51% 55% 58% 59% 60% 61% 61% 59% 55% 50%
Sun, 20 Apr 40% 43% 45% 46% 47% 48% 48% 49% 50% 51% 52% 52% 52% 51% 48% 45%
Mon, 21 Apr 30% 31% 32% 33% 35% 37% 38% 41% 46% 51% 56% 60% 64% 65% 61% 55%
Tue, 22 Apr 34% 37% 40% 42% 45% 48% 50% 53% 56% 59% 61% 63% 64% 63% 60% 54%
Wed, 23 Apr 30% 31% 32% 34% 36% 38% 39% 41% 43% 44% 45% 46% 46% 45% 42% 39%
Thu, 24 Apr 31% 33% 36% 40% 43% 47% 50% 53% 55% 56% 57% 57% 57% 55% 51% 45%
Fri, 25 Apr 25% 27% 29% 32% 35% 38% 41% 43% 44% 45% 45% 45% 44% 43% 41% 37%
Sat, 26 Apr 10% 10% 14% 21% 28% 35% 42% 48% 51% 52% 53% 53% 53% 52% 50% 47%

Percentages are the chance of rain.

Weather data by Open-Meteo

Brecon Beacons hourly weather (Met Office)

Sunset: 20:04. Dusk: 20:40. Dark: 21:23. Moon 99% (dusk to dawn)

Updated: Fri, 11-Apr at 17:00

06 09 12 15 18 21
Today 0% 0%
Sat, 12 Apr 0% 4% 5% 11% 76% 🌫 49%
Sun, 13 Apr 🌫 20% 7% 20% 12% 19% 17%
Mon, 14 Apr 43% 60% 61% 57% 15% 16%
Tue, 15 Apr 16% 17% 38% 37% 16% 9%
Wed, 16 Apr 10% 13% 18% 17% 13% 15%
Thu, 17 Apr 10% 10% 13% 11% 11% 14%
Fri, 18 Apr 17% 17% 16% 21%

Percentages are the chance of rain.

Weather data by Met Office

Regional weather (Met Office)

Sunset: 20:04. Dusk: 20:40. Dark: 21:23. Moon 99% (dusk to dawn)

Updated: Fri, 11-Apr at 17:38

Wales

Warm on Saturday, cooler on Sunday, then showery next week.

  • A sunny end to the day for most, but a continuing risk of fog on Irish Sea coasts, especially in Cardigan Bay
  • Clear skies for most overnight and turning chilly with a slight frost in some low-lying rural areas
  • Minimum Temperature 2C

Saturday:

  • A bright start with some sunshine, this turning hazier through the morning
  • Cloudier in the afternoon with showers possible in the west
  • Feeling generally cooler, still warm in the east
  • Maximum Temperature 18C

Outlook for Sunday to Tuesday:

  • Sunny spells and isolated showers on Sunday, these more numerous and occasionally heavy on Monday, though some places staying largely dry
  • Longer spells of rain possible Tuesday
  • Not as warm

UK Day 6-7 and week 2

  • Much more mixed weather conditions than of late, with low pressure systems and their associated areas of rain and showers often affecting the UK
  • The rain is likely to be heavy at times, and the showers, most frequently affecting western areas, will also be heavy and blustery in places, with isolated small hail and thunder
  • There will also be some brighter, drier spells in between rain and showers, although probably large amounts of cloud too, with limited sunshine
  • Unsettled, wet, and occasionally windy conditions are most likely during the first few days of this period; beyond this, and certainly into the following week, there is an increasing chance that cooler, northerly winds could develop, followed by a less unsettled spell
  • Temperatures mostly around average for the time of year

UK Week 3 and 4

  • Some unsettled weather is possible at this start of this period with showers or longer spells of rain in places
  • However, a change to more settled conditions is more likely through this period as high pressure becomes more influential
  • This more settled theme continues into early May, although some briefer spells of wetter, unsettled weather remain possible, especially in the south
  • Temperatures are expected to be above average overall

Weather data by Met Office

Brecon Beacons mountain weather forecast (Met Office)

Updated: Fri, 11-Apr at 04:49

Specialist mountain forecast: MWIS

Today
Fri, 11-Apr

Fine with lengthy spells of occasionally hazy sunshine. Mostly light winds.

A chilly start possible in the valleys, with some frost and mist or fog that will quickly lift after dawn. Another fine day is expected, becoming warm with lengthy sunny spells, but the sunshine perhaps rather hazy at times in the north under high cloud. Despite this, Moderate UV levels are expected. Winds mostly light. Turning chilly in valleys through the evening, with some mist forming by midnight.

Medium risk Strong Sunlight
Chance of Cloud free tops Near 100%.
Ground conditions Please see - https://yrwyddfa.live/
Visibility Briefly poor or very poor in some valleys early and late with mist and fog, else very good with no significant cloud.
Confidence High for fine and settled theme on Friday and for transition to unsettled weather over the weekend. However, low for rain and shower detail in the unsettled weather.
View Moderate UV levels mean that sun protection should be considered.

Conditions on the tops at 900m

Time Weather Rain Temp Wind Freezing
06:00 Sunny 00% 8 9 1600m
09:00 Sunny 00% 9 6 1600m
12:00 Sunny 00% 10 5 1600m
15:00 Sunny 00% 11 6 1600m
18:00 Sunny 00% 10 5 1700m
21:00 Clear night 00% 9 13 1700m
Sat, 12-Apr

A fine start with sunny spells, perhaps locally misty or foggy in some valleys but this soon clearing. Cloud thickening during the day. Rain or showers, heavy at times, arriving from the SW, most likely during the afternoon or evening but with uncertainty in timing.

Ice Above the summits.
Visibility Areas of cloud likely developing later, base 400-500m. Visibility generally very good, but poor in any mist or rain, and very poor in any early valley fog or low cloud later.
Wind Southeast becoming southwest 15-20 mph, gusting 25-30mph across summits.
Temp (tops) Plus 9 Celsius, becoming Plus 5 Celsius later. at 800m
Sun, 13-Apr

Confidence rather low for detail, but rain or showers likely, these perhaps heavy at times with a low risk of lightning. Strong westerly or southwesterly winds with a significant wind chill. Freezing level lowering to 800-1000m, with showers wintry on higher slopes later.

Mon, 14-Apr

Early low cloud lifting from summits, then probably a bright day with passing April showers, perhaps heavy and thundery. Freezing level rising just above summits, but early showers wintry on higher slopes. Strong southwesterly winds, perhaps near gale force on summits with a significant wind chill.

Tue, 15-Apr

A great deal of uncertainty by this time, but a continuing risk of rain or showers, perhaps interspersed with some drier spells. Freezing level above summits. Winds easing somewhat.

Weather data by Met Office

Brecon Beacons Air Quality (Pollen and UV)

Updated: Fri, 11-Apr at 17:37

Key : Low Medium High Very High

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Today air q UV alder birch   air q UV alder birch   air q UV alder birch   air q   alder birch   air q   alder birch   air q   alder birch   air q   alder birch  
Sat, 12 Apr air q   alder birch   air q   alder birch   air q   alder birch   air q   alder birch   air q   alder birch   air q   alder birch   air q   alder birch   air q UV alder birch grass air q UV alder birch grass air q UV alder birch grass air q UV alder birch grass air q UV alder birch grass air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch grass air q   alder birch grass air q   alder birch grass air q   alder birch grass air q   alder birch  
Sun, 13 Apr air q   alder birch grass air q   alder birch grass air q   alder birch   air q   alder birch   air q   alder birch   air q   alder birch   air q   alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV   birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q   alder birch   air q   alder birch   air q   alder birch   air q   alder birch  
Mon, 14 Apr air q   alder birch   air q   alder birch   air q   alder birch   air q   alder birch   air q   alder birch   air q     birch   air q     birch   air q UV   birch   air q UV   birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q UV alder birch   air q     birch   air q         air q     birch   air q     birch  

Pollens

These pollens are shown (in season):

  • Grass
  • Alder and birch (trees)
  • Mugwort and Ragweed (weeds)

When out walking, wraparound glasses, a disposable or washable facemask, and being at the front of the group, all help.

Other forecasts: Met Office, University of Worcester

UV and Air Quality

The UV forecast takes account of cloud cover.

"Air Q", the European Air Quality index, is a mix of dust/particulates, ozone, sulphur and nitrous oxides

Data

Weather data by Open-Meteo and CAMS ENSEMBLE

Brecon Beacons Visibility

Updated: Fri, 11-Apr at 17:37

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 31km 50km 50km 18km 10km
Sat, 12 Apr 50km 19km 50km 22km 27km 25km 21km 22km 50km 50km 50km 23km 4km 8km 5km 50km
Sun, 13 Apr 0km 1km 2km 2km 50km 50km 50km 9km 50km 50km 50km 50km 50km 2km 2km 2km
Mon, 14 Apr 0km 2km 2km 4km 12km 13km 26km 36km 53km 59km 57km 57km 53km 49km 36km 23km
Tue, 15 Apr 13km 13km 22km 32km 42km 49km 57km 64km 51km 37km 23km 22km 21km 20km 22km 25km

Visibility in km. Above 50km is 'good'. Humidity and air pollution make it worse. Theoretical maximum is 300km/200 miles in clean dry polar air.

On the South Downs, at ~ 170m/500ft, the horizon is is ~ 45km/30 miles away. On a mountain at 1,000m/3,000ft, it is ~ 160km/100 miles away. Formula: horizon in km = √ (13 x altitude in m)

Weather data by Open-Meteo

Brecon Beacons daylight

Date Light Dawn Sunrise Max Ht. Sunset Dusk Dark Day Length
Fri, 11-Apr 05:07 05:50 06:25 13:14 20:04 20:40 21:23 14:49
Sat, 12-Apr 05:04 05:48 06:23 13:14 20:06 20:42 21:25 14:53
Sun, 13-Apr 05:02 05:45 06:21 13:14 20:08 20:43 21:28 14:58
Mon, 14-Apr 04:59 05:43 06:19 13:13 20:09 20:45 21:30 15:02
Tue, 15-Apr 04:56 05:41 06:16 13:13 20:11 20:47 21:32 15:06
Wed, 16-Apr 04:54 05:38 06:14 13:13 20:13 20:49 21:34 15:10
Thu, 17-Apr 04:51 05:36 06:12 13:13 20:15 20:51 21:36 15:14
Fri, 18-Apr 04:48 05:34 06:10 13:13 20:16 20:53 21:38 15:18
Sat, 19-Apr 04:46 05:31 06:08 13:12 20:18 20:55 21:41 15:23
Sun, 20-Apr 04:43 05:29 06:06 13:12 20:20 20:56 21:43 15:27
Mon, 21-Apr 04:41 05:27 06:04 13:12 20:21 20:58 21:45 15:31
Tue, 22-Apr 04:38 05:25 06:02 13:12 20:23 21:00 21:47 15:35
Wed, 23-Apr 04:35 05:22 06:00 13:12 20:25 21:02 21:49 15:39
Thu, 24-Apr 04:33 05:20 05:57 13:11 20:26 21:04 21:52 15:43
Fri, 25-Apr 04:30 05:18 05:55 13:11 20:28 21:06 21:54 15:47
Sat, 26-Apr 04:28 05:16 05:53 13:11 20:30 21:08 21:56 15:51
Sun, 27-Apr 04:25 05:14 05:51 13:11 20:31 21:10 21:59 15:55
Mon, 28-Apr 04:22 05:11 05:49 13:11 20:33 21:11 22:01 16:00
Tue, 29-Apr 04:20 05:09 05:47 13:11 20:35 21:13 22:03 16:04
Wed, 30-Apr 04:17 05:07 05:46 13:10 20:37 21:15 22:05 16:08
Thu, 01-May 04:15 05:05 05:44 13:10 20:38 21:17 22:08 16:12
Fri, 02-May 04:12 05:03 05:42 13:10 20:40 21:19 22:10 16:16
Sat, 03-May 04:10 05:01 05:40 13:10 20:41 21:21 22:13 16:20
Sun, 04-May 04:07 04:59 05:38 13:10 20:43 21:23 22:15 16:24
Mon, 05-May 04:05 04:57 05:36 13:10 20:45 21:25 22:17 16:27
Tue, 06-May 04:02 04:55 05:34 13:10 20:46 21:26 22:20 16:31
Wed, 07-May 04:00 04:53 05:33 13:10 20:48 21:28 22:22 16:35
Thu, 08-May 03:57 04:51 05:31 13:10 20:50 21:30 22:24 16:39
Fri, 09-May 03:55 04:49 05:29 13:10 20:51 21:32 22:27 16:43
Sat, 10-May 03:52 04:47 05:28 13:10 20:53 21:34 22:29 16:47
Sun, 11-May 03:50 04:45 05:26 13:10 20:54 21:36 22:32 16:50
Mon, 12-May 03:47 04:43 05:24 13:10 20:56 21:38 22:34 16:54
Tue, 13-May 03:45 04:41 05:23 13:10 20:58 21:39 22:36 16:58
Wed, 14-May 03:42 04:39 05:21 13:10 20:59 21:41 22:39 17:01
Thu, 15-May 03:40 04:38 05:20 13:10 21:01 21:43 22:41 17:05
Fri, 16-May 03:38 04:36 05:18 13:10 21:02 21:45 22:44 17:08
Sat, 17-May 03:35 04:34 05:17 13:10 21:04 21:46 22:46 17:12
Sun, 18-May 03:33 04:33 05:15 13:10 21:05 21:48 22:48 17:15
Mon, 19-May 03:31 04:31 05:14 13:10 21:07 21:50 22:51 17:19
Tue, 20-May 03:28 04:29 05:13 13:10 21:08 21:52 22:53 17:22
Wed, 21-May 03:26 04:28 05:11 13:10 21:09 21:53 22:55 17:25
Thu, 22-May 03:24 04:26 05:10 13:10 21:11 21:55 22:58 17:28
Fri, 23-May 03:22 04:25 05:09 13:10 21:12 21:57 23:00 17:31
Sat, 24-May 03:20 04:23 05:08 13:10 21:14 21:58 23:02 17:34
Sun, 25-May 03:18 04:22 05:06 13:10 21:15 22:00 23:05 17:37
Mon, 26-May 03:16 04:21 05:05 13:10 21:16 22:01 23:07 17:40
Tue, 27-May 03:14 04:19 05:04 13:10 21:17 22:03 23:09 17:43
Wed, 28-May 03:12 04:18 05:03 13:11 21:19 22:04 23:11 17:46
Thu, 29-May 03:10 04:17 05:02 13:11 21:20 22:06 23:13 17:48
Fri, 30-May 03:08 04:16 05:01 13:11 21:21 22:07 23:15 17:51
Sat, 31-May 03:06 04:15 05:01 13:11 21:22 22:08 23:18 17:53
Sun, 01-Jun 03:04 04:13 05:00 13:11 21:23 22:10 23:20 17:56
Mon, 02-Jun 03:03 04:13 04:59 13:11 21:24 22:11 23:21 17:58
Tue, 03-Jun 03:01 04:12 04:58 13:12 21:25 22:12 23:23 18:00
Wed, 04-Jun 03:00 04:11 04:58 13:12 21:26 22:13 23:25 18:02
Thu, 05-Jun 02:58 04:10 04:57 13:12 21:27 22:15 23:27 18:04
Fri, 06-Jun 02:57 04:09 04:56 13:12 21:28 22:16 23:29 18:06
Sat, 07-Jun 02:55 04:08 04:56 13:12 21:29 22:17 23:30 18:08
Sun, 08-Jun 02:54 04:08 04:55 13:12 21:30 22:18 23:32 18:09
Mon, 09-Jun 02:53 04:07 04:55 13:13 21:31 22:19 23:33 18:11
Tue, 10-Jun 02:52 04:07 04:54 13:13 21:32 22:20 23:35 18:12
Wed, 11-Jun 02:51 04:06 04:54 13:13 21:32 22:20 23:36 18:14
Thu, 12-Jun 02:50 04:06 04:54 13:13 21:33 22:21 23:37 18:15
Fri, 13-Jun 02:50 04:05 04:54 13:13 21:33 22:22 23:38 18:16
Sat, 14-Jun 02:49 04:05 04:53 13:14 21:34 22:22 23:39 18:17
Sun, 15-Jun 02:48 04:05 04:53 13:14 21:35 22:23 23:40 18:18
Mon, 16-Jun 02:48 04:05 04:53 13:14 21:35 22:24 23:41 18:18
Tue, 17-Jun 02:48 04:05 04:53 13:14 21:35 22:24 23:41 18:19
Wed, 18-Jun 02:47 04:05 04:53 13:15 21:36 22:24 23:42 18:19
Thu, 19-Jun 02:47 04:05 04:53 13:15 21:36 22:25 23:42 18:19
Fri, 20-Jun 02:47 04:05 04:54 13:15 21:36 22:25 23:43 18:20
Sat, 21-Jun 02:48 04:05 04:54 13:15 21:37 22:25 23:43 18:20
Sun, 22-Jun 02:48 04:05 04:54 13:15 21:37 22:25 23:43 18:19
Mon, 23-Jun 02:48 04:06 04:54 13:16 21:37 22:25 23:43 18:19
Tue, 24-Jun 02:49 04:06 04:55 13:16 21:37 22:25 23:43 18:19
Wed, 25-Jun 02:49 04:07 04:55 13:16 21:37 22:25 23:42 18:18
Thu, 26-Jun 02:50 04:07 04:55 13:16 21:37 22:25 23:42 18:18
Fri, 27-Jun 02:51 04:08 04:56 13:16 21:37 22:25 23:41 18:17
Sat, 28-Jun 02:52 04:08 04:57 13:17 21:36 22:25 23:41 18:16
Sun, 29-Jun 02:53 04:09 04:57 13:17 21:36 22:24 23:40 18:15
Mon, 30-Jun 02:54 04:10 04:58 13:17 21:36 22:24 23:39 18:14
Tue, 01-Jul 02:55 04:10 04:58 13:17 21:36 22:24 23:38 18:13
Wed, 02-Jul 02:57 04:11 04:59 13:17 21:35 22:23 23:37 18:11
Thu, 03-Jul 02:58 04:12 05:00 13:18 21:35 22:22 23:36 18:10
Fri, 04-Jul 03:00 04:13 05:01 13:18 21:34 22:22 23:35 18:08
Sat, 05-Jul 03:01 04:14 05:02 13:18 21:34 22:21 23:34 18:06
Sun, 06-Jul 03:03 04:15 05:02 13:18 21:33 22:20 23:32 18:05
Mon, 07-Jul 03:04 04:16 05:03 13:18 21:33 22:20 23:31 18:03
Tue, 08-Jul 03:06 04:17 05:04 13:18 21:32 22:19 23:29 18:01
Wed, 09-Jul 03:08 04:19 05:05 13:19 21:31 22:18 23:28 17:59
Thu, 10-Jul 03:10 04:20 05:06 13:19 21:30 22:17 23:26 17:56
Fri, 11-Jul 03:12 04:21 05:07 13:19 21:30 22:16 23:24 17:54
Sat, 12-Jul 03:14 04:23 05:09 13:19 21:29 22:15 23:22 17:52
Sun, 13-Jul 03:16 04:24 05:10 13:19 21:28 22:13 23:21 17:49
Mon, 14-Jul 03:18 04:25 05:11 13:19 21:27 22:12 23:19 17:46
Tue, 15-Jul 03:20 04:27 05:12 13:19 21:26 22:11 23:17 17:44
Wed, 16-Jul 03:22 04:28 05:13 13:19 21:25 22:10 23:15 17:41
Thu, 17-Jul 03:25 04:30 05:15 13:20 21:24 22:08 23:13 17:38
Fri, 18-Jul 03:27 04:31 05:16 13:20 21:23 22:07 23:11 17:35
Sat, 19-Jul 03:29 04:33 05:17 13:20 21:21 22:05 23:09 17:32
Sun, 20-Jul 03:31 04:34 05:18 13:20 21:20 22:04 23:06 17:29
Mon, 21-Jul 03:34 04:36 05:20 13:20 21:19 22:02 23:04 17:26
Tue, 22-Jul 03:36 04:38 05:21 13:20 21:18 22:01 23:02 17:23
Wed, 23-Jul 03:38 04:39 05:23 13:20 21:16 21:59 23:00 17:20
Thu, 24-Jul 03:40 04:41 05:24 13:20 21:15 21:58 22:57 17:16
Fri, 25-Jul 03:43 04:43 05:25 13:20 21:13 21:56 22:55 17:13
Sat, 26-Jul 03:45 04:44 05:27 13:20 21:12 21:54 22:53 17:10
Sun, 27-Jul 03:47 04:46 05:28 13:20 21:10 21:52 22:50 17:06
Mon, 28-Jul 03:50 04:48 05:30 13:20 21:09 21:51 22:48 17:03
Tue, 29-Jul 03:52 04:49 05:31 13:20 21:07 21:49 22:46 16:59
Wed, 30-Jul 03:54 04:51 05:33 13:20 21:06 21:47 22:43 16:55
Thu, 31-Jul 03:57 04:53 05:34 13:20 21:04 21:45 22:41 16:52
Fri, 01-Aug 03:59 04:55 05:36 13:20 21:02 21:43 22:38 16:48
Sat, 02-Aug 04:01 04:56 05:37 13:20 21:01 21:41 22:36 16:44
Sun, 03-Aug 04:04 04:58 05:39 13:19 20:59 21:39 22:33 16:41
Mon, 04-Aug 04:06 05:00 05:40 13:19 20:57 21:37 22:31 16:37
Tue, 05-Aug 04:08 05:02 05:42 13:19 20:55 21:35 22:28 16:33
Wed, 06-Aug 04:11 05:04 05:44 13:19 20:54 21:33 22:26 16:29
Thu, 07-Aug 04:13 05:05 05:45 13:19 20:52 21:31 22:23 16:25
Fri, 08-Aug 04:15 05:07 05:47 13:19 20:50 21:29 22:21 16:21
Sat, 09-Aug 04:18 05:09 05:48 13:19 20:48 21:27 22:18 16:18
Sun, 10-Aug 04:20 05:11 05:50 13:19 20:46 21:25 22:15 16:14
Mon, 11-Aug 04:22 05:13 05:52 13:18 20:44 21:23 22:13 16:10
Tue, 12-Aug 04:24 05:15 05:53 13:18 20:42 21:21 22:10 16:06
Wed, 13-Aug 04:27 05:16 05:55 13:18 20:40 21:19 22:08 16:02
Thu, 14-Aug 04:29 05:18 05:56 13:18 20:38 21:16 22:05 15:58
Fri, 15-Aug 04:31 05:20 05:58 13:18 20:36 21:14 22:03 15:54
Sat, 16-Aug 04:33 05:22 06:00 13:18 20:34 21:12 22:00 15:50
Sun, 17-Aug 04:36 05:24 06:01 13:17 20:32 21:10 21:57 15:46
Mon, 18-Aug 04:38 05:25 06:03 13:17 20:30 21:07 21:55 15:42
Tue, 19-Aug 04:40 05:27 06:04 13:17 20:28 21:05 21:52 15:37
Wed, 20-Aug 04:42 05:29 06:06 13:17 20:26 21:03 21:49 15:33
Thu, 21-Aug 04:44 05:31 06:08 13:16 20:24 21:01 21:47 15:29
Fri, 22-Aug 04:46 05:33 06:09 13:16 20:22 20:58 21:44 15:25
Sat, 23-Aug 04:49 05:34 06:11 13:16 20:20 20:56 21:42 15:21
Sun, 24-Aug 04:51 05:36 06:13 13:16 20:18 20:54 21:39 15:17
Mon, 25-Aug 04:53 05:38 06:14 13:15 20:15 20:51 21:36 15:13
Tue, 26-Aug 04:55 05:40 06:16 13:15 20:13 20:49 21:34 15:09
Wed, 27-Aug 04:57 05:41 06:17 13:15 20:11 20:47 21:31 15:05
Thu, 28-Aug 04:59 05:43 06:19 13:14 20:09 20:44 21:28 15:01
Fri, 29-Aug 05:01 05:45 06:21 13:14 20:07 20:42 21:26 14:56
Sat, 30-Aug 05:03 05:47 06:22 13:14 20:04 20:40 21:23 14:52
Sun, 31-Aug 05:05 05:49 06:24 13:14 20:02 20:37 21:21 14:48
Mon, 01-Sep 05:07 05:50 06:26 13:13 20:00 20:35 21:18 14:44
Tue, 02-Sep 05:09 05:52 06:27 13:13 19:58 20:33 21:15 14:40
Wed, 03-Sep 05:11 05:54 06:29 13:13 19:55 20:30 21:13 14:36
Thu, 04-Sep 05:13 05:55 06:30 13:12 19:53 20:28 21:10 14:32
Fri, 05-Sep 05:15 05:57 06:32 13:12 19:51 20:25 21:08 14:28
Sat, 06-Sep 05:17 05:59 06:34 13:12 19:48 20:23 21:05 14:24
Sun, 07-Sep 05:19 06:01 06:35 13:11 19:46 20:21 21:02 14:19
Mon, 08-Sep 05:21 06:02 06:37 13:11 19:44 20:18 21:00 14:15
Tue, 09-Sep 05:22 06:04 06:38 13:11 19:42 20:16 20:57 14:11
Wed, 10-Sep 05:24 06:06 06:40 13:10 19:39 20:13 20:55 14:07
Thu, 11-Sep 05:26 06:07 06:42 13:10 19:37 20:11 20:52 14:03
Fri, 12-Sep 05:28 06:09 06:43 13:09 19:35 20:09 20:50 13:59
Sat, 13-Sep 05:30 06:11 06:45 13:09 19:32 20:06 20:47 13:55
Sun, 14-Sep 05:32 06:13 06:47 13:09 19:30 20:04 20:44 13:51
Mon, 15-Sep 05:34 06:14 06:48 13:08 19:28 20:01 20:42 13:47
Tue, 16-Sep 05:35 06:16 06:50 13:08 19:25 19:59 20:39 13:43
Wed, 17-Sep 05:37 06:18 06:51 13:08 19:23 19:57 20:37 13:39
Thu, 18-Sep 05:39 06:19 06:53 13:07 19:21 19:54 20:34 13:35
Fri, 19-Sep 05:41 06:21 06:55 13:07 19:18 19:52 20:32 13:30
Sat, 20-Sep 05:43 06:23 06:56 13:07 19:16 19:50 20:29 13:26
Sun, 21-Sep 05:44 06:24 06:58 13:06 19:14 19:47 20:27 13:22
Mon, 22-Sep 05:46 06:26 07:00 13:06 19:11 19:45 20:24 13:18
Tue, 23-Sep 05:48 06:28 07:01 13:06 19:09 19:42 20:22 13:14
Wed, 24-Sep 05:50 06:29 07:03 13:05 19:07 19:40 20:20 13:10
Thu, 25-Sep 05:51 06:31 07:04 13:05 19:04 19:38 20:17 13:06
Fri, 26-Sep 05:53 06:33 07:06 13:05 19:02 19:35 20:15 13:02
Sat, 27-Sep 05:55 06:34 07:08 13:04 19:00 19:33 20:12 12:58
Sun, 28-Sep 05:57 06:36 07:09 13:04 18:57 19:31 20:10 12:54
Mon, 29-Sep 05:58 06:38 07:11 13:04 18:55 19:28 20:08 12:50
Tue, 30-Sep 06:00 06:39 07:13 13:03 18:53 19:26 20:05 12:46
Wed, 01-Oct 06:02 06:41 07:14 13:03 18:50 19:24 20:03 12:42
Thu, 02-Oct 06:03 06:43 07:16 13:03 18:48 19:22 20:01 12:39
Fri, 03-Oct 06:05 06:44 07:18 13:02 18:46 19:19 19:58 12:35
Sat, 04-Oct 06:07 06:46 07:19 13:02 18:43 19:17 19:56 12:31
Sun, 05-Oct 06:08 06:47 07:21 13:02 18:41 19:15 19:54 12:27
Mon, 06-Oct 06:10 06:49 07:23 13:01 18:39 19:12 19:51 12:23
Tue, 07-Oct 06:12 06:51 07:24 13:01 18:37 19:10 19:49 12:19

Notes

  • Max Height (solar noon) is when the sun is highest in the sky.
  • Day length is dawn to dusk as there is enough light for walking for at least 30 minutes before sunrise and after sunset, even on an overcast day.
  • At 'Light' (nautical dawn) the horizon becomes visible. At 'Dawn' (civil dawn) there is enough light to read, and drivers can switch their lights off. Finally the sun rises.
  • After sunset, there is still enough light to read until 'Dusk' (civil dusk) or lighting up time for drivers. The horizon is still visible until 'Dark' (nautical dusk).
  • Times will vary if there is a hill on the horizon.

Brecon Beacons moonlight

Moonlight chart for walking at night.

Night of Sunset Dusk Moon Visible Dawn Sunrise Phase % Full Max. Ht. Night Walk
Fri, 11-Apr 20:04 20:40 dusk dawn 05:48 06:23 99 % 00:30 all night
Sat, 12-Apr 20:06 20:42 dusk dawn 05:45 06:21 100 % 01:10 all night
Sun, 13-Apr 20:08 20:43 21:06 dawn 05:43 06:19 99 % 01:51 before dawn
Mon, 14-Apr 20:09 20:45 22:20 dawn 05:41 06:16 97 % 02:35 before dawn
Tue, 15-Apr 20:11 20:47 23:35 dawn 05:38 06:14 92 % 03:22 before dawn
Wed, 16-Apr 20:13 20:49 00:47 dawn 05:36 06:12 87 % 04:11 before dawn
Thu, 17-Apr 20:15 20:51 01:53 dawn 05:34 06:10 79 % 05:04 before dawn
Fri, 18-Apr 20:16 20:53 02:46 dawn 05:31 06:08 71 % 05:57
Sat, 19-Apr 20:18 20:55 03:26 dawn 05:29 06:06 61 % 06:51
Sun, 20-Apr 20:20 20:56 03:55 dawn 05:27 06:04 51 % 07:44
Mon, 21-Apr 20:21 20:58 04:16 dawn 05:25 06:02 41 % 08:36
Tue, 22-Apr 20:23 21:00 04:31 dawn 05:22 06:00 30 % 09:26
Wed, 23-Apr 20:25 21:02 04:44 dawn 05:20 05:57 20 % 10:15
Thu, 24-Apr 20:26 21:04 04:56 dawn 05:18 05:55 12 % 11:04
Fri, 25-Apr 20:28 21:06 05:09 dawn 05:16 05:53 5 % 11:55
Sat, 26-Apr 20:30 21:08 05:14 05:51 1 %
Sun, 27-Apr 20:31 21:10 05:11 05:49 0 % 12:49
Mon, 28-Apr 20:33 21:11 dusk 22:17 05:09 05:47 2 % 13:47
Tue, 29-Apr 20:35 21:13 dusk 23:51 05:07 05:46 7 % 14:49
Wed, 30-Apr 20:37 21:15 dusk 01:11 05:05 05:44 14 % 15:53
Thu, 01-May 20:38 21:17 dusk 02:09 05:03 05:42 23 % 16:57
Fri, 02-May 20:40 21:19 dusk 02:48 05:01 05:40 33 % 17:58
Sat, 03-May 20:41 21:21 dusk 03:13 04:59 05:38 44 % 18:53
Sun, 04-May 20:43 21:23 dusk 03:31 04:57 05:36 54 % 19:43
Mon, 05-May 20:45 21:25 dusk 03:44 04:55 05:34 64 % 20:29
Tue, 06-May 20:46 21:26 dusk 03:54 04:53 05:33 73 % 21:11
Wed, 07-May 20:48 21:28 dusk 04:03 04:51 05:31 81 % 21:51 after dusk
Thu, 08-May 20:50 21:30 dusk 04:12 04:49 05:29 88 % 22:30 after dusk
Fri, 09-May 20:51 21:32 dusk 04:22 04:47 05:28 93 % 23:09 after dusk
Sat, 10-May 20:53 21:34 dusk 04:33 04:45 05:26 97 % 23:50 after dusk
Sun, 11-May 20:54 21:36 dusk dawn 04:43 05:24 99 % 00:33 all night
Mon, 12-May 20:56 21:38 dusk dawn 04:41 05:23 100 % 01:19 all night
Tue, 13-May 20:58 21:39 22:37 dawn 04:39 05:21 98 % 02:08 before dawn
Wed, 14-May 20:59 21:41 23:45 dawn 04:38 05:20 95 % 03:00 before dawn
Thu, 15-May 21:01 21:43 00:42 dawn 04:36 05:18 90 % 03:53 before dawn
Fri, 16-May 21:02 21:45 01:26 dawn 04:34 05:17 84 % 04:47 before dawn
Sat, 17-May 21:04 21:46 01:58 dawn 04:33 05:15 76 % 05:40 before dawn
Sun, 18-May 21:05 21:48 02:20 dawn 04:31 05:14 66 % 06:30
Mon, 19-May 21:07 21:50 02:37 dawn 04:29 05:13 56 % 07:19
Tue, 20-May 21:08 21:52 02:50 dawn 04:28 05:11 45 % 08:07
Wed, 21-May 21:09 21:53 03:02 dawn 04:26 05:10 34 % 08:54
Thu, 22-May 21:11 21:55 03:14 dawn 04:25 05:09 24 % 09:42
Fri, 23-May 21:12 21:57 03:27 dawn 04:23 05:08 14 % 10:33
Sat, 24-May 21:14 21:58 03:43 dawn 04:22 05:06 7 % 11:28
Sun, 25-May 21:15 22:00 04:21 05:05 2 %
Mon, 26-May 21:16 22:01 04:19 05:04 0 % 12:27
Tue, 27-May 21:17 22:03 dusk 22:43 04:18 05:03 1 % 13:31
Wed, 28-May 21:19 22:04 dusk 23:54 04:17 05:02 5 % 14:37
Thu, 29-May 21:20 22:06 dusk 00:42 04:16 05:01 11 % 15:41
Fri, 30-May 21:21 22:07 dusk 01:14 04:15 05:01 19 % 16:41
Sat, 31-May 21:22 22:08 dusk 01:35 04:13 05:00 28 % 17:35
Sun, 01-Jun 21:23 22:10 dusk 01:50 04:13 04:59 38 % 18:24
Mon, 02-Jun 21:24 22:11 dusk 02:02 04:12 04:58 48 % 19:08
Tue, 03-Jun 21:25 22:12 dusk 02:11 04:11 04:58 58 % 19:49
Wed, 04-Jun 21:26 22:13 dusk 02:21 04:10 04:57 67 % 20:29
Thu, 05-Jun 21:27 22:15 dusk 02:30 04:09 04:56 76 % 21:08 after dusk
Fri, 06-Jun 21:28 22:16 dusk 02:41 04:08 04:56 83 % 21:48 after dusk
Sat, 07-Jun 21:29 22:17 dusk 02:54 04:08 04:55 90 % 22:30 after dusk
Sun, 08-Jun 21:30 22:18 dusk 03:12 04:07 04:55 95 % 23:15 after dusk
Mon, 09-Jun 21:31 22:19 dusk 03:36 04:07 04:54 98 % 00:04 after dusk
Tue, 10-Jun 21:32 22:20 dusk dawn 04:06 04:54 100 % 00:55 all night
Wed, 11-Jun 21:32 22:20 22:37 dawn 04:06 04:54 99 % 01:48 before dawn
Thu, 12-Jun 21:33 22:21 23:25 dawn 04:05 04:54 97 % 02:43 before dawn
Fri, 13-Jun 21:33 22:22 00:00 dawn 04:05 04:53 93 % 03:36 before dawn
Sat, 14-Jun 21:34 22:22 00:25 dawn 04:05 04:53 87 % 04:28 before dawn
Sun, 15-Jun 21:35 22:23 00:43 dawn 04:05 04:53 79 % 05:17 before dawn
Mon, 16-Jun 21:35 22:24 00:57 dawn 04:05 04:53 70 % 06:04
Tue, 17-Jun 21:35 22:24 01:09 dawn 04:05 04:53 60 % 06:50
Wed, 18-Jun 21:36 22:24 01:21 dawn 04:05 04:53 48 % 07:37
Thu, 19-Jun 21:36 22:25 01:32 dawn 04:05 04:54 37 % 08:25
Fri, 20-Jun 21:36 22:25 01:46 dawn 04:05 04:54 26 % 09:16
Sat, 21-Jun 21:37 22:25 02:04 dawn 04:05 04:54 17 % 10:12
Sun, 22-Jun 21:37 22:25 02:30 dawn 04:06 04:54 9 % 11:12
Mon, 23-Jun 21:37 22:25 04:06 04:55 3 %
Tue, 24-Jun 21:37 22:25 04:04 dawn 04:07 04:55 1 % 12:16
Wed, 25-Jun 21:37 22:25 dusk 22:32 04:07 04:55 1 % 13:21
Thu, 26-Jun 21:37 22:25 dusk 23:11 04:08 04:56 3 % 14:24
Fri, 27-Jun 21:37 22:25 dusk 23:37 04:08 04:57 8 % 15:22
Sat, 28-Jun 21:36 22:25 dusk 23:54 04:09 04:57 15 % 16:14
Sun, 29-Jun 21:36 22:24 dusk 00:07 04:10 04:58 23 % 17:01
Mon, 30-Jun 21:36 22:24 dusk 00:18 04:10 04:58 32 % 17:44
Tue, 01-Jul 21:36 22:24 dusk 00:28 04:11 04:59 42 % 18:25
Wed, 02-Jul 21:35 22:23 dusk 00:37 04:12 05:00 52 % 19:05
Thu, 03-Jul 21:35 22:22 dusk 00:47 04:13 05:01 61 % 19:45
Fri, 04-Jul 21:34 22:22 dusk 01:00 04:14 05:02 70 % 20:27
Sat, 05-Jul 21:34 22:21 dusk 01:15 04:15 05:02 78 % 21:10 after dusk
Sun, 06-Jul 21:33 22:20 dusk 01:37 04:16 05:03 85 % 21:57 after dusk
Mon, 07-Jul 21:33 22:20 dusk 02:08 04:17 05:04 92 % 22:48 after dusk
Tue, 08-Jul 21:32 22:19 dusk 02:52 04:19 05:05 96 % 23:41 after dusk
Wed, 09-Jul 21:31 22:18 dusk 03:52 04:20 05:06 99 % 00:35 after dusk
Thu, 10-Jul 21:30 22:17 dusk dawn 04:21 05:07 100 % 01:30 all night
Fri, 11-Jul 21:30 22:16 22:29 dawn 04:23 05:09 99 % 02:23 before dawn
Sat, 12-Jul 21:29 22:15 22:49 dawn 04:24 05:10 95 % 03:14 before dawn
Sun, 13-Jul 21:28 22:13 23:05 dawn 04:25 05:11 90 % 04:02 before dawn
Mon, 14-Jul 21:27 22:12 23:17 dawn 04:27 05:12 82 % 04:49 before dawn
Tue, 15-Jul 21:26 22:11 23:29 dawn 04:28 05:13 73 % 05:35
Wed, 16-Jul 21:25 22:10 23:40 dawn 04:30 05:15 62 % 06:22
Thu, 17-Jul 21:24 22:08 23:53 dawn 04:31 05:16 51 % 07:11
Fri, 18-Jul 21:23 22:07 00:09 dawn 04:33 05:17 39 % 08:04
Sat, 19-Jul 21:21 22:05 00:30 dawn 04:34 05:18 29 % 09:01
Sun, 20-Jul 21:20 22:04 01:02 dawn 04:36 05:20 19 % 10:02
Mon, 21-Jul 21:19 22:02 01:49 dawn 04:38 05:21 11 % 11:05
Tue, 22-Jul 21:18 22:01 04:39 05:23 5 %
Wed, 23-Jul 21:16 21:59 04:17 dawn 04:41 05:24 1 % 12:08
Thu, 24-Jul 21:15 21:58 04:43 05:25 0 % 13:07
Fri, 25-Jul 21:13 21:56 dusk 21:58 04:44 05:27 2 % 14:02
Sat, 26-Jul 21:12 21:54 dusk 22:13 04:46 05:28 5 % 14:52
Sun, 27-Jul 21:10 21:52 dusk 22:25 04:48 05:30 11 % 15:37
Mon, 28-Jul 21:09 21:51 dusk 22:35 04:49 05:31 18 % 16:19
Tue, 29-Jul 21:07 21:49 dusk 22:44 04:51 05:33 26 % 17:00
Wed, 30-Jul 21:06 21:47 dusk 22:54 04:53 05:34 35 % 17:40
Thu, 31-Jul 21:04 21:45 dusk 23:05 04:55 05:36 45 % 18:22
Fri, 01-Aug 21:02 21:43 dusk 23:19 04:56 05:37 54 % 19:05
Sat, 02-Aug 21:01 21:41 dusk 23:38 04:58 05:39 64 % 19:50
Sun, 03-Aug 20:59 21:39 dusk 00:05 05:00 05:40 72 % 20:39
Mon, 04-Aug 20:57 21:37 dusk 00:43 05:02 05:42 81 % 21:31 after dusk
Tue, 05-Aug 20:55 21:35 dusk 01:37 05:04 05:44 88 % 22:25 after dusk
Wed, 06-Aug 20:54 21:33 dusk 02:45 05:05 05:45 94 % 23:20 after dusk
Thu, 07-Aug 20:52 21:31 dusk 04:05 05:07 05:47 98 % 00:14 after dusk
Fri, 08-Aug 20:50 21:29 dusk dawn 05:09 05:48 100 % 01:06 all night
Sat, 09-Aug 20:48 21:27 dusk dawn 05:11 05:50 99 % 01:56 all night
Sun, 10-Aug 20:46 21:25 dusk dawn 05:13 05:52 97 % 02:45 all night
Mon, 11-Aug 20:44 21:23 21:37 dawn 05:15 05:53 92 % 03:32 before dawn
Tue, 12-Aug 20:42 21:21 21:48 dawn 05:16 05:55 84 % 04:19 before dawn
Wed, 13-Aug 20:40 21:19 22:00 dawn 05:18 05:56 75 % 05:08 before dawn
Thu, 14-Aug 20:38 21:16 22:15 dawn 05:20 05:58 64 % 06:00
Fri, 15-Aug 20:36 21:14 22:34 dawn 05:22 06:00 53 % 06:55
Sat, 16-Aug 20:34 21:12 23:02 dawn 05:24 06:01 42 % 07:54
Sun, 17-Aug 20:32 21:10 23:43 dawn 05:25 06:03 31 % 08:56
Mon, 18-Aug 20:30 21:07 00:41 dawn 05:27 06:04 21 % 09:58
Tue, 19-Aug 20:28 21:05 01:57 dawn 05:29 06:06 12 % 10:57
Wed, 20-Aug 20:26 21:03 03:21 dawn 05:31 06:08 6 % 11:53
Thu, 21-Aug 20:24 21:01 05:33 06:09 2 %
Fri, 22-Aug 20:22 20:58 05:34 06:11 0 % 12:43
Sat, 23-Aug 20:20 20:56 05:36 06:13 1 % 13:30
Sun, 24-Aug 20:18 20:54 05:38 06:14 3 % 14:13
Mon, 25-Aug 20:15 20:51 dusk 20:52 05:40 06:16 7 % 14:55
Tue, 26-Aug 20:13 20:49 dusk 21:01 05:41 06:17 13 % 15:36
Wed, 27-Aug 20:11 20:47 dusk 21:12 05:43 06:19 21 % 16:17
Thu, 28-Aug 20:09 20:44 dusk 21:25 05:45 06:21 29 % 16:59
Fri, 29-Aug 20:07 20:42 dusk 21:41 05:47 06:22 38 % 17:43
Sat, 30-Aug 20:04 20:40 dusk 22:04 05:49 06:24 47 % 18:31
Sun, 31-Aug 20:02 20:37 dusk 22:36 05:50 06:26 57 % 19:21
Mon, 01-Sep 20:00 20:35 dusk 23:23 05:52 06:27 66 % 20:13
Tue, 02-Sep 19:58 20:33 dusk 00:24 05:54 06:29 75 % 21:07 after dusk
Wed, 03-Sep 19:55 20:30 dusk 01:39 05:55 06:30 83 % 22:01 after dusk
Thu, 04-Sep 19:53 20:28 dusk 03:02 05:57 06:32 91 % 22:54 after dusk
Fri, 05-Sep 19:51 20:25 dusk 04:28 05:59 06:34 96 % 23:46 after dusk
Sat, 06-Sep 19:48 20:23 dusk 05:55 06:01 06:35 99 % 00:35 after dusk
Sun, 07-Sep 19:46 20:21 dusk dawn 06:02 06:37 100 % 01:24 all night
Mon, 08-Sep 19:44 20:18 dusk dawn 06:04 06:38 98 % 02:12 all night
Tue, 09-Sep 19:42 20:16 dusk dawn 06:06 06:40 93 % 03:02 all night
Wed, 10-Sep 19:39 20:13 20:21 dawn 06:07 06:42 86 % 03:54 before dawn
Thu, 11-Sep 19:37 20:11 20:39 dawn 06:09 06:43 77 % 04:50 before dawn
Fri, 12-Sep 19:35 20:09 21:04 dawn 06:11 06:45 67 % 05:49
Sat, 13-Sep 19:32 20:06 21:41 dawn 06:13 06:47 56 % 06:50
Sun, 14-Sep 19:30 20:04 22:34 dawn 06:14 06:48 44 % 07:52
Mon, 15-Sep 19:28 20:01 23:44 dawn 06:16 06:50 33 % 08:52
Tue, 16-Sep 19:25 19:59 01:05 dawn 06:18 06:51 24 % 09:48
Wed, 17-Sep 19:23 19:57 02:30 dawn 06:19 06:53 15 % 10:39
Thu, 18-Sep 19:21 19:54 03:52 dawn 06:21 06:55 8 % 11:26
Fri, 19-Sep 19:18 19:52 06:23 06:56 4 %
Sat, 20-Sep 19:16 19:50 06:24 06:58 1 % 12:10
Sun, 21-Sep 19:14 19:47 06:26 07:00 0 % 12:51
Mon, 22-Sep 19:11 19:45 06:28 07:01 1 % 13:32
Tue, 23-Sep 19:09 19:42 06:29 07:03 4 % 14:13
Wed, 24-Sep 19:07 19:40 06:31 07:04 9 % 14:54
Thu, 25-Sep 19:04 19:38 dusk 19:47 06:33 07:06 15 % 15:38
Fri, 26-Sep 19:02 19:35 dusk 20:07 06:34 07:08 23 % 16:24
Sat, 27-Sep 19:00 19:33 dusk 20:35 06:36 07:09 31 % 17:13
Sun, 28-Sep 18:57 19:31 dusk 21:14 06:38 07:11 40 % 18:04
Mon, 29-Sep 18:55 19:28 dusk 22:09 06:39 07:13 50 % 18:57
Tue, 30-Sep 18:53 19:26 dusk 23:17 06:41 07:14 60 % 19:50
Wed, 01-Oct 18:50 19:24 dusk 00:35 06:43 07:16 69 % 20:42
Thu, 02-Oct 18:48 19:22 dusk 01:58 06:44 07:18 79 % 21:33 after dusk
Fri, 03-Oct 18:46 19:19 dusk 03:23 06:46 07:19 87 % 22:23 after dusk
Sat, 04-Oct 18:43 19:17 dusk 04:50 06:47 07:21 93 % 23:11 after dusk
Sun, 05-Oct 18:41 19:15 dusk 06:17 06:49 07:23 98 % 00:00 after dusk
Mon, 06-Oct 18:39 19:12 dusk dawn 06:51 07:24 100 % 00:49 all night
Tue, 07-Oct 18:37 19:10 dusk dawn 06:52 07:26 99 % 01:42 all night

Notes

  • The percentage of the moon which is illuminated doesn't vary much with location.
  • A full moon is not just bigger, it is much brighter. A quarter moon (1/2 disk visible) give less than 5% of the illumination of a full moon. You can walk with a quarter moon if its high in the sky (after dusk for a growing moon, before dawn for a shrinking moon).
  • Sky glow (light reflected by air or clouds) from nearby cities, and especially snow on the ground also effect light levels.
  • Times will vary a few minutes, as (i) these figures are for the centre of the county the walk is in, (ii) if there are hills on the horizon, and (iii) if you are on a hill
  • Sunlight is ~ 1,000,000 times brighter than moonlight.
  • Of course, you need a cloudless night as well!

Brecon Beacons weather (Accuweather)

Now would be a good time for a cup of tea.