The Black Mountain (Y Mynydd Du) from Glyntawe Walk

A spectacular ridge walk to Fan Brycheiniog, Fan Foel and Waun Lefrith. Return via a glacial valley below the ridge, or remote moorland, shakeholes and a waterfall

Hiking weather forecast

Brecon Beacons hourly weather (Visual Crossing)

Sunset: 16:41. Dusk: 17:19. Dark: 18:00. Moon 58% (00:25 to dawn)

Updated: Tue, 21-Jan at 02:39

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 3% 7% 7% 7% 7% 7% 7% 0% 0% 0% 0% 0% 0% 3% 3% 3%
Wed, 22 Jan 10% 7% 7% 7% 7% 7% 7% 0% 0% 0% 0% 0% 0% 0% 0% 0%
Thu, 23 Jan 7% 94% 94% 94% 94% 94% 94% 39% 39% 39% 39% 39% 39% 45% 45% 45%
Fri, 24 Jan 100% 77% 77% 77% 77% 77% 77% 45% 45% 45% 45% 45% 45% 39% 39% 39%
Sat, 25 Jan 42% 52% 52% 52% 52% 52% 52% 55% 55% 55% 55% 55% 55% 42% 42% 42%
Sun, 26 Jan 🌫 36% 29% 29% 29% 29% 29% 29% 48% 48% 48% 48% 48% 48% 55% 55% 55%
Mon, 27 Jan 52% 61% 61% 61% 61% 61% 61% 74% 74% 74% 74% 74% 74% 61% 61% 61%
Tue, 28 Jan 48% 45% 45% 45% 45% 45% 45% 71% 71% 71% 71% 71% 71% 68% 68% 68%
Wed, 29 Jan 58% 39% 39% 39% 39% 39% 39% 65% 65% 65% 65% 65% 65% 45% 45% 45%
Thu, 30 Jan 55% 52% 52% 52% 52% 52% 52% 45% 45% 45% 45% 45% 45% 🌫 36% 🌫 36% 🌫 36%
Fri, 31 Jan 23% 32% 32% 32% 32% 32% 32% 26% 26% 26% 26% 26% 🌫 26% 23% 23% 23%
Sat, 01 Feb 23% 16% 16% 16% 16% 16% 16% 32% 32% 32% 32% 32% 32% 36% 36% 36%
Sun, 02 Feb 19% 16% 16% 16% 16% 16% 16% 29% 29% 29% 29% 29% 29% 45% 45% 45%
Mon, 03 Feb 36% 29% 29% 29% 29% 29% 29% 36% 36% 36% 36% 36% 36% 42% 42% 42%
Tue, 04 Feb 🌫 23% 🌫 16% 🌫 16% 🌫 16% 16% 16% 16% 29% 29% 29% 29% 29% 29% 26% 26% 26%

Percentages are the chance of rain.

Weather data by Visual Crossing

Brecon Beacons hourly weather (Open Meteo)

Sunset: 16:41. Dusk: 17:19. Dark: 18:00. Moon 58% (00:25 to dawn)

Updated: Mon, 20-Jan at 08:37

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 0% 0% 1% 1% 🌫 2% 🌫 2% 🌫 3% 🌫 4% 8% 🌫 12% 16% 🌫 18% 18% 18%
Tue, 21 Jan 🌫 22% 🌫 21% 🌫 18% 🌫 16% 🌫 15% 🌫 15% 🌫 14% 🌫 12% 9% 6% 🌫 4% 🌫 3% 🌫 2% 🌫 3% 🌫 4% 🌫 6%
Wed, 22 Jan 10% 9% 8% 🌫 8% 🌫 7% 🌫 6% 🌫 6% 🌫 9% 🌫 13% 16% 16% 14% 12% 12% 12% 12%
Thu, 23 Jan 8% 13% 21% 31% 44% 60% 73% 82% 89% 94% 96% 96% 92% 80% 64% 51%
Fri, 24 Jan 92% 95% 94% 92% 88% 83% 78% 73% 68% 65% 64% 64% 63% 58% 53% 49%
Sat, 25 Jan 55% 57% 59% 59% 56% 52% 49% 48% 48% 47% 44% 41% 39% 42% 46% 49%
Sun, 26 Jan 43% 43% 42% 42% 42% 41% 41% 41% 42% 43% 44% 45% 47% 50% 53% 56%
Mon, 27 Jan 69% 70% 71% 72% 73% 74% 75% 76% 77% 78% 78% 79% 78% 76% 74% 71%
Tue, 28 Jan 61% 60% 58% 56% 54% 53% 53% 55% 57% 60% 63% 65% 67% 67% 65% 63%
Wed, 29 Jan 49% 50% 52% 54% 56% 58% 59% 59% 58% 56% 54% 51% 49% 47% 44% 42%
Thu, 30 Jan 24% 23% 22% 21% 20% 20% 20% 20% 21% 21% 21% 22% 22% 22% 22% 22%
Fri, 31 Jan 24% 25% 25% 26% 27% 27% 27% 26% 25% 24% 23% 22% 22% 23% 24% 25%
Sat, 01 Feb 25% 24% 22% 21% 20% 19% 18% 18% 18% 18% 19% 19% 20% 21% 21% 22%
Sun, 02 Feb 31% 32% 33% 33% 33% 33% 33% 32% 31% 30% 29% 28% 27% 27% 28% 28%
Mon, 03 Feb 27% 26% 26% 25% 25% 24% 24% 24% 24% 26% 25% 24% 23% 23% 24% 25%
Tue, 04 Feb 16% 17% 18% 20% 22% 24% 26% 27% 27% 27% 27% 27% 26% 25% 24% 23%

Percentages are the chance of rain.

Weather data by Open-Meteo

Brecon Beacons hourly weather (Met Office)

Sunset: 16:41. Dusk: 17:19. Dark: 18:00. Moon 58% (00:25 to dawn)

Updated: Tue, 21-Jan at 02:00

06 09 12 15 18 21
Today 🌫 15% 6% 5% 6% 6% 9%
Wed, 22 Jan 🌫 21% 🌫 20% 🌫 17% 11% 8% 9%
Thu, 23 Jan 15% 64% 81% 62% 42% 8%
Fri, 24 Jan 97% 93% 48% 19% 37% 18%
Sat, 25 Jan 16% 13% 17% 22% 41% 38%
Sun, 26 Jan 12% 12% 16% 24% 78% 80%
Mon, 27 Jan 69% 77% 67% 63% 61% 59%

Percentages are the chance of rain.

Weather data by Met Office

Regional weather (Met Office)

Sunset: 16:41. Dusk: 17:19. Dark: 18:00. Moon 58% (00:25 to dawn)

Updated: Tue, 21-Jan at 02:38

Wales

Cloudy, cool and mainly settled with light winds.

  • Dry in the south this evening, with occasional clear spells allowing some mist and fog patches to form by dawn
  • Cloudier in the north with light rain and drizzle persisting in places
  • Chilly with a frost developing in rural spots
  • Minimum Temperature 0C

Tuesday:

  • Early morning mist and fog lift to give a settled day
  • Brighter in the afternoon with some sunny spells, though remaining cloudy with patchy rain and drizzle in the north
  • Maximum Temperature 6C

Outlook for Wednesday to Friday:

  • Showery rain is possible in places on Wednesday and feeling chilly with perhaps frost and fog overnight
  • Turning increasingly unsettled from Thursday with gales and heavy rain likely by Friday

UK Day 6-7 and week 2

  • This looks like being and unsettled and disturbed period of weather across much of the country, but especially for northern and western parts, with southern and eastern areas probably missing the worst of the conditions a lot of the time
  • Over the weekend, after Friday's deep low and associated stormy weather, another system looks likely to move towards the UK from the Atlantic, driven in by the strong jet stream
  • There is the potential for further weather warnings or even a named storm at some point
  • Temperatures overall, are likely to end up being around normal or slightly above average, though given the strength of wind at times, it probably won't feel especially mild, especially when it's raining too

UK Week 3 and 4

  • Generally mild at first, with periods of rain, showers and strong winds, alternating with short-lived brighter and cooler interludes, but with time these should become increasingly confined to northern parts
  • Pressure may build across southern areas, which would result in longer drier and more-settled spells here, albeit with an increased chance of overnight fog and frost with temperatures falling correspondingly

Weather data by Met Office

Brecon Beacons mountain weather forecast (Met Office)

Updated: Mon, 20-Jan at 16:55

Specialist mountain forecast: MWIS

Evening
Mon, 20-Jan

A dull, damp evening with a lot of cloud shrouding the mountains and mist and fog forming in the valleys, fresh southwesterly winds.

Tomorow
Tue, 21-Jan

Mostly cloudy with outbreaks of rain which will turn to sleet on the higher mountains, perhaps brighter and drier in the south and east.

Mist and fog slow to clear in places. Outbreaks of drizzly rain and overcast cloud for much of the morning, tending to brighten a little further south and east where there could be a few brighter spells in the afternoon. Mountains further north and west will see the worst conditions.

Medium risk Blizzards Severe Chill Effect
Medium risk Blizzards Severe Chill Effect
High risk Poor Visibility
Chance of Cloud free tops 20% most likely around southern hills in the afternoon.
Ground conditions Please see - https://yrwyddfa.live/
Visibility Layers of overcast cloud above 300m for much of the day, further south and east cloud will be more scattered above 400m with some breaks possible further south in the afternoon. Prepare for cloudy conditions on the summits. Visibility below the cloud will be good but turning moderate in drizzly rain. Visibility will be very poor on the summits for much of the day and in fog early in the day.
Confidence Cloudy conditions on Tuesday but uncertainty over the chance of cloud breaks developing. A stormy period of weather likely towards the end of the week, keep an eye on latest forecasts.
View Mostly fresh or strong south or southwesterly winds. Freezing level lowering later in the day so precipitation may turn wintry on higher mountains.

Conditions on the tops at 900m

Time Weather Rain Temp Wind Freezing
00:00 Light rain 70% 1 23 1300m
03:00 Light rain 70% 1 24 1300m
06:00 Sleet 80% 1 23 1300m
09:00 Sleet 80% 0 24 1200m
12:00 Sleet 70% -0 23 1000m
15:00 Sleet 80% -0 14 1000m
18:00 Sleet 80% -0 9 1000m
21:00 Light snow 70% -1 6 1000m
Wed, 22-Jan

Cloudy but some bright or sunny spells developing, risk of a few afternoon showers otherwise mainly dry, feeling chilly but light winds.

Ice 800m
Visibility Broken cloud layers above 500m will thin and lift for a time during the day, especially around northern fells, cloud patches lingers further south. Visibility will generally be good or very good, although perhaps moderate later.
Wind Southwesterly 10 mph
Temp (tops) Zero Celsius at 800m
Thu, 23-Jan

Feeling cold with freezing level around 800m some showers will turn wintry on the higher tops, some brighter spells away from showers but strong southwesterly winds in the afternoon.

Fri, 24-Jan

Wet conditions with gales likely, some sunny spells possible later in the day, Freezing level lifting above all summits.

Sat, 25-Jan

Southwesterly wind remaining fresh or strong but a lot of brighter weather, tuning colder again with a significant windchill likely.

Weather data by Met Office

Brecon Beacons Air Quality (Pollen and UV)

Updated: Tue, 21-Jan at 02:37

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   air q   air q   air q   air q   air q   air q   air q UV air q UV air q UV air q UV air q UV air q UV air q UV air q UV air q   air q   air q   air q   air q   air q   air q  
Wed, 22 Jan air q   air q   air q   air q   air q   air q   air q   air q   air q   air q UV air q UV air q UV air q UV air q UV air q UV air q UV air q UV air q   air q   air q   air q   air q   air q   air q  
Thu, 23 Jan air q   air q   air q   air q   air q   air q   air q   air q   air q   air q UV air q UV air q UV air q UV air q UV air q UV air q UV air q UV air q   air q   air q   air q   air q   air q   air q  
Fri, 24 Jan air q   air q   air q   air q   air q   air q   air q   air q   air q   air q   air q UV air q UV air q UV air q UV air q UV air q UV air q UV air q   air q   air q   air q   air q   air q   air q  

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: Mon, 20-Jan at 08:37

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 12km 50km 3km 2km 0km 0km 0km 0km 0km 0km 0km 0km 0km 0km
Tue, 21 Jan 0km 0km 0km 0km 0km 0km 0km 1km 1km 2km 0km 0km 0km 0km 0km 0km
Wed, 22 Jan 0km 0km 0km 0km 0km 0km 0km 1km 0km 22km 14km 17km 17km 13km 14km 13km
Thu, 23 Jan 4km 3km 2km 1km 1km 0km 0km 0km 0km 0km 0km 1km 1km 1km 1km 1km
Fri, 24 Jan 4km 3km 2km 0km 12km 23km 34km 32km 29km 26km 21km 16km 12km 11km 9km 8km

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
Mon, 20-Jan 06:49 07:31 08:09 12:24 16:41 17:19 18:00 09:48
Tue, 21-Jan 06:48 07:30 08:08 12:25 16:42 17:20 18:02 09:50
Wed, 22-Jan 06:47 07:28 08:06 12:25 16:44 17:22 18:03 09:53
Thu, 23-Jan 06:46 07:27 08:05 12:25 16:46 17:24 18:05 09:56
Fri, 24-Jan 06:45 07:26 08:04 12:25 16:47 17:25 18:06 09:58
Sat, 25-Jan 06:44 07:25 08:03 12:26 16:49 17:27 18:08 10:01
Sun, 26-Jan 06:43 07:24 08:01 12:26 16:51 17:28 18:10 10:04
Mon, 27-Jan 06:42 07:23 08:00 12:26 16:53 17:30 18:11 10:07
Tue, 28-Jan 06:41 07:21 07:58 12:26 16:55 17:32 18:13 10:10
Wed, 29-Jan 06:39 07:20 07:57 12:26 16:56 17:33 18:14 10:13
Thu, 30-Jan 06:38 07:19 07:56 12:27 16:58 17:35 18:16 10:16
Fri, 31-Jan 06:37 07:17 07:54 12:27 17:00 17:37 18:17 10:19
Sat, 01-Feb 06:35 07:16 07:52 12:27 17:02 17:38 18:19 10:22
Sun, 02-Feb 06:34 07:15 07:51 12:27 17:04 17:40 18:21 10:25
Mon, 03-Feb 06:33 07:13 07:49 12:27 17:06 17:42 18:22 10:28
Tue, 04-Feb 06:31 07:12 07:48 12:27 17:07 17:44 18:24 10:32
Wed, 05-Feb 06:30 07:10 07:46 12:27 17:09 17:45 18:25 10:35
Thu, 06-Feb 06:28 07:08 07:44 12:27 17:11 17:47 18:27 10:38
Fri, 07-Feb 06:27 07:07 07:42 12:27 17:13 17:49 18:29 10:42
Sat, 08-Feb 06:25 07:05 07:41 12:27 17:15 17:51 18:30 10:45
Sun, 09-Feb 06:24 07:03 07:39 12:27 17:17 17:52 18:32 10:48
Mon, 10-Feb 06:22 07:02 07:37 12:27 17:19 17:54 18:34 10:52
Tue, 11-Feb 06:20 07:00 07:35 12:27 17:20 17:56 18:35 10:55
Wed, 12-Feb 06:19 06:58 07:33 12:27 17:22 17:58 18:37 10:59
Thu, 13-Feb 06:17 06:56 07:31 12:27 17:24 17:59 18:39 11:02
Fri, 14-Feb 06:15 06:55 07:30 12:27 17:26 18:01 18:40 11:06
Sat, 15-Feb 06:13 06:53 07:28 12:27 17:28 18:03 18:42 11:10
Sun, 16-Feb 06:12 06:51 07:26 12:27 17:30 18:05 18:44 11:13
Mon, 17-Feb 06:10 06:49 07:24 12:27 17:32 18:06 18:46 11:17
Tue, 18-Feb 06:08 06:47 07:22 12:27 17:33 18:08 18:47 11:20
Wed, 19-Feb 06:06 06:45 07:20 12:27 17:35 18:10 18:49 11:24
Thu, 20-Feb 06:04 06:43 07:18 12:27 17:37 18:12 18:51 11:28
Fri, 21-Feb 06:02 06:41 07:16 12:27 17:39 18:13 18:52 11:32
Sat, 22-Feb 06:00 06:39 07:13 12:27 17:41 18:15 18:54 11:35
Sun, 23-Feb 05:58 06:37 07:11 12:27 17:43 18:17 18:56 11:39
Mon, 24-Feb 05:56 06:35 07:09 12:26 17:44 18:19 18:58 11:43
Tue, 25-Feb 05:54 06:33 07:07 12:26 17:46 18:20 18:59 11:47
Wed, 26-Feb 05:52 06:31 07:05 12:26 17:48 18:22 19:01 11:50
Thu, 27-Feb 05:50 06:29 07:03 12:26 17:50 18:24 19:03 11:54
Fri, 28-Feb 05:48 06:27 07:01 12:26 17:52 18:26 19:05 11:58
Sat, 01-Mar 05:46 06:25 06:59 12:26 17:53 18:27 19:06 12:02
Sun, 02-Mar 05:44 06:23 06:56 12:25 17:55 18:29 19:08 12:06
Mon, 03-Mar 05:42 06:20 06:54 12:25 17:57 18:31 19:10 12:10
Tue, 04-Mar 05:39 06:18 06:52 12:25 17:59 18:33 19:12 12:14
Wed, 05-Mar 05:37 06:16 06:50 12:25 18:01 18:34 19:13 12:18
Thu, 06-Mar 05:35 06:14 06:47 12:24 18:02 18:36 19:15 12:22
Fri, 07-Mar 05:33 06:12 06:45 12:24 18:04 18:38 19:17 12:26
Sat, 08-Mar 05:31 06:09 06:43 12:24 18:06 18:40 19:19 12:30
Sun, 09-Mar 05:28 06:07 06:41 12:24 18:08 18:41 19:20 12:34
Mon, 10-Mar 05:26 06:05 06:38 12:23 18:09 18:43 19:22 12:38
Tue, 11-Mar 05:24 06:03 06:36 12:23 18:11 18:45 19:24 12:41
Wed, 12-Mar 05:21 06:00 06:34 12:23 18:13 18:46 19:26 12:46
Thu, 13-Mar 05:19 05:58 06:32 12:23 18:15 18:48 19:27 12:50
Fri, 14-Mar 05:17 05:56 06:29 12:22 18:16 18:50 19:29 12:54
Sat, 15-Mar 05:14 05:54 06:27 12:22 18:18 18:52 19:31 12:58
Sun, 16-Mar 05:12 05:51 06:25 12:22 18:20 18:53 19:33 13:02
Mon, 17-Mar 05:10 05:49 06:22 12:22 18:22 18:55 19:35 13:06
Tue, 18-Mar 05:07 05:47 06:20 12:21 18:23 18:57 19:37 13:10
Wed, 19-Mar 05:05 05:44 06:18 12:21 18:25 18:59 19:38 13:14
Thu, 20-Mar 05:02 05:42 06:16 12:21 18:27 19:00 19:40 13:18
Fri, 21-Mar 05:00 05:40 06:13 12:20 18:29 19:02 19:42 13:22
Sat, 22-Mar 04:57 05:37 06:11 12:20 18:30 19:04 19:44 13:26
Sun, 23-Mar 04:55 05:35 06:09 12:20 18:32 19:06 19:46 13:30
Mon, 24-Mar 04:53 05:33 06:06 12:19 18:34 19:07 19:48 13:34
Tue, 25-Mar 04:50 05:30 06:04 12:19 18:35 19:09 19:50 13:38
Wed, 26-Mar 04:48 05:28 06:02 12:19 18:37 19:11 19:52 13:43
Thu, 27-Mar 04:45 05:26 05:59 12:19 18:39 19:13 19:53 13:47
Fri, 28-Mar 04:43 05:23 05:57 12:18 18:41 19:15 19:55 13:51
Sat, 29-Mar 04:40 05:21 05:55 12:18 18:42 19:16 19:57 13:55
Sun, 30-Mar 05:38 06:18 06:52 13:18 19:44 20:18 20:59 13:59
Mon, 31-Mar 05:35 06:16 06:50 13:17 19:46 20:20 21:01 14:03
Tue, 01-Apr 05:32 06:14 06:48 13:17 19:47 20:22 21:03 14:07
Wed, 02-Apr 05:30 06:11 06:46 13:17 19:49 20:23 21:05 14:12
Thu, 03-Apr 05:27 06:09 06:43 13:16 19:51 20:25 21:07 14:16
Fri, 04-Apr 05:25 06:07 06:41 13:16 19:52 20:27 21:09 14:20
Sat, 05-Apr 05:22 06:04 06:39 13:16 19:54 20:29 21:11 14:24
Sun, 06-Apr 05:20 06:02 06:36 13:16 19:56 20:31 21:13 14:28
Mon, 07-Apr 05:17 05:59 06:34 13:15 19:58 20:32 21:15 14:32
Tue, 08-Apr 05:14 05:57 06:32 13:15 19:59 20:34 21:17 14:37
Wed, 09-Apr 05:12 05:55 06:30 13:15 20:01 20:36 21:19 14:41
Thu, 10-Apr 05:09 05:52 06:28 13:15 20:03 20:38 21:21 14:45
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

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
Mon, 20-Jan 16:41 17:19 00:25 dawn 07:30 08:08 58 % 05:38
Tue, 21-Jan 16:42 17:20 01:37 dawn 07:28 08:06 49 % 06:20
Wed, 22-Jan 16:44 17:22 02:52 dawn 07:27 08:05 39 % 07:04
Thu, 23-Jan 16:46 17:24 04:08 dawn 07:26 08:04 30 % 07:52
Fri, 24-Jan 16:47 17:25 05:22 dawn 07:25 08:03 22 % 08:44
Sat, 25-Jan 16:49 17:27 06:29 dawn 07:24 08:01 14 % 09:40
Sun, 26-Jan 16:51 17:28 07:22 dawn 07:23 08:00 8 % 10:37
Mon, 27-Jan 16:53 17:30 07:21 07:58 3 % 11:35
Tue, 28-Jan 16:55 17:32 07:20 07:57 0 %
Wed, 29-Jan 16:56 17:33 07:19 07:56 0 % 12:31
Thu, 30-Jan 16:58 17:35 dusk 18:14 07:17 07:54 3 % 13:24
Fri, 31-Jan 17:00 17:37 dusk 19:42 07:16 07:52 8 % 14:15
Sat, 01-Feb 17:02 17:38 dusk 21:09 07:15 07:51 15 % 15:03
Sun, 02-Feb 17:04 17:40 dusk 22:36 07:13 07:49 25 % 15:52
Mon, 03-Feb 17:06 17:42 dusk 00:04 07:12 07:48 35 % 16:41
Tue, 04-Feb 17:07 17:44 dusk 01:33 07:10 07:46 46 % 17:32
Wed, 05-Feb 17:09 17:45 dusk 03:03 07:08 07:44 58 % 18:26
Thu, 06-Feb 17:11 17:47 dusk 04:27 07:07 07:42 68 % 19:23
Fri, 07-Feb 17:13 17:49 dusk 05:40 07:05 07:41 78 % 20:23 after dusk
Sat, 08-Feb 17:15 17:51 dusk 06:34 07:03 07:39 86 % 21:23 after dusk
Sun, 09-Feb 17:17 17:52 dusk dawn 07:02 07:37 93 % 22:21 all night
Mon, 10-Feb 17:19 17:54 dusk dawn 07:00 07:35 97 % 23:15 all night
Tue, 11-Feb 17:20 17:56 dusk dawn 06:58 07:33 100 % 00:05 all night
Wed, 12-Feb 17:22 17:58 dusk dawn 06:56 07:31 100 % 00:51 all night
Thu, 13-Feb 17:24 17:59 18:33 dawn 06:55 07:30 98 % 01:34 before dawn
Fri, 14-Feb 17:26 18:01 19:46 dawn 06:53 07:28 94 % 02:15 before dawn
Sat, 15-Feb 17:28 18:03 20:58 dawn 06:51 07:26 89 % 02:54 before dawn
Sun, 16-Feb 17:30 18:05 22:09 dawn 06:49 07:24 83 % 03:34 before dawn
Mon, 17-Feb 17:32 18:06 23:21 dawn 06:47 07:22 75 % 04:15
Tue, 18-Feb 17:33 18:08 00:34 dawn 06:45 07:20 66 % 04:57
Wed, 19-Feb 17:35 18:10 01:49 dawn 06:43 07:18 57 % 05:43
Thu, 20-Feb 17:37 18:12 03:03 dawn 06:41 07:16 48 % 06:33
Fri, 21-Feb 17:39 18:13 04:13 dawn 06:39 07:13 38 % 07:26
Sat, 22-Feb 17:41 18:15 05:12 dawn 06:37 07:11 28 % 08:22
Sun, 23-Feb 17:43 18:17 05:57 dawn 06:35 07:09 20 % 09:19
Mon, 24-Feb 17:44 18:19 06:29 dawn 06:33 07:07 12 % 10:15
Tue, 25-Feb 17:46 18:20 06:31 07:05 6 % 11:10
Wed, 26-Feb 17:48 18:22 06:29 07:03 2 %
Thu, 27-Feb 17:50 18:24 06:27 07:01 0 % 12:02
Fri, 28-Feb 17:52 18:26 dusk 18:42 06:25 06:59 1 % 12:53
Sat, 01-Mar 17:53 18:27 dusk 20:12 06:23 06:56 6 % 13:43
Sun, 02-Mar 17:55 18:29 dusk 21:43 06:20 06:54 12 % 14:33
Mon, 03-Mar 17:57 18:31 dusk 23:15 06:18 06:52 21 % 15:25
Tue, 04-Mar 17:59 18:33 dusk 00:47 06:16 06:50 31 % 16:20
Wed, 05-Mar 18:01 18:34 dusk 02:16 06:14 06:47 42 % 17:17
Thu, 06-Mar 18:02 18:36 dusk 03:33 06:12 06:45 54 % 18:17
Fri, 07-Mar 18:04 18:38 dusk 04:33 06:09 06:43 64 % 19:17
Sat, 08-Mar 18:06 18:40 dusk 05:14 06:07 06:41 74 % 20:16
Sun, 09-Mar 18:08 18:41 dusk 05:42 06:05 06:38 83 % 21:11 after dusk
Mon, 10-Mar 18:09 18:43 dusk 06:01 06:03 06:36 90 % 22:01 after dusk
Tue, 11-Mar 18:11 18:45 dusk dawn 06:00 06:34 95 % 22:48 all night
Wed, 12-Mar 18:13 18:46 dusk dawn 05:58 06:32 98 % 23:31 all night
Thu, 13-Mar 18:15 18:48 dusk dawn 05:56 06:29 100 % 00:12 all night
Fri, 14-Mar 18:16 18:50 dusk dawn 05:54 06:27 100 % 00:52 all night
Sat, 15-Mar 18:18 18:52 19:55 dawn 05:51 06:25 97 % 01:31 before dawn
Sun, 16-Mar 18:20 18:53 21:06 dawn 05:49 06:22 93 % 02:11 before dawn
Mon, 17-Mar 18:22 18:55 22:19 dawn 05:47 06:20 88 % 02:53 before dawn
Tue, 18-Mar 18:23 18:57 23:33 dawn 05:44 06:18 81 % 03:38 before dawn
Wed, 19-Mar 18:25 18:59 00:48 dawn 05:42 06:16 73 % 04:26
Thu, 20-Mar 18:27 19:00 01:59 dawn 05:40 06:13 64 % 05:17
Fri, 21-Mar 18:29 19:02 03:02 dawn 05:37 06:11 55 % 06:10
Sat, 22-Mar 18:30 19:04 03:51 dawn 05:35 06:09 45 % 07:05
Sun, 23-Mar 18:32 19:06 04:27 dawn 05:33 06:06 35 % 08:00
Mon, 24-Mar 18:34 19:07 04:53 dawn 05:30 06:04 25 % 08:55
Tue, 25-Mar 18:35 19:09 05:12 dawn 05:28 06:02 16 % 09:47
Wed, 26-Mar 18:37 19:11 05:26 05:59 9 % 10:38
Thu, 27-Mar 18:39 19:13 05:23 05:57 3 % 11:28
Fri, 28-Mar 18:41 19:15 05:21 05:55 0 %
Sat, 29-Mar 18:42 19:16 06:18 06:52 0 % 12:19
Sun, 30-Mar 19:44 20:18 dusk 21:43 06:16 06:50 3 % 14:12
Mon, 31-Mar 19:46 20:20 dusk 23:19 06:14 06:48 9 % 15:07
Tue, 01-Apr 19:47 20:22 dusk 00:54 06:11 06:46 17 % 16:05
Wed, 02-Apr 19:49 20:23 dusk 02:19 06:09 06:43 27 % 17:07
Thu, 03-Apr 19:51 20:25 dusk 03:28 06:07 06:41 38 % 18:09
Fri, 04-Apr 19:52 20:27 dusk 04:16 06:04 06:39 49 % 19:10
Sat, 05-Apr 19:54 20:29 dusk 04:47 06:02 06:36 59 % 20:07
Sun, 06-Apr 19:56 20:31 dusk 05:09 05:59 06:34 69 % 20:59
Mon, 07-Apr 19:58 20:32 dusk 05:24 05:57 06:32 78 % 21:47 after dusk
Tue, 08-Apr 19:59 20:34 dusk 05:36 05:55 06:30 86 % 22:30 after dusk
Wed, 09-Apr 20:01 20:36 dusk 05:45 05:52 06:28 92 % 23:12 after dusk
Thu, 10-Apr 20:03 20:38 dusk dawn 05:50 06:25 96 % 23:51 all night
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

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.