Brecon Circular via Y Gaer Battle and Pen Y Crug Walk

Lowland walk along rivers, via a Roman Fort and a low ridge to an ancient hill fort

Hiking weather forecast

Brecon Beacons hourly weather (Visual Crossing)

Sunset: 16:44. Dusk: 17:22. Dark: 18:03. Moon 39% (02:52 to dawn)

Updated: Wed, 22-Jan at 20:39

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%
Thu, 23 Jan 0% 100% 100% 100% 100% 100% 100% 65% 65% 65% 65% 65% 65% 81% 81% 81%
Fri, 24 Jan 100% 39% 39% 39% 39% 39% 39% 13% 13% 13% 13% 13% 13% 3% 3% 3%
Sat, 25 Jan 16% 13% 13% 13% 13% 13% 13% 19% 19% 19% 19% 19% 19% 29% 29% 29%
Sun, 26 Jan 29% 32% 32% 🌫 32% 🌫 32% 🌫 32% 32% 74% 74% 74% 74% 74% 74% 90% 90% 90%
Mon, 27 Jan 90% 84% 84% 84% 84% 84% 84% 84% 84% 84% 84% 84% 84% 74% 74% 74%
Tue, 28 Jan 58% 48% 48% 48% 48% 48% 48% 39% 39% 39% 39% 39% 39% 42% 42% 42%
Wed, 29 Jan 52% 61% 61% 61% 61% 61% 61% 61% 61% 61% 61% 61% 61% 32% 32% 32%
Thu, 30 Jan 36% 36% 36% 36% 36% 36% 36% 39% 39% 39% 39% 39% 39% 36% 36% 36%
Fri, 31 Jan 32% 16% 16% 16% 16% 16% 16% 13% 13% 13% 13% 13% 13% 13% 13% 13%
Sat, 01 Feb 16% 10% 10% 10% 10% 10% 10% 13% 13% 13% 13% 13% 13% 19% 19% 🌫 19%
Sun, 02 Feb 🌫 16% 🌫 23% 🌫 23% 🌫 23% 🌫 23% 23% 23% 16% 16% 16% 16% 16% 16% 13% 13% 13%
Mon, 03 Feb 🌫 16% 29% 29% 29% 29% 29% 29% 19% 19% 19% 19% 19% 19% 23% 23% 23%
Tue, 04 Feb 29% 36% 36% 36% 36% 36% 36% 26% 26% 26% 26% 26% 26% 19% 19% 19%
Wed, 05 Feb 13% 29% 29% 29% 29% 29% 29% 32% 32% 32% 32% 32% 32% 32% 32% 32%

Percentages are the chance of rain.

Weather data by Visual Crossing

Brecon Beacons hourly weather (Open Meteo)

Sunset: 16:44. Dusk: 17:22. Dark: 18:03. Moon 39% (02:52 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: 16:44. Dusk: 17:22. Dark: 18:03. Moon 39% (02:52 to dawn)

Updated: Wed, 22-Jan at 19:00

06 09 12 15 18 21
Today 77%
Thu, 23 Jan 52% 92% 90% 66% 4% 5%
Fri, 24 Jan 98% 59% 47% 6% 62% 61%
Sat, 25 Jan 30% 8% 8% 29% 63% 78%
Sun, 26 Jan 7% 10% 86% 66% 62% 50%
Mon, 27 Jan 67% 64% 68% 71% 67% 65%
Tue, 28 Jan 63% 61% 46% 58% 56% 53%
Wed, 29 Jan 30% 60% 59% 51% 49%

Percentages are the chance of rain.

Weather data by Met Office

Regional weather (Met Office)

Sunset: 16:44. Dusk: 17:22. Dark: 18:03. Moon 39% (02:52 to dawn)

Updated: Wed, 22-Jan at 20:38

Wales

Chilly tonight with fog and frost forming beneath clear skies.

  • Cloud clears eastwards, with light winds and clear skies bringing a rather chilly night
  • Pockets of frost and patchy fog expected to form in rural parts
  • Turning breezier early Friday morning, with scattered showers arriving from the southwest
  • Minimum Temperature 1C

Thursday:

  • Windy, particularly along the coasts, with heavy rain spreading rapidly eastwards through the morning
  • Turning brighter later, and less windy, though with a few scattered showers still to come
  • Maximum Temperature 8C

Outlook for Friday to Sunday:

  • Storm Γ‰owyn brings wet and very windy conditions on Friday morning
  • Winds easing into the afternoon and becoming more settled by Saturday
  • Increasingly windy on Sunday with rain arriving later

UK Day 6-7 and week 2

  • This looks like being and unsettled period across much of the country, but especially for northern and western parts
  • During Monday, another deep area of low pressure looks likely to move across the UK from the Atlantic, bringing wet and windy conditions to most if not all parts
  • Further spells of wet and windy weather look like moving east from the Atlantic to affect the UK during the rest of the period too, with drier, brighter spells in between
  • 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 or slightly above average, though wind and rain will make it feel chilly, and brief cool spells with some overnight frost are likely between weather systems

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
  • These may become increasingly confined to northern parts during this period though, with pressure possibly building across southern areas in particular
  • This would result in longer drier and more-settled spells here, albeit with an increased chance of overnight fog and frost and temperatures falling a little correspondingly

Weather data by Met Office

Brecon Beacons mountain weather forecast (Met Office)

Updated: Wed, 22-Jan at 17:26

Specialist mountain forecast: MWIS

Evening
Wed, 22-Jan

Mainly cloudy with scattered showers, these wintry above 500-600m. Light winds. Freezing level 600-700m.

Tomorow
Thu, 23-Jan

Period of rain and summit snow during the morning, clearing to scattered showers for afternoon. Summit gales bringing a severe wind chill later.

Mainly cloudy overnight with some scattered light showers. Band of rain and snow reaching from the west before mid-morning, clearing eastwards during the afternoon, with scattered showers soon following from the west. Further band of rain and summit snow developing towards midnight. Snow level 700-900m at first lowering 400-500m from mid-afternoon.

Low risk Heavy Persistent Snow Gales
Low risk Heavy Persistent Snow Gales
Medium risk Poor Visibility
High risk Severe Chill Effect
Chance of Cloud free tops 30% lowering less than 10% by late morning, increasing 70% by early evening.
Ground conditions Please see - https://yrwyddfa.live/
Visibility Good falling moderate or poor in rain, very poor in snow and within cloud with bases becoming extensive from 450m from mid-morning, before lifting and breaking during the afternoon
Confidence High for very windy and unsettled through Friday, then changeable from the weekend, but lowering for the transition detail.
View Very difficult conditions with extensive hill fog, rain and summit snow during the morning, then gales later in the day bringing a severe wind chill.

Conditions on the tops at 900m

Time Weather Rain Temp Wind Freezing
00:00 Light snow showers (night) 30% 0 19 900m
03:00 Partly cloudy (night) 20% 0 25 900m
06:00 Partly cloudy (night) 10% 0 30 900m
09:00 Sleet 60% 1 43 1000m
12:00 Heavy snow 80% 0 46 900m
15:00 Sunny intervals 20% -2 44 600m
18:00 Partly cloudy (night) 10% -2 36 500m
21:00 Cloudy <05% -2 32 500m
Fri, 24-Jan

Hazardous through the morning in storm force winds coupled with occasional rain and summit snow. Clearing to showers for the afternoon, as the winds slowly ease. Snow level 700m at first lowering 500m in later showers.

Ice Above summits lowering 600m by late afternoon
Visibility Good falling moderate or poor in rain, very poor in snow and within cloud with bases quite extensive from 500m before lifting and breaking by the afternoon
Wind South to southwest mean 50-60mph with gusts 80mph plus, gradually easing from mid-day.
Temp (tops) Plus 2 Celsius at dawn lowering minus 2 Celsius late afternoon at 800m
Sat, 25-Jan

Dry with good periods of sunshine at first, then a few showers later in the day. Fresh southwest summit breezes. Freezing level around 600m.

Sun, 26-Jan

Mainly dry and occasionally bright early, then a band of rain and summit snow reaching the area later in the day, as southeast winds strengthen to gale force. Freezing level 400m increasing 700m later.

Mon, 27-Jan

Cloudy and showery with strong to gale south to southwest summit winds and a freezing level above the summits.

Weather data by Met Office

Brecon Beacons Air Quality (Pollen and UV)

Updated: Wed, 22-Jan at 20:37

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  
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 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  
Sat, 25 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  

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
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
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

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
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
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

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.