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: 20:19. Dusk: 20:55. Moon: 86% (dusk to 05:15)

Updated: 08:31 on Fri, 19-Apr

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 0% 29% 29% 29% 29% 29% 13% 13% 13% 13% 13% 13% 0% 0%
Sat, 20-Apr 0% 0% 0% 0% 0% 0% 0% 0% 10% 10% 10% 10% 10% 10% 0% 0%
Sun, 21-Apr 0% 0% 0% 0% 0% 0% 0% 0% 19% 19% 19% 19% 19% 19% 0% 0%
Mon, 22-Apr 13% 13% 29% 29% 29% 29% 29% 29% 29% 29% 29% 29% 29% 29% 13% 13%
Tue, 23-Apr 19% 19% 32% 32% 32% 32% 32% 32% 48% 48% 48% 48% 48% 48% 3% 3%
Wed, 24-Apr 13% 13% 16% 16% 16% 16% 16% 16% 32% 32% 32% 32% 32% 32% 13% 13%
Thu, 25-Apr 3% 3% 23% 23% 23% 23% 23% 23% 61% 61% 61% 61% 61% 61% 3% 3%
Fri, 26-Apr 13% 13% 26% 26% 26% 26% 26% 26% 68% 68% 68% 68% 68% 68% 16% 16%
Sat, 27-Apr 23% 23% 45% 45% 45% 45% 45% 45% 68% 68% 68% 68% 68% 68% 13% 13%
Sun, 28-Apr 16% 16% 36% 36% 36% 36% 36% 36% 45% 45% 45% 45% 45% 45% 16% 16%
Mon, 29-Apr 19% 19% 32% 32% 32% 32% 32% 32% 45% 45% 45% 45% 45% 45% 23% 23%
Tue, 30-Apr 13% 13% 29% 29% 29% 29% 29% 29% 32% 32% 32% 32% 32% 32% 7% 7%
Wed, 01-May 7% 7% 13% 13% 13% 13% 13% 13% 29% 29% 29% 29% 29% 29% 13% 13%
Thu, 02-May 10% 10% 23% 23% 23% 23% 23% 23% 42% 42% 42% 42% 42% 42% 13% 13%
Fri, 03-May 10% 10% 32% 32% 32% 32% 32% 32% 45% 45% 45% 45% 45% 45% 10% 10%

Powered by Visual Crossing Weather

Brecon Beacons hourly weather (Open Meteo)

Sunset: 20:19. Dusk: 20:55. Moon: 86% (dusk to 05:15)

Updated: 08:32 on Fri, 19-Apr

06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
Today 0% 2% 4% 6% 23% 41% 58% 48% 39% 29% 19% 10% 0% 0%
Sat, 20-Apr 0% 0% 0% 0% 0% 0% 0% 0% 0% 2% 4% 6% 9% 13% 16% 12%
Sun, 21-Apr 0% 0% 0% 0% 0% 0% 1% 2% 3% 4% 5% 6% 7% 9% 10% 8%
Mon, 22-Apr 0% 0% 0% 4% 9% 13% 16% 20% 23% 31% 40% 48% 44% 39% 35% 29%
Tue, 23-Apr 7% 9% 10% 10% 10% 10% 15% 21% 26% 27% 28% 29% 28% 27% 26% 23%
Wed, 24-Apr 3% 3% 3% 5% 8% 10% 12% 14% 16% 20% 25% 29% 30% 31% 32% 25%
Thu, 25-Apr 10% 10% 10% 9% 7% 6% 10% 15% 19% 27% 34% 42% 41% 40% 39% 29%
Fri, 26-Apr 5% 8% 10% 9% 7% 6% 22% 39% 55% 56% 57% 58% 55% 51% 48% 37%
Sat, 27-Apr

Weather data by Open-Meteo.com

Brecon Beacons hourly weather (Met Office)

Sunset: 20:19. Dusk: 20:55. Moon: 86% (dusk to 05:15)

Updated: 07:00 on Fri, 19-Apr

06 09 12 15 18 21
Today 🌫 22% 56% 54% 7% 8% 0%
Sat, 20-Apr 0% 0% 8% 8% 8% 5%
Sun, 21-Apr 1% 1% 7% 11% 16% 8%
Mon, 22-Apr 6% 10% 11% 27% 44% 11%
Tue, 23-Apr 12% 11% 7% 8% 10% 3%
Wed, 24-Apr 6% 6% 9% 8% 3% 2%
Thu, 25-Apr 9% 7% 8% 12% 9% 9%
Fri, 26-Apr 9%

Powered by Met Office data.

Brecon Beacons weather (Met Office)

Updated: 02:02 on Fri, 19-Apr

Cloudy with patchy rain at first, drier later. Breezy.

Today:

  • Cloudy to start with patchy light rain and drizzle clearing.
  • Cloud gradually breaking to allow some sunny intervals later.
  • Perhaps a few light showers in the east later.
  • A brisk northwesterly breeze.
  • Maximum Temperature 14C.

Tonight:

  • Any showers dying out to leave a dry and largely clear night.
  • Cold under clear skies and lighter winds, with a patchy frost likely in sheltered spots.
  • Minimum Temperature 0C.

Saturday:

  • A chilly start, with a patchy frost.
  • A dry day to follow with variable cloud and some sunny intervals.
  • Temperatures around average.
  • Lighter winds.
  • Maximum Temperature 14C.

Sunday to Tuesday:

  • Cloudier on Sunday with patchy rain or showers possible, this continuing into the new week with sunny breaks at times.
  • Generally light winds and temperatures around average.

UK Day 6-7 and week 2

  • This period will be dominated by high pressure to the northwest of the UK and lower pressure to the southeast over the near continent, and the extent to which of these systems dominates at any particular time.
  • The wind will probably therefore predominantly come from a northerly or easterly direction, so temperatures at least in the east are likely to remain around or a little below average, with any warmer conditions generally further west - and with the sun quite strong, it could feel very warm at times.
  • There should be a reasonable amount of dry weather around, especially in the north and west, but some rain or showers are likely at times, most-likely in the south and east, but amounts are expected to be modest.

UK Week 3 and 4

  • During the early part of May high pressure will probably remain close to the north or northwest UK, with the driest conditions here.
  • Further south and east, especially at first, there is a greater chance of some showers at times.
  • As we move further into May signals are finely balanced between drier than average and wetter than average conditions.
  • As such fairly typical conditions are likely, with some good spells of dry weather just about anywhere, but also some more unsettled, showery interludes.
  • Temperatures overall will probably be near normal, rising through the period, and could trend toward the warm side of average later, with warm days most likely in the west.

Powered by Met Office data.

Brecon Beacons mountain weather forecast (Met Office)

Sunset: 20:19. Dusk: 20:55. Moon: 86% (dusk to 05:15)

Updated: 04:40 on Fri, 19-Apr

Today
Fri, 19-Apr

Damp start, with sunny breaks developing in the afternoon.

Mostly cloudy and windy to begin the day with patchy outbreaks of rain and drizzle. Rain turning to showers will ease by lunchtime, as cloud gradually lifts with more breaks developing. The afternoon should see clearer skies with plenty of sunny spells. Winds will be slower to drop, however by the evening should have appreciably lowered, with temperatures dipping sharply during the evening as a result.

Chance of Cloud free tops 20% rising to 90%
Visibility Periods of cloud above 500m until mid-morning, then patchy cloud above 700-800m until lunchtime but all summits free of cloud for much of the afternoon. Excellent visibility below the cloud. Locally very poor in the cloud and moderate in rain or showers.
Confidence High for increasingly settled weather. Moderate for cloud amounts and shower detail into Monday.
View There will be a marked difference between conditions early and late, with layers advisable to react to the changes. Note however there will still be a wind chill at height, even after the sun comes out later.
Low risk Severe Chill Effect Poor Visibility
Medium risk Strong Sunlight

Conditions on the tops

Time Weather Rain Temp Wind Freezing
06:00 Fog 50% 6 21 1500m
09:00 Light rain 30% 6 22 1400m
12:00 Sunny intervals 10% 6 21 1400m
15:00 Sunny intervals 10% 7 23 1300m
18:00 Sunny intervals <05% 7 18 1100m
21:00 Clear night <05% 4 12 1000m
Sat, 20-Apr

A frosty start to the morning with some mist and fog patches. Some hazy sunshine is then expected, but cloud perhaps thickening a little around the middle of the day, although this should lie clear of the highest ground throughout. Feeling chilly.

Ice Near summits at first but rising.
Visibility Some fog patches possible first thing, otherwise cloud above summits with very good visibility throughout.
Wind Variable, mainly northerly, 5-10 mph gusting 15 mph
Temp Plus 5 Celsius. (at high level)
Sun, 21-Apr

Probably cloudier than on Saturday but still the chance of some sunny intervals. Perhaps the odd spot of rain in the east. Light northerly or northeasterly winds with a freezing level above summits.

Mon, 22-Apr

Turning cloudier through the morning with low cloud developing widely with some patchy rain possible. Winds becoming light northeasterly with freezing level above summits.

Tue, 23-Apr

Often cloudy with sunny breaks at times. Light northerly or northeasterly winds. Freezing level above summits.

Powered by Met Office data.

Brecon Beacons daylight

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

Day length is dusk to dawn. Times will vary a little if there is a hill on the horizon.

It should still be light enough to read at dawn and dusk, so there will be enough light for walking even earlier (later).

Brecon Beacons moonlight

Night of Sunset Dusk Moon Rise Moon Set Dawn Sunrise Phase % Full Max. Ht. Night Walk
Fri, 19-Apr 20:19 20:55 dusk 05:15 05:29 06:06 86 % 22:30 after dusk
Sat, 20-Apr 20:21 20:57 dusk 05:24 05:27 06:04 92 % 23:09 after dusk
Sun, 21-Apr 20:22 20:59 dusk dawn 05:25 06:02 96 % 23:48 all night
Mon, 22-Apr 20:24 21:01 dusk dawn 05:22 06:00 99 % 00:28 all night
Tue, 23-Apr 20:26 21:03 dusk dawn 05:20 05:57 100 % 01:10 all night
Wed, 24-Apr 20:27 21:05 21:30 dawn 05:18 05:55 99 % 01:55 before dawn
Thu, 25-Apr 20:29 21:07 22:49 dawn 05:16 05:53 96 % 02:44 before dawn
Fri, 26-Apr 20:31 21:09 00:07 dawn 05:14 05:51 91 % 03:36 before dawn
Sat, 27-Apr 20:32 21:10 01:19 dawn 05:11 05:49 85 % 04:32 before dawn
Sun, 28-Apr 20:34 21:12 02:18 dawn 05:09 05:48 76 % 05:30 before dawn
Mon, 29-Apr 20:36 21:14 03:01 dawn 05:07 05:46 67 % 06:28
Tue, 30-Apr 20:37 21:16 03:31 dawn 05:05 05:44 56 % 07:25
Wed, 01-May 20:39 21:18 03:53 dawn 05:03 05:42 45 % 08:19
Thu, 02-May 20:41 21:20 04:09 dawn 05:01 05:40 33 % 09:10
Fri, 03-May 20:42 21:22 04:22 dawn 04:59 05:38 23 % 10:00
Sat, 04-May 20:44 21:24 04:34 dawn 04:57 05:36 14 %
Sun, 05-May 20:46 21:26 04:47 dawn 04:55 05:35 7 %
Mon, 06-May 20:47 21:27 04:53 05:33 2 %
Tue, 07-May 20:49 21:29 04:51 05:31 0 %
Wed, 08-May 20:51 21:31 dusk 21:59 04:49 05:29 1 %
Thu, 09-May 20:52 21:33 dusk 23:26 04:47 05:28 4 % 14:26
Fri, 10-May 20:54 21:35 dusk 00:41 04:45 05:26 10 % 15:26
Sat, 11-May 20:55 21:37 dusk 01:36 04:43 05:24 17 % 16:25
Sun, 12-May 20:57 21:38 dusk 02:15 04:41 05:23 26 % 17:22
Mon, 13-May 20:58 21:40 dusk 02:41 04:39 05:21 35 % 18:14
Tue, 14-May 21:00 21:42 dusk 02:59 04:38 05:20 45 % 19:02
Wed, 15-May 21:01 21:44 dusk 03:12 04:36 05:18 55 % 19:46
Thu, 16-May 21:03 21:46 dusk 03:23 04:34 05:17 64 % 20:28
Fri, 17-May 21:05 21:47 dusk 03:32 04:33 05:15 73 % 21:07
Sat, 18-May 21:06 21:49 dusk 03:41 04:31 05:14 81 % 21:46 after dusk
Sun, 19-May 21:07 21:51 dusk 03:51 04:29 05:13 88 % 22:25 after dusk
Mon, 20-May 21:09 21:52 dusk 04:02 04:28 05:11 93 % 23:06 after dusk
Tue, 21-May 21:10 21:54 dusk 04:16 04:26 05:10 97 % 23:50 after dusk
Wed, 22-May 21:12 21:56 dusk dawn 04:25 05:09 100 % 00:38 all night
Thu, 23-May 21:13 21:57 dusk dawn 04:23 05:08 100 % 01:30 all night
Fri, 24-May 21:14 21:59 23:08 dawn 04:22 05:07 98 % 02:26 before dawn
Sat, 25-May 21:16 22:01 00:12 dawn 04:21 05:06 94 % 03:24 before dawn
Sun, 26-May 21:17 22:02 01:01 dawn 04:19 05:05 87 % 04:23 before dawn
Mon, 27-May 21:18 22:04 01:35 dawn 04:18 05:04 79 % 05:21 before dawn
Tue, 28-May 21:19 22:05 01:58 dawn 04:17 05:03 69 % 06:15
Wed, 29-May 21:21 22:06 02:15 dawn 04:16 05:02 59 % 07:07
Thu, 30-May 21:22 22:08 02:29 dawn 04:15 05:01 47 % 07:56
Fri, 31-May 21:23 22:09 02:41 dawn 04:14 05:00 36 % 08:44
Sat, 01-Jun 21:24 22:11 02:53 dawn 04:13 04:59 25 % 09:32
Sun, 02-Jun 21:25 22:12 03:06 dawn 04:12 04:59 16 % 10:22
Mon, 03-Jun 21:26 22:13 03:22 dawn 04:11 04:58 8 %
Tue, 04-Jun 21:27 22:14 03:43 dawn 04:10 04:57 3 %
Wed, 05-Jun 21:28 22:15 04:09 04:57 0 %
Thu, 06-Jun 21:29 22:16 dusk 22:19 04:09 04:56 0 %
Fri, 07-Jun 21:30 22:17 dusk 23:24 04:08 04:56 2 % 14:09
Sat, 08-Jun 21:31 22:18 dusk 00:10 04:08 04:55 7 % 15:08
Sun, 09-Jun 21:31 22:19 dusk 00:41 04:07 04:55 13 % 16:03
Mon, 10-Jun 21:32 22:20 dusk 01:02 04:07 04:55 21 % 16:54
Tue, 11-Jun 21:33 22:21 dusk 01:18 04:06 04:54 29 % 17:40
Wed, 12-Jun 21:33 22:22 dusk 01:30 04:06 04:54 38 % 18:23
Thu, 13-Jun 21:34 22:22 dusk 01:40 04:06 04:54 48 % 19:03
Fri, 14-Jun 21:35 22:23 dusk 01:49 04:05 04:54 57 % 19:42
Sat, 15-Jun 21:35 22:24 dusk 01:58 04:05 04:54 66 % 20:21
Sun, 16-Jun 21:36 22:24 dusk 02:08 04:05 04:54 75 % 21:01 after dusk
Mon, 17-Jun 21:36 22:25 dusk 02:21 04:05 04:54 83 % 21:44 after dusk
Tue, 18-Jun 21:36 22:25 dusk 02:37 04:05 04:54 90 % 22:30 after dusk
Wed, 19-Jun 21:37 22:25 dusk 03:01 04:06 04:54 95 % 23:20 after dusk
Thu, 20-Jun 21:37 22:25 dusk 03:35 04:06 04:54 99 % 00:15 after dusk
Fri, 21-Jun 21:37 22:26 dusk dawn 04:06 04:55 100 % 01:14 all night
Sat, 22-Jun 21:37 22:26 22:56 dawn 04:06 04:55 99 % 02:14 before dawn
Sun, 23-Jun 21:37 22:26 23:36 dawn 04:07 04:55 95 % 03:14 before dawn
Mon, 24-Jun 21:37 22:26 00:02 dawn 04:07 04:56 90 % 04:10 before dawn
Tue, 25-Jun 21:37 22:26 00:22 dawn 04:08 04:56 81 % 05:03 before dawn
Wed, 26-Jun 21:37 22:26 00:36 dawn 04:08 04:57 72 % 05:53
Thu, 27-Jun 21:37 22:25 00:49 dawn 04:09 04:57 61 % 06:42
Fri, 28-Jun 21:37 22:25 01:01 dawn 04:10 04:58 49 % 07:29
Sat, 29-Jun 21:37 22:25 01:13 dawn 04:10 04:58 38 % 08:18
Sun, 30-Jun 21:36 22:24 01:27 dawn 04:11 04:59 27 % 09:08
Mon, 01-Jul 21:36 22:24 01:46 dawn 04:12 05:00 18 % 10:02
Tue, 02-Jul 21:36 22:23 02:12 dawn 04:13 05:01 10 %
Wed, 03-Jul 21:35 22:23 02:49 dawn 04:14 05:01 5 %
Thu, 04-Jul 21:35 22:22 03:41 dawn 04:15 05:02 1 %
Fri, 05-Jul 21:34 22:21 04:16 05:03 0 %
Sat, 06-Jul 21:34 22:21 dusk 22:40 04:17 05:04 1 % 13:52
Sun, 07-Jul 21:33 22:20 dusk 23:05 04:18 05:05 4 % 14:45
Mon, 08-Jul 21:32 22:19 dusk 23:23 04:20 05:06 9 % 15:33
Tue, 09-Jul 21:31 22:18 dusk 23:36 04:21 05:07 16 % 16:18
Wed, 10-Jul 21:31 22:17 dusk 23:46 04:22 05:08 23 % 16:59
Thu, 11-Jul 21:30 22:16 dusk 23:56 04:23 05:09 32 % 17:38
Fri, 12-Jul 21:29 22:15 dusk 00:05 04:25 05:11 41 % 18:17
Sat, 13-Jul 21:28 22:14 dusk 00:14 04:26 05:12 50 % 18:56
Sun, 14-Jul 21:27 22:12 dusk 00:26 04:28 05:13 60 % 19:37
Mon, 15-Jul 21:26 22:11 dusk 00:40 04:29 05:14 69 % 20:21
Tue, 16-Jul 21:25 22:10 dusk 01:00 04:31 05:15 78 % 21:09 after dusk
Wed, 17-Jul 21:24 22:08 dusk 01:29 04:32 05:17 86 % 22:02 after dusk
Thu, 18-Jul 21:23 22:07 dusk 02:12 04:34 05:18 92 % 22:59 after dusk
Fri, 19-Jul 21:21 22:06 dusk 03:15 04:35 05:19 97 % 23:59 after dusk
Sat, 20-Jul 21:20 22:04 dusk 04:35 04:37 05:21 100 % 01:00 after dusk
Sun, 21-Jul 21:19 22:03 22:04 dawn 04:38 05:22 100 % 01:59 before dawn
Mon, 22-Jul 21:18 22:01 22:26 dawn 04:40 05:23 97 % 02:55 before dawn
Tue, 23-Jul 21:16 21:59 22:43 dawn 04:42 05:25 91 % 03:48 before dawn
Wed, 24-Jul 21:15 21:58 22:56 dawn 04:43 05:26 83 % 04:38 before dawn
Thu, 25-Jul 21:13 21:56 23:08 dawn 04:45 05:28 74 % 05:26
Fri, 26-Jul 21:12 21:54 23:20 dawn 04:47 05:29 63 % 06:15
Sat, 27-Jul 21:10 21:53 23:34 dawn 04:49 05:31 52 % 07:05
Sun, 28-Jul 21:09 21:51 23:51 dawn 04:50 05:32 41 % 07:58
Mon, 29-Jul 21:07 21:49 00:14 dawn 04:52 05:34 30 % 08:53
Tue, 30-Jul 21:06 21:47 00:47 dawn 04:54 05:35 21 % 09:50
Wed, 31-Jul 21:04 21:45 01:33 dawn 04:56 05:37 13 %
Thu, 01-Aug 21:02 21:43 02:35 dawn 04:57 05:38 6 %
Fri, 02-Aug 21:01 21:41 03:48 dawn 04:59 05:40 2 %
Sat, 03-Aug 20:59 21:39 05:01 05:41 0 %
Sun, 04-Aug 20:57 21:37 05:03 05:43 0 %
Mon, 05-Aug 20:56 21:35 dusk 21:43 05:05 05:44 2 % 14:13
Tue, 06-Aug 20:54 21:33 dusk 21:54 05:06 05:46 6 % 14:55
Wed, 07-Aug 20:52 21:31 dusk 22:03 05:08 05:48 11 % 15:35
Thu, 08-Aug 20:50 21:29 dusk 22:12 05:10 05:49 18 % 16:14
Fri, 09-Aug 20:48 21:27 dusk 22:21 05:12 05:51 25 % 16:53
Sat, 10-Aug 20:46 21:25 dusk 22:32 05:14 05:52 34 % 17:33
Sun, 11-Aug 20:44 21:23 dusk 22:44 05:15 05:54 43 % 18:15
Mon, 12-Aug 20:42 21:21 dusk 23:01 05:17 05:56 53 % 19:01
Tue, 13-Aug 20:40 21:18 dusk 23:25 05:19 05:57 63 % 19:50
Wed, 14-Aug 20:38 21:16 dusk 00:00 05:21 05:59 73 % 20:44
Thu, 15-Aug 20:36 21:14 dusk 00:53 05:23 06:00 82 % 21:42 after dusk
Fri, 16-Aug 20:34 21:12 dusk 02:05 05:25 06:02 89 % 22:42 after dusk
Sat, 17-Aug 20:32 21:10 dusk 03:31 05:26 06:04 95 % 23:42 after dusk
Sun, 18-Aug 20:30 21:07 dusk 05:05 05:28 06:05 99 % 00:40 after dusk
Mon, 19-Aug 20:28 21:05 dusk dawn 05:30 06:07 100 % 01:35 all night
Tue, 20-Aug 20:26 21:03 dusk dawn 05:32 06:09 98 % 02:28 all night
Wed, 21-Aug 20:24 21:01 21:14 dawn 05:34 06:10 93 % 03:18 before dawn
Thu, 22-Aug 20:22 20:58 21:27 dawn 05:35 06:12 85 % 04:09 before dawn
Fri, 23-Aug 20:20 20:56 21:40 dawn 05:37 06:13 76 % 05:00 before dawn
Sat, 24-Aug 20:17 20:54 21:56 dawn 05:39 06:15 66 % 05:53
Sun, 25-Aug 20:15 20:51 22:17 dawn 05:41 06:17 55 % 06:48
Mon, 26-Aug 20:13 20:49 22:46 dawn 05:42 06:18 44 % 07:45
Tue, 27-Aug 20:11 20:47 23:29 dawn 05:44 06:20 33 % 08:43
Wed, 28-Aug 20:09 20:44 00:26 dawn 05:46 06:22 24 % 09:40
Thu, 29-Aug 20:06 20:42 01:36 dawn 05:48 06:23 15 %
Fri, 30-Aug 20:04 20:40 02:52 dawn 05:49 06:25 9 %
Sat, 31-Aug 20:02 20:37 04:10 dawn 05:51 06:26 4 %
Sun, 01-Sep 20:00 20:35 05:26 dawn 05:53 06:28 1 %
Mon, 02-Sep 19:57 20:32 05:55 06:30 0 %
Tue, 03-Sep 19:55 20:30 05:56 06:31 1 % 13:34
Wed, 04-Sep 19:53 20:28 05:58 06:33 3 % 14:13
Thu, 05-Sep 19:51 20:25 dusk 20:30 06:00 06:35 7 % 14:52
Fri, 06-Sep 19:48 20:23 dusk 20:40 06:02 06:36 13 % 15:31
Sat, 07-Sep 19:46 20:20 dusk 20:51 06:03 06:38 20 % 16:12
Sun, 08-Sep 19:44 20:18 dusk 21:06 06:05 06:39 28 % 16:56
Mon, 09-Sep 19:41 20:16 dusk 21:26 06:07 06:41 37 % 17:43
Tue, 10-Sep 19:39 20:13 dusk 21:55 06:08 06:43 47 % 18:34
Wed, 11-Sep 19:37 20:11 dusk 22:39 06:10 06:44 57 % 19:29
Thu, 12-Sep 19:34 20:08 dusk 23:40 06:12 06:46 68 % 20:26
Fri, 13-Sep 19:32 20:06 dusk 00:59 06:13 06:47 78 % 21:25 after dusk
Sat, 14-Sep 19:30 20:04 dusk 02:28 06:15 06:49 86 % 22:23 after dusk
Sun, 15-Sep 19:27 20:01 dusk 04:01 06:17 06:51 93 % 23:19 after dusk
Mon, 16-Sep 19:25 19:59 dusk 05:35 06:18 06:52 98 % 00:12 after dusk
Tue, 17-Sep 19:23 19:57 dusk dawn 06:20 06:54 100 % 01:04 all night
Wed, 18-Sep 19:20 19:54 dusk dawn 06:22 06:56 99 % 01:56 all night
Thu, 19-Sep 19:18 19:52 dusk dawn 06:23 06:57 95 % 02:48 all night
Fri, 20-Sep 19:16 19:49 20:00 dawn 06:25 06:59 88 % 03:42 before dawn
Sat, 21-Sep 19:13 19:47 20:19 dawn 06:27 07:00 79 % 04:38 before dawn
Sun, 22-Sep 19:11 19:45 20:46 dawn 06:28 07:02 69 % 05:37
Mon, 23-Sep 19:09 19:42 21:24 dawn 06:30 07:04 59 % 06:36
Tue, 24-Sep 19:06 19:40 22:18 dawn 06:32 07:05 48 % 07:35
Wed, 25-Sep 19:04 19:38 23:25 dawn 06:33 07:07 38 % 08:30
Thu, 26-Sep 19:02 19:35 00:41 dawn 06:35 07:09 28 % 09:21
Fri, 27-Sep 19:00 19:33 01:58 dawn 06:37 07:10 20 % 10:09
Sat, 28-Sep 18:57 19:31 03:14 dawn 06:38 07:12 13 %
Sun, 29-Sep 18:55 19:28 04:28 dawn 06:40 07:14 7 %
Mon, 30-Sep 18:53 19:26 05:39 dawn 06:42 07:15 3 %
Tue, 01-Oct 18:50 19:24 06:43 07:17 1 %
Wed, 02-Oct 18:48 19:21 06:45 07:19 0 %
Thu, 03-Oct 18:46 19:19 06:47 07:20 1 % 13:30
Fri, 04-Oct 18:43 19:17 06:48 07:22 4 % 14:11
Sat, 05-Oct 18:41 19:15 06:50 07:24 9 % 14:54
Sun, 06-Oct 18:39 19:12 dusk 19:31 06:52 07:25 15 % 15:39
Mon, 07-Oct 18:37 19:10 dusk 19:56 06:53 07:27 23 % 16:29
Tue, 08-Oct 18:34 19:08 dusk 20:34 06:55 07:29 32 % 17:22
Wed, 09-Oct 18:32 19:06 dusk 21:27 06:57 07:30 42 % 18:17
Thu, 10-Oct 18:30 19:04 dusk 22:37 06:58 07:32 52 % 19:14
Fri, 11-Oct 18:28 19:01 dusk 00:00 07:00 07:34 63 % 20:10
Sat, 12-Oct 18:26 18:59 dusk 01:29 07:02 07:36 73 % 21:05
Sun, 13-Oct 18:23 18:57 dusk 02:59 07:03 07:37 83 % 21:57 after dusk
Mon, 14-Oct 18:21 18:55 dusk 04:30 07:05 07:39 91 % 22:49 after dusk
Tue, 15-Oct 18:19 18:53 dusk 06:02 07:07 07:41 97 % 23:40 after dusk

Notes

  • The moon's phase or fracillum (percentage of the moon illuminated) doesn't vary much with location.
  • A full moon is not just bigger, its much brighter. A half moon ('50%') give less than 5% of the illumination of a full moon. You can walk with a half 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
  • Of course, you need a cloudless night as well!

Brecon Beacons weather (Accuweather)

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