Picws Du, from Fan Foel

SWC Walk 86 Fan Brycheiniog and Fan Foel (The Black Mountain)

11-Oct-16 • thomasgrabow on Flickr

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Fan Fechan Moraine at bottom of Fan Hir Escarpment

SWC Walk 86 Fan Brycheiniog and Fan Foel (The Black Mountain)

11-Oct-16 • thomasgrabow on Flickr

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Northerly Views from Fan Hir towards Glasfynydd Forest

SWC Walk 86 Fan Brycheiniog and Fan Foel (The Black Mountain)

11-Oct-16 • thomasgrabow on Flickr

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Wild Hill Ponies (on Cefn Disgwylfa) [off-route]

SWC Walk 86 Fan Brycheiniog and Fan Foel (The Black Mountain)

11-Oct-16 • thomasgrabow on Flickr

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Fan Gyhirych in the Evening Sun

SWC Walk 86 Fan Brycheiniog and Fan Foel (The Black Mountain)

12-Oct-16 • thomasgrabow on Flickr

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Fan Gyhirych, from ascent up Allt Fach

SWC Walk 86 Fan Brycheiniog and Fan Foel (The Black Mountain)

11-Oct-16 • thomasgrabow on Flickr

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Fan Hir Ridge in clouds

SWC Walk 86 Fan Brycheiniog and Fan Foel (The Black Mountain)

11-Oct-16 • thomasgrabow on Flickr

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Black Mountain (Fan Brycheiniog and Fan Foel) from Glyntawe walk

A strenous start then easy route finding along a glacial ridge through wild upland scenery to one of the highest peaks in the Brecon Beacons National Park with spectacular views.

Hiking Weather

7 Day Forecast for Brecon Beacons NP

Sunset: 16:54. Dusk: 17:31. Moon: 12% (dusk to 20:44)

8 9 10 11 12 13 14 15 16 17 18 19 20
Tue, 28-Jan 7% 12% 15% 24% 30% 28% 27% 24% 24% 24% 17% 10% 9%
Wed, 29-Jan 9% 9% 0% 0% 0% 0% 12% 16% 17% 16% 13% 11% 11%
Thu, 30-Jan 7% 5% 5% 7% 7% 8% 11% 12% 12% 7% 6% 6% 5%
Fri, 31-Jan 19% 23% 26% 34% 39% 28% 22% 21% 19% 16% 11% 5% 4%
Sat, 01-Feb 12% 16% 17% 19% 21% 22% 24% 30% 35% 37% 56% 61% 56%
Sun, 02-Feb 48% 50% 45% 32% 22% 19% 18% 15% 13% 13% 11% 8% 5%
Mon, 03-Feb 50% 46% 41% 40% 40% 37% 32% 30% 27% 25% 20% 22% 27%
Tue, 04-Feb

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Met Office Forecast

Wales

Cold and showery, with some brighter spells possible.

Today:

A windy day with bright spells and some showers likely throughout. These showers could fall as snow over higher ground, with hail possible at times. Feeling cold, especially in the wind. Maximum Temperature 7C.

Tonight:

Any showers will continue into the evening, but the majority of the night will be clear which will lead to a dip in temperatures with ice and frost patches forming. Minimum Temperature 0C.

Wednesday:

A potentially icy start, with clear skies through the morning. During the afternoon, cloud will thicken bringing a few showers, especially over the hills. Remaining breezy and still feeling chilly. Maximum Temperature 9C.

Outlook for Thursday to Saturday:

Breezy throughout and often cloudy with occasional spells of rain at times. Gradually turning milder.

Day 6-7 and Week 2:

Often windy with outbreaks of rain and showers for all areas at the start of this period, with temperatures on the mild side of the seasonal average. As we head through the first full week of February it currently looks most likely that we will see a gradual trend towards more settled conditions, particularly in the south, and there is a chance that these will extend across the whole country at times. Overnight fog and frosts are likely to accompany these more settled conditions, with light winds and temperatures probably nearer to the average for the time of year. The far north, and particularly north-west, will probably remain more changeable, or unsettled, with further spells of wind and rain.

Week 3 and 4:

The first part of the period is likely to trend to more anticyclonic conditions, with the associated drier and more settled weather intially in the southeast, spreading northwestwards and beginning to dominate. The north will continue to be at risk from outbreaks of rain and stronger winds at times. Overnight frosts and fog will be likely, which could be persistent at times. Temperatures around normal, and sometimes a little above. There could be large variations between night time and day time temperatures in the more settled spells, especially on the sunnier days.

Met Office : Wales : 2020-01-28T02:41:17

Daylight : Brecon Beacons NP

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

Data: US Navy Observatory

Moonlight : Brecon Beacons NP

Date Sunset Dusk Moon Rise Moon Set Dawn Sunrise % Full Max. Ht. Night Walk
Tue, 28-Jan 16:54 17:31 dusk 20:44 07:22 07:59 12% 15:15
Wed, 29-Jan 16:56 17:33 dusk 21:51 07:20 07:57 19% 15:56
Thu, 30-Jan 16:57 17:34 dusk 22:57 07:19 07:56 27% 16:37
Fri, 31-Jan 16:59 17:36 dusk 00:04 07:18 07:54 35% 17:17
Sat, 01-Feb 17:01 17:38 dusk 01:11 07:16 07:53 45% 17:59
Sun, 02-Feb 17:03 17:39 dusk 02:21 07:15 07:51 50% 18:44
Mon, 03-Feb 17:05 17:41 dusk 03:32 07:13 07:49 64% 19:31
Tue, 04-Feb 17:07 17:43 dusk 04:42 07:12 07:48 73% 20:22
Wed, 05-Feb 17:08 17:45 dusk 05:48 07:10 07:46 82% 21:17 after dusk
Thu, 06-Feb 17:10 17:46 dusk 06:45 07:09 07:44 90% 22:15 after dusk
Fri, 07-Feb 17:12 17:48 dusk dawn 07:07 07:43 95% 23:15 all night
Sat, 08-Feb 17:14 17:50 dusk dawn 07:05 07:41 99% 00:15 all night
Sun, 09-Feb 17:16 17:51 dusk dawn 07:04 07:39 100% 01:14 all night
Mon, 10-Feb 17:18 17:53 18:56 dawn 07:02 07:37 98% 02:09 before dawn
Tue, 11-Feb 17:20 17:55 20:22 dawn 07:00 07:35 93% 03:03 before dawn
Wed, 12-Feb 17:21 17:57 21:47 dawn 06:58 07:33 86% 03:55 before dawn
Thu, 13-Feb 17:23 17:58 23:11 dawn 06:57 07:32 76% 04:47 before dawn
Fri, 14-Feb 17:25 18:00 00:32 dawn 06:55 07:30 66% 05:38
Sat, 15-Feb 17:27 18:02 01:52 dawn 06:53 07:28 50% 06:30
Sun, 16-Feb 17:29 18:04 03:07 dawn 06:51 07:26 44% 07:24
Mon, 17-Feb 17:31 18:05 04:17 dawn 06:49 07:24 33% 08:17
Tue, 18-Feb 17:33 18:07 05:17 dawn 06:47 07:22 24% 09:11
Wed, 19-Feb 17:34 18:09 06:06 dawn 06:45 07:20 16% 10:04
Thu, 20-Feb 17:36 18:11 06:43 07:18 9%
Fri, 21-Feb 17:38 18:12 06:41 07:16 4%
Sat, 22-Feb 17:40 18:14 06:39 07:13 1%
Sun, 23-Feb 17:42 18:16 06:37 07:11 0%
Mon, 24-Feb 17:44 18:18 dusk 18:33 06:35 07:09 1% 13:12
Tue, 25-Feb 17:45 18:19 dusk 19:40 06:33 07:07 3% 13:53
Wed, 26-Feb 17:47 18:21 dusk 20:46 06:31 07:05 7% 14:34
Thu, 27-Feb 17:49 18:23 dusk 21:52 06:29 07:03 13% 15:15
Fri, 28-Feb 17:51 18:25 dusk 22:59 06:27 07:01 20% 15:56
Sat, 29-Feb 17:53 18:26 dusk 00:07 06:25 06:59 28% 16:39
Sun, 01-Mar 17:54 18:28 dusk 01:16 06:23 06:56 37% 17:24
Mon, 02-Mar 17:56 18:30 dusk 02:25 06:21 06:54 50% 18:12
Tue, 03-Mar 17:58 18:32 dusk 03:31 06:18 06:52 57% 19:04
Wed, 04-Mar 18:00 18:33 dusk 04:31 06:16 06:50 67% 19:59
Thu, 05-Mar 18:01 18:35 dusk 05:23 06:14 06:48 77% 20:57 after dusk
Fri, 06-Mar 18:03 18:37 dusk 06:04 06:12 06:45 85% 21:56 after dusk
Sat, 07-Mar 18:05 18:39 dusk dawn 06:10 06:43 93% 22:54 all night
Sun, 08-Mar 18:07 18:40 dusk dawn 06:07 06:41 98% 23:52 all night
Mon, 09-Mar 18:09 18:42 dusk dawn 06:05 06:39 100% 00:47 all night
Tue, 10-Mar 18:10 18:44 19:17 dawn 06:03 06:36 99% 01:42 before dawn
Wed, 11-Mar 18:12 18:46 20:45 dawn 06:01 06:34 95% 02:35 before dawn
Thu, 12-Mar 18:14 18:47 22:11 dawn 05:58 06:32 89% 03:29 before dawn
Fri, 13-Mar 18:16 18:49 23:35 dawn 05:56 06:29 80% 04:23 before dawn
Sat, 14-Mar 18:17 18:51 00:55 dawn 05:54 06:27 70% 05:17
Sun, 15-Mar 18:19 18:53 02:09 dawn 05:51 06:25 60% 06:12
Mon, 16-Mar 18:21 18:54 03:14 dawn 05:49 06:22 50% 07:07
Tue, 17-Mar 18:22 18:56 04:06 dawn 05:47 06:20 39% 08:00
Wed, 18-Mar 18:24 18:58 04:48 dawn 05:44 06:18 29% 08:52
Thu, 19-Mar 18:26 19:00 05:21 dawn 05:42 06:16 21% 09:40
Fri, 20-Mar 18:28 19:01 05:40 06:13 13%
Sat, 21-Mar 18:29 19:03 05:37 06:11 8%
Sun, 22-Mar 18:31 19:05 05:35 06:09 3%
Mon, 23-Mar 18:33 19:07 05:33 06:06 1%
Tue, 24-Mar 18:35 19:08 05:30 06:04 0%
Wed, 25-Mar 18:36 19:10 dusk 19:43 05:28 06:02 1% 13:13
Thu, 26-Mar 18:38 19:12 dusk 20:50 05:26 05:59 4% 13:54
Fri, 27-Mar 18:40 19:14 dusk 21:58 05:23 05:57 9% 14:37
Sat, 28-Mar 18:41 19:15 dusk 00:07 06:21 06:55 15% 15:21
Sun, 29-Mar 19:43 20:17 dusk 01:15 06:18 06:53 22% 17:07
Mon, 30-Mar 19:45 20:19 dusk 02:22 06:16 06:50 30% 17:57
Tue, 31-Mar 19:46 20:21 dusk 03:23 06:14 06:48 40% 18:50
Wed, 01-Apr 19:48 20:23 dusk 04:16 06:11 06:46 50% 19:45
Thu, 02-Apr 19:50 20:24 dusk 05:00 06:09 06:43 61% 20:41
Fri, 03-Apr 19:52 20:26 dusk 05:35 06:07 06:41 72% 21:38
Sat, 04-Apr 19:53 20:28 dusk 06:03 06:04 06:39 81% 22:34 after dusk
Sun, 05-Apr 19:55 20:30 dusk dawn 06:02 06:37 89% 23:30 all night
Mon, 06-Apr 19:57 20:32 dusk dawn 06:00 06:34 96% 00:24 all night
Tue, 07-Apr 19:58 20:33 dusk dawn 05:57 06:32 99% 01:18 all night
Wed, 08-Apr 20:00 20:35 20:38 dawn 05:55 06:30 100% 02:12 before dawn
Thu, 09-Apr 20:02 20:37 22:06 dawn 05:52 06:28 97% 03:08 before dawn
Fri, 10-Apr 20:03 20:39 23:32 dawn 05:50 06:25 92% 04:04 before dawn
Sat, 11-Apr 20:05 20:41 00:53 dawn 05:48 06:23 84% 05:01 before dawn
Sun, 12-Apr 20:07 20:42 02:04 dawn 05:45 06:21 75% 05:58 before dawn
Mon, 13-Apr 20:09 20:44 03:03 dawn 05:43 06:19 65% 06:54
Tue, 14-Apr 20:10 20:46 03:50 dawn 05:41 06:17 50% 07:47
Wed, 15-Apr 20:12 20:48 04:25 dawn 05:38 06:14 45% 08:38
Thu, 16-Apr 20:14 20:50 04:53 dawn 05:36 06:12 35% 09:25
Fri, 17-Apr 20:15 20:52 05:15 dawn 05:34 06:10 26% 10:09
Sat, 18-Apr 20:17 20:54 05:32 06:08 18%
Sun, 19-Apr 20:19 20:55 05:29 06:06 12%
Mon, 20-Apr 20:20 20:57 05:27 06:04 6%
Tue, 21-Apr 20:22 20:59 05:25 06:02 3%
Wed, 22-Apr 20:24 21:01 05:22 06:00 1%
Thu, 23-Apr 20:26 21:03 05:20 05:58 0%
Fri, 24-Apr 20:27 21:05 dusk 21:58 05:18 05:56 2% 14:19
Sat, 25-Apr 20:29 21:07 dusk 23:08 05:16 05:54 5% 15:05
Sun, 26-Apr 20:31 21:09 dusk 00:16 05:14 05:52 10% 15:54
Mon, 27-Apr 20:32 21:10 dusk 01:19 05:11 05:50 17% 16:46
Tue, 28-Apr 20:34 21:12 dusk 02:14 05:09 05:48 26% 17:39
Wed, 29-Apr 20:36 21:14 dusk 03:00 05:07 05:46 35% 18:34
Thu, 30-Apr 20:37 21:16 dusk 03:37 05:05 05:44 50% 19:30
Fri, 01-May 20:39 21:18 dusk 04:06 05:03 05:42 57% 20:24
Sat, 02-May 20:41 21:20 dusk 04:30 05:01 05:40 68% 21:18
Sun, 03-May 20:42 21:22 dusk 04:52 04:59 05:38 78% 22:10 after dusk
Mon, 04-May 20:44 21:24 dusk dawn 04:57 05:36 87% 23:03 all night
Tue, 05-May 20:46 21:25 dusk dawn 04:55 05:35 94% 23:56 all night
Wed, 06-May 20:47 21:27 dusk dawn 04:53 05:33 98% 00:50 all night
Thu, 07-May 20:49 21:29 dusk dawn 04:51 05:31 100% 01:46 all night
Fri, 08-May 20:50 21:31 22:25 dawn 04:49 05:29 98% 02:44 before dawn
Sat, 09-May 20:52 21:33 23:44 dawn 04:47 05:28 94% 03:43 before dawn
Sun, 10-May 20:54 21:35 00:52 dawn 04:45 05:26 88% 04:41 before dawn
Mon, 11-May 20:55 21:37 01:45 dawn 04:43 05:25 80% 05:38 before dawn
Tue, 12-May 20:57 21:38 02:26 dawn 04:41 05:23 71% 06:31
Wed, 13-May 20:58 21:40 02:57 dawn 04:40 05:21 61% 07:20
Thu, 14-May 21:00 21:42 03:21 dawn 04:38 05:20 50% 08:06
Fri, 15-May 21:01 21:44 03:41 dawn 04:36 05:18 42% 08:49
Sat, 16-May 21:03 21:46 03:57 dawn 04:34 05:17 32% 09:31
Sun, 17-May 21:04 21:47 04:13 dawn 04:33 05:16 24% 10:11
Mon, 18-May 21:06 21:49 04:28 dawn 04:31 05:14 16% 10:52
Tue, 19-May 21:07 21:51 04:29 05:13 10%
Wed, 20-May 21:09 21:52 04:28 05:12 5%
Thu, 21-May 21:10 21:54 04:26 05:10 2%
Fri, 22-May 21:12 21:56 04:25 05:09 0%
Sat, 23-May 21:13 21:57 dusk 22:07 04:24 05:08 1% 13:50
Sun, 24-May 21:14 21:59 dusk 23:13 04:22 05:07 3% 14:42
Mon, 25-May 21:16 22:00 dusk 00:12 04:21 05:06 7% 15:35
Tue, 26-May 21:17 22:02 dusk 01:01 04:20 05:05 14% 16:30

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, and, (ii) if there are hills on the horizon.
  • Of course, you need a cloudless night as well!
  • Data: US Navy Observatory

Met Office Mountain Forecast

Issued: 0600 on 2020-01-28 for Brecon Beacons

Today

Frequent showers, and cold. Snow above 300m at first, but snowline gradually rising to 500m through the day.

Summary Cold with strong winds and occasional showers moving in from the west. These falling as snow above 300m at first, but snow becoming increasingly limited to above 500m through the day. Some brighter spells likely, mainly in the east during the afternoon.
Chance of Cloud free tops 40%, with cloud often down to 600m, but 400m at times in showers. Best chance in the east in the afternoon, around 70%, with fewer showers.
Ground conditions
Visibility Away from showers, some very good views are possible, especially in the east during the afternoon. However, any showers will lead to some significant deterioration, and when coupled with the wind, visibility is likely to fall to near zero in snowfall at height with a chance of blizzard conditions developing.
Blizzards: Low Likelihood
Gales: Low Likelihood
Severe Chill Effect: Medium Likelihood
Poor Visibility: Medium Likelihood
Thunderstorms: Low Likelihood
Strong Sunlight: Low Likelihood
060708 091011 121314 151617 181920 212223
Weather Light snow Light snow Light snow Light snow Light snow Light snow
Rain 40% 30% 30% 30% 30% 30%
Temp (tops) -1 -1 0 0 0 0
Wind (tops) 23 23 26 25 22 26
Freezing Level 300m 400m 500m 500m 500m 500m
Day 1

Showers will continue overnight and during the morning, but increasingly light and less frequent, with sunny spells becoming prolonged. The snowline also gradually rising to be above the summits by the afternoon. Thickening cloud will then descend onto the slopes, with drizzle possible west and a widespread thaw of lying snow occurring. Some sunny spells will remain likely in the east.

Ice 500m overnight, then rising to be above the tops by afternoon
Visibility Good views likely during the morning, but still falling to poor or very poor at times during showers. Visibility becoming moderate to poor as cloud and outbreaks drizzle descend onto the hills during the afternoon.
Wind Westerly 25 mph gusting 40-45mph
Temp Minus 1 Celsius rising to Plus 4 Celsius (at high level)
Day 2

Cloudy and damp at first with low cloud, extensive on western slopes and outbreaks of rain or drizzle. Drier in the afternoon, but still cloudy. Strong westerly winds easing and freezing levels above the tops

Day 3

Mostly dry and bright start, but mostly cloudy with strong southwest winds and rain or showers by the afternoon, these occasionally heavy. Freezing level will be well above the tops.

Day 4

Heavy rain and strong winds at first, clearing by the afternoon, with sunny spells and blustery showers following. Freezing levels likely remaining above the tops.

Data: Met Office