Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
A changeable week with significant temperature variation. High for general developments. Medium for cloud details.
This evening forecast
Patchy light rain dying out with clearing skies. Moderate north or northeast winds at height. Lowering freezing level.
Mountain weather forecast
Dry and bright.
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
Weather (at 600m) |
|
|
|
|
|
|
|
|
Chance of precipitation (at 600m) |
00% | 00% | 00% | 00% | 00% | 00% | <05% | 20% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
N
12
|
NE
8
|
NE
7
|
S
3
|
SW
9
|
SW
12
|
SW
12
|
SW
16
|
| 300m |
NE
4
|
NE
3
|
E
2
|
E
3
|
SW
7
|
SW
9
|
SW
7
|
SW
8
|
| Valley |
N
2
|
NE
2
|
E
1
|
E
3
|
SW
5
|
SW
8
|
SW
5
|
SW
6
|
Wind gust (mph)
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m | 16 | 13 | 11 | 6 | 12 | 16 | 16 | 23 |
| 300m | 11 | 8 | 6 | 5 | 11 | 16 | 15 | 20 |
| Valley | 9 | 6 | 5 | 5 | 9 | 14 | 13 | 17 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
5°
|
4°
|
3°
|
5°
|
7°
|
8°
|
7°
|
5°
|
| 300m |
6°
|
4°
|
3°
|
6°
|
11°
|
12°
|
9°
|
7°
|
| Valley |
7°
|
5°
|
3°
|
7°
|
12°
|
13°
|
10°
|
8°
|
| Freezing Level |
1,600m
|
1,500m
|
1,400m
|
1,300m
|
1,300m
|
1,400m
|
1,300m
|
1,300m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
1°
|
1°
|
0°
|
4°
|
5°
|
6°
|
4°
|
1°
|
| 300m |
5°
|
3°
|
2°
|
6°
|
10°
|
10°
|
8°
|
5°
|
| Valley |
6°
|
4°
|
2°
|
7°
|
11°
|
11°
|
9°
|
6°
|
Additional weather information
Meteorologist's view
Early frost possible in the valleys.
Weather
Dry with clear spells overnight, perhaps some mist or freezing fog in the valleys by dawn. Any mist or freezing fog clearing during the morning and staying dry and bright for much of the day, although some high level cloud at times. Some patchy light rain possible by evening with lowering cloud.
Chance of cloud-free hill tops
90% or more becoming 60% in the evening.
Low cloud and visibility
Generally no significant low cloud, but could form around the summits in the evening. Visibility mostly very good or excellent, except in any early valley mist and fog, and any summit cloud later in the evening.
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 0mm | 0mm | 0mm |
Measurement date:
Rainfall data provided by Natural Resources Wales. The Met Office is not responsible for content provided by third parties and may remove this data without warning.
Mountain weather information
Weather
Cloud thickening and lowering overnight with patchy light rain possible. Remaining cloudy during daylight hours with outbreaks of rain, the rain heavy and persistent at times during the afternoon and evening. Strong to gale force summit winds and buffeting.
Chance of cloud-free hill tops
40%
Maximum wind speed expected
Southwest 30 to 40mph gusting 50mph.
Temperature
- At 600m Plus 4 to 6 Celsius, falling to Plus 2 Celsius later.
- Valley Plus 6 to 12 Celsius
- Freezing level Above the summits.
Low cloud and visibility
Extensive low cloud much of daylight hours, base 600m, occasional or patches down to 300m. Visibility often moderate to very poor.
Mountain weather information
Wed 25 Mar
Sunrise:
Sunset:
Cloudy or bright with wintry showers. Strong to gale force west or northwest winds at height with a severe wind chill. Freezing level 300 to 600m.
Thu 26 Mar
Sunrise:
Sunset:
Mainly dry with sunny or clear spells with an early frost. Fresh northwest winds at height with a significant wind chill. Freezing most levels at first, rising near or above the summits during the day. Patchy rain possible later.
Fri 27 Mar
Sunrise:
Sunset:
Overnight rain, with summit snow possible at first. Rain continuing during the morning with drier and brighter spells developing through the afternoon. Southwest becoming northwest winds, fresh to strong at times. Freezing level near or above the summits.
Updated at:
Summit specific forecast
Mountain summit forecast map
Loading map…
Key
Mountain summits
Other points of interest
Cluster of multiple stations
The Bannau Brycheiniog / Brecon Beacons is a mountain range in South Wales comprising six main peaks, with the highest peak, Pen y Fan, standing at 886 metres.