Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
Medium for cloud details.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Poor Visibility
Poor visibility presents challenging route finding conditions. Visibility could be significantly less than 50 metres in all directions with few or no visual references, especially on featureless moors or plateaux. Distances become hard to judge and cliff or cornice edges can be difficult to recognise. These conditions require good navigational skills. There is a risk of white-out conditions when mist or fog is combined with extensive snow cover.
Mountain weather forecast
Mainly dry. Cloudy or bright.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 600m) |
|
|
|
|
|
|
Chance of precipitation (at 600m) |
20% | 20% | 20% | 10% | 10% | 10% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
NE
11
|
NE
10
|
E
11
|
E
12
|
E
11
|
SE
12
|
| 300m |
E
4
|
NE
7
|
E
9
|
E
8
|
E
6
|
E
5
|
| Valley |
NE
2
|
E
5
|
E
7
|
E
7
|
E
5
|
E
5
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 18 | 17 | 15 | 16 | 18 | 19 |
| 300m | 12 | 12 | 15 | 13 | 14 | 13 |
| Valley | 9 | 10 | 14 | 12 | 12 | 13 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
4°
|
4°
|
5°
|
6°
|
6°
|
6°
|
| 300m |
6°
|
6°
|
7°
|
8°
|
8°
|
6°
|
| Valley |
6°
|
7°
|
8°
|
9°
|
8°
|
7°
|
| Freezing Level |
1,600m
|
1,500m
|
1,700m
|
1,700m
|
1,800m
|
1,800m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
0°
|
1°
|
1°
|
3°
|
3°
|
3°
|
| 300m |
5°
|
4°
|
5°
|
6°
|
6°
|
5°
|
| Valley |
6°
|
6°
|
6°
|
8°
|
7°
|
6°
|
Additional weather information
Meteorologist's view
Nothing further to add.
Weather
Cloudy but mainly dry overnight with cloud tending to lift. Cloudy or bright during daylight hours, occasional summit cloud, this most likely early and later in the day. Dry for much of the time, but the odd burst of rain possible. Cloudy or partly cloudy in the evening,
Chance of cloud-free hill tops
70%,
Low cloud and visibility
Cloud mainly above the summits, but occasionally lowering to around 500m, mainly early and later in the day. Visibility mostly good or very good but poor or very poor in any cloud.
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 5.8mm | 8.8mm | 10.6mm |
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
Cloudy or partly cloudy overnight and early morning. Any low cloud should lift and break during the day with bright and sunny spells developing. Patchy low cloud and clear spells in the evening.
Chance of cloud-free hill tops
40% overnight rising to 90% during daylight hours.
Maximum wind speed expected
South or Southeast 15 to 20mph.
Temperature
- At 600m Plus 2 Celsius rising to 8 Celsius
- Valley Plus 3 Celsius rising to 14 Celsius
- Freezing level Mainly above the summits.
Low cloud and visibility
Occasional or extensive low cloud, base 300 to 600m overnight and early morning, lifting and breaking above the summits during the day. Visibility poor or very poor in cloud, otherwise good or very good.
Mountain weather information
Thu 5 Mar
Sunrise:
Sunset:
Dry start. Cloudy or bright. Then rain and lowering cloud. Fresh to strong south turning northwest winds at times. Freezing level mostly above the summits, perhaps around the highest summits later.
Fri 6 Mar
Sunrise:
Sunset:
Mainly dry with sunny or clear spells, early frost possible. Moderate or fresh northwest winds with a significant wind chill. Freezing level well down at first, rising above the summits during the day.
Sat 7 Mar
Sunrise:
Sunset:
Low cloud possible at first, but dry and mainly bright with sunny or clear spells. Light or moderate southeast winds. Freezing level mainly near or above the summits, but a frost possible early and late.
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.