Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High for changeable weather to continue into the weekend. Please note we are aware of an issue affecting forecast wind speeds and gusts for higher-elevation sites (typically above 500m) displayed on the Met Office website and app. The winds shown here in our Mountain Area Forecasts are not affected by this. Our teams are actively working to correct the issue and updates will be deployed as soon as possible.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Severe Chill Effect
Wind significantly lowers the ‘feels-like’ temperature relative to the actual temperature, with even moderate winds significantly adding to the chilling effect. Strong winds can result in a severe and debilitating wind chill many degrees below the actual temperature. This effect will be enhanced in rain or wet snow. Without protection, prolonged exposure could result in frost nip or frostbite on exposed parts of the body and/or hypothermia.
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.
Gales
Gale force winds (gusts over 50mph) make walking difficult and strenuous with a potential to be blown over by gusts. There is often a marked increase in winds through cols or on exposed ridges and summits. Distances can take longer to cover and compass bearings become harder to follow accurately.
Mountain weather forecast
Dry and cloudy for most of the day, rain by evening
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 600m) |
|
|
|
|
|
|
Chance of precipitation (at 600m) |
00% | 00% | 00% | 00% | 40% | 80% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
SE
20
|
SE
21
|
SE
23
|
SE
21
|
SE
23
|
SE
22
|
| 300m |
E
8
|
SE
10
|
SE
14
|
SE
12
|
SE
13
|
SE
13
|
| Valley |
E
8
|
E
7
|
SE
12
|
SE
11
|
E
12
|
E
12
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 28 | 30 | 32 | 30 | 33 | 32 |
| 300m | 20 | 24 | 29 | 24 | 27 | 27 |
| Valley | 18 | 19 | 27 | 25 | 26 | 27 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
2°
|
1°
|
2°
|
3°
|
2°
|
2°
|
| 300m |
3°
|
4°
|
5°
|
5°
|
4°
|
4°
|
| Valley |
4°
|
4°
|
6°
|
6°
|
5°
|
5°
|
| Freezing Level |
900m
|
800m
|
900m
|
1,000m
|
1,000m
|
1,100m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-4°
|
-5°
|
-4°
|
-3°
|
-4°
|
-4°
|
| 300m |
0°
|
0°
|
1°
|
2°
|
0°
|
0°
|
| Valley |
0°
|
1°
|
2°
|
3°
|
1°
|
1°
|
Additional weather information
Meteorologist's view
Strong summit winds will lead to significant wind chill at height.
Weather
It will be dry for most the day. Rain, with sleet and higher summit snow, will spread northeast through the evening.
Chance of cloud-free hill tops
60%
Low cloud and visibility
Poor in area of cloud around 400 metres at first. Areas of cloud between 700 and 800 metres during the afternoon and evening shrouding some of the higher tops
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 0mm | 17mm | 28.8mm |
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
Overnight rain clearing by mid-morning. Then it will be dry and somewhat brighter for a few hours before further rain spreads from the southwest from late afternoon lasting into the evening.
Chance of cloud-free hill tops
50%, best chance in the early afternoon
Maximum wind speed expected
Southeasterly 20 mph, strengthening to 30 mph with gusts to 50 mph from late afternoon
Temperature
- At 600m Plus 4 Celsius
- Valley Plus 4 rising to 8 Celsius
- Freezing level Above the summits
Low cloud and visibility
Poor in widespread cloud down to 550 to 800 metres in the morning, this clearing during the early afternoon. Then a short spell of good visibility with only patchy summit cloud, before cloud becomes more extensive down to 700 metres by late afternoon.
Mountain weather information
Sat 31 Jan
Sunrise:
Sunset:
Overcast with rain at times. Strong east or southeast winds.
Sun 1 Feb
Sunrise:
Sunset:
Probably a better chance of drier interludes and cloud breaks, with lighter winds.
Mon 2 Feb
Sunrise:
Sunset:
Increasing chance of cloud and rain later, with strengthening east to southeast winds.
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.