Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High for changeable weather to continue for the next few days. Low for precipitation detail on a daily basis.
This evening forecast
Rain will clear away north early this evening to leave mainly dry weather with broken cloud.
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.
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
Cold and windy with morning rain and higher summit wet snow, drier afternoon
| 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) |
20% | 20% | 60% | 60% | 20% | 20% | 70% | 70% |
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 |
S
13
|
SE
18
|
E
22
|
SE
23
|
SE
23
|
SE
23
|
E
26
|
E
27
|
| 300m |
SE
5
|
E
7
|
E
10
|
E
14
|
SE
14
|
E
15
|
E
16
|
E
17
|
| Valley |
SE
4
|
E
8
|
E
11
|
E
13
|
SE
13
|
E
13
|
E
16
|
E
17
|
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 | 18 | 26 | 31 | 34 | 32 | 34 | 38 | 40 |
| 300m | 12 | 15 | 23 | 29 | 28 | 29 | 33 | 35 |
| Valley | 9 | 17 | 25 | 29 | 27 | 28 | 33 | 36 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
2°
|
2°
|
2°
|
2°
|
3°
|
3°
|
3°
|
3°
|
| 300m |
3°
|
3°
|
4°
|
4°
|
6°
|
6°
|
5°
|
5°
|
| Valley |
4°
|
4°
|
5°
|
5°
|
6°
|
7°
|
6°
|
6°
|
| Freezing Level |
900m
|
900m
|
900m
|
900m
|
900m
|
900m
|
900m
|
900m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-2°
|
-4°
|
-4°
|
-4°
|
-3°
|
-3°
|
-4°
|
-4°
|
| 300m |
1°
|
1°
|
0°
|
0°
|
2°
|
2°
|
1°
|
0°
|
| Valley |
2°
|
1°
|
1°
|
1°
|
3°
|
3°
|
2°
|
1°
|
Additional weather information
Meteorologist's view
Strong winds on the higher summits will make for slow progress and marked wind chill.
Weather
Largely dry in the early hours. Widespread rain will move north for a few hours soon after dawn, clearing by late morning. Then drier in the afternoon with the odd shower. Further rain will spread north through the evening. Some sleet or wet snow can be expected above 900 metres.
Chance of cloud-free hill tops
50%, best chance in the afternoon
Low cloud and visibility
Poor in widespread cloud down to 700 metres in rain, otherwise good visibility with patchy cloud above 850 metres
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 10.8mm | 26.2mm | 34.2mm |
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
Overcast and windy with spells of rain, occasionally heavy.
Chance of cloud-free hill tops
50%
Maximum wind speed expected
Southeasterly average speeds 30 mph with gusts to 50 mph
Temperature
- At 600m Plus 4 Celsius
- Valley Plus 5 rising to 7 Celsius
- Freezing level Above the summits
Low cloud and visibility
Poor in areas of hill fog down to 700 metres, lowest bases across the east of the Park
Mountain weather information
Sun 25 Jan
Sunrise:
Sunset:
Chance of some rain in the morning, followed by a few showers in the afternoon.
Mon 26 Jan
Sunrise:
Sunset:
Starting off dry but rain is likely to spread northeast for a time in the afternoon.
Tue 27 Jan
Sunrise:
Sunset:
Little change, remaining unsettled with further spells of rain.
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.