Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High confidence for settled conditions on Thursday. Moderate for timing of rain/showers from Saturday.
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.
Mountain weather forecast
A dry and bright morning, clouding over in the afternoon with some light rain, cold feel in strengthening Southeasterly winds.
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
Weather (at 600m) |
|
|
|
|
|
|
Chance of precipitation (at 600m) |
10% | 10% | 10% | 30% | 20% | 20% |
Wind direction and speed (mph)
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
SE
14
|
SE
20
|
SE
22
|
SE
22
|
SE
25
|
SE
27
|
| 300m |
E
7
|
NE
9
|
E
7
|
SE
9
|
SE
13
|
SE
16
|
| Valley |
E
5
|
E
7
|
E
7
|
N
5
|
E
6
|
SE
5
|
Wind gust (mph)
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m | 17 | 30 | 32 | 34 | 38 | 40 |
| 300m | 13 | 14 | 13 | 21 | 27 | 34 |
| Valley | 11 | 17 | 16 | 9 | 12 | 13 |
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
2°
|
2°
|
2°
|
3°
|
3°
|
4°
|
| 300m |
0°
|
1°
|
3°
|
4°
|
5°
|
6°
|
| Valley |
0°
|
1°
|
4°
|
4°
|
5°
|
6°
|
| Freezing Level |
200m
|
500m
|
600m
|
1,900m
|
2,700m
|
2,700m
|
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
-3°
|
-4°
|
-4°
|
-3°
|
-3°
|
-2°
|
| 300m |
-4°
|
-3°
|
0°
|
1°
|
2°
|
2°
|
| Valley |
-3°
|
-2°
|
1°
|
2°
|
3°
|
4°
|
Additional weather information
Meteorologist's view
Windy conditions will make for fairly arduous walking on exposed terrain with buffeting of clothing. Balance may be affected at times.
Weather
Frost and icy stretches on untreated surfaces. A few mist and fog patches to start the day but otherwise a bright or sunny morning. Cloud thickening during the afternoon with some light rain or drizzle at times around western hills, freshening southeasterly winds adding to the windchill on the hills.
Chance of cloud-free hill tops
70%, patchy low cloud on the hill tops at first, increasing low cloud later.
Low cloud and visibility
Patchy cloud above 700m at the start of the day but otherwise mostly clear hill tops expected. Cloud thickening and lowering during the afternoon with scattered layers above 500m particularly on southern hills. Excellent visibility expected in the morning becoming moderate by late afternoon.
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 0.6mm | 8mm | 13.6mm |
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
Mostly cloudy with some low cloud and drizzle at times particularly around hills further south and west. A few bright or sunny spells developing especially in the east. Cloud will thicken in the afternoon with some light rain expected by late afternoon.
Chance of cloud-free hill tops
40%, more chance further east during the day, near Nil during evening.
Maximum wind speed expected
Southeasterly 35 mph with gusts 40mph at times.
Temperature
- At 600m Plus 6 Celsius.
- Valley Plus 7 rising to plus 10 Celsius.
- Freezing level Above all summits.
Low cloud and visibility
Low cloud layers will be broken above 500m in the west but more scattered around 600m in the east. Cloud will become more extensive later in the afternoon. Visibility will be good for much of the day, turning moderate in any drizzle in the west at times and later in the day as rain arrives.
Mountain weather information
Sat 30 Nov
Sunrise:
Sunset:
Cloudy with a few scattered showers at times, broken low cloud cover expected with some poor visibility at height. Strong southwesterly winds, feeling milder. Freezing level above summits.
Sun 1 Dec
Sunrise:
Sunset:
Showery rain with poor visibility at times and low cloud affecting western hills, strong southerly winds. Freezing level above summits.
Mon 2 Dec
Sunrise:
Sunset:
Showery with west or North-westerly winds, turning colder. Freezing level close to summits later.
Updated at:
Summit specific forecast
Mountain summit forecast map
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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.