Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High for Sunday. High for changeable weather to continue into next week.
This evening forecast
Dry and cloudy with strengthening southerly winds.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Gales
Poor Visibility
Storm Force Winds
Severe Chill Effect
Heavy Persistent Rain
Mountain weather forecast
Very windy with rain at times
| 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% | 30% | 50% | 60% | 60% | 60% | 60% | 60% |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
S
22
|
S
27
|
S
34
|
S
34
|
S
34
|
S
30
|
S
34
|
SW
33
|
| 300m |
S
9
|
S
14
|
S
18
|
S
20
|
S
20
|
S
17
|
S
20
|
SW
19
|
| Valley |
E
3
|
SE
7
|
S
11
|
S
17
|
S
16
|
S
15
|
S
17
|
SW
15
|
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m | 29 | 37 | 46 | 47 | 47 | 40 | 46 | 47 |
| 300m | 20 | 30 | 37 | 42 | 41 | 35 | 40 | 39 |
| Valley | 7 | 20 | 30 | 39 | 38 | 34 | 39 | 35 |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
0°
|
0°
|
1°
|
2°
|
4°
|
6°
|
7°
|
7°
|
| 300m |
1°
|
2°
|
3°
|
4°
|
6°
|
8°
|
9°
|
9°
|
| Valley |
1°
|
2°
|
4°
|
5°
|
7°
|
8°
|
10°
|
10°
|
| Freezing Level |
500m
|
600m
|
1,000m
|
2,100m
|
2,300m
|
2,100m
|
2,000m
|
1,600m
|
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-8°
|
-8°
|
-7°
|
-5°
|
-3°
|
0°
|
2°
|
1°
|
| 300m |
-2°
|
-3°
|
-3°
|
-1°
|
1°
|
4°
|
5°
|
5°
|
| Valley |
-1°
|
-1°
|
0°
|
0°
|
3°
|
5°
|
6°
|
7°
|
Additional weather information
Meteorologist's view
Strong winds across all upland areas will make for slow progress, and combined with rain will lead to drenching and chilling conditions.
Weather
Rain, briefly preceded by snow, will spread northeast during the early hours. Then the rest of the day will be overcast with spells of rain, heavy at times.
Chance of cloud-free hill tops
Little chance
Low cloud and visibility
Widely poor in cloud down to 400 to 700 metres throughout the day shrouding the summits
Recent rainfall
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 1.4mm | 10.4mm | 14.2mm |
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
Rather cloudy skies throughout with occasional showers or longer spells of rain. Remaining windy with summit southwesterly gales. Making progress will be slow in the strong winds.
Chance of cloud-free hill tops
40%
Maximum wind speed expected
Southwesterly average speeds of 30 mph with gusts to 50 mph on the summits.
Temperature
- At 600m Plus 6 Celsius
- Valley Plus 5 rising to 8 Celsius
- Freezing level Above the summits
Low cloud and visibility
Poor in areas of cloud down to 400 to 700 metres, this most extensive across the south of the Park. Otherwise good visibility patchy cloud above 800 metres.
Mountain weather information
Tue 13 Jan
The morning will be cloudy with rain. Drier and eventually clearer weather will spread from the northwest during the afternoon.
Wed 14 Jan
After a dry start outbreaks of rain will extend north during the afternoon along with strengthening south or southwesterly winds.
Thu 15 Jan
Some rain first followed by brighter skies and a few showers.
Summit specific forecast
Mountain summit forecast map
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.