Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High for unsettled, but lowering for detail of intensity and timing of worst of the weather.
This evening forecast
Area of rain extending from the west, occasionally turning heavy late evening. Strong to gale south to southwest summit winds. Freezing level above all peaks.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Poor Visibility
Strong Sunlight
Mountain weather forecast
Rather cloudy with showers and longer periods of rain. Strong to gale winds gradually easing. Freezing level above summits.
00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
---|---|---|---|---|---|---|---|---|
Weather (at 600m) |
||||||||
Chance of precipitation (at 600m) |
90% | 60% | 30% | 30% | 20% | 20% | 20% | 60% |
00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
---|---|---|---|---|---|---|---|---|
600m |
S
27
|
SW
25
|
SW
23
|
SW
17
|
SW
14
|
SW
11
|
SW
7
|
S
5
|
300m |
SW
16
|
SW
15
|
SW
13
|
SW
11
|
SW
9
|
SW
8
|
SW
4
|
S
2
|
Valley |
SW
14
|
SW
13
|
SW
12
|
SW
10
|
SW
9
|
SW
7
|
SW
3
|
S
1
|
00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
---|---|---|---|---|---|---|---|---|
600m | 35 | 34 | 31 | 23 | 19 | 15 | 10 | 7 |
300m | 33 | 30 | 27 | 22 | 18 | 15 | 9 | 5 |
Valley | 32 | 29 | 27 | 20 | 17 | 15 | 8 | 5 |
00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
---|---|---|---|---|---|---|---|---|
600m |
6°
|
8°
|
7°
|
8°
|
8°
|
9°
|
8°
|
7°
|
300m |
8°
|
9°
|
9°
|
10°
|
12°
|
12°
|
10°
|
8°
|
Valley |
9°
|
9°
|
10°
|
11°
|
12°
|
12°
|
10°
|
9°
|
Freezing Level |
2,100m
|
1,800m
|
1,700m
|
1,600m
|
1,500m
|
1,600m
|
1,400m
|
1,800m
|
00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
---|---|---|---|---|---|---|---|---|
600m |
1°
|
3°
|
3°
|
4°
|
5°
|
6°
|
6°
|
5°
|
300m |
5°
|
6°
|
6°
|
8°
|
10°
|
10°
|
9°
|
8°
|
Valley |
6°
|
7°
|
7°
|
9°
|
11°
|
11°
|
10°
|
8°
|
Additional weather information
Meteorologist's view
Nothing to add.
Weather
A rather cloudy day with showers occasionally merging to longer periods of rain. Outbreaks most persistent and heavy overnight and again during the evening with best chance of limited brighter spells across the east of the Park.
Chance of cloud-free hill tops
30-40%
Low cloud and visibility
Good becoming moderate or poor in rain, very poor within cloud with bases quite extensive from 600m, probably more broken in the east and during the morning.
Recent rainfall
Last 24 hours | Last 48 hours | Last 72 hours |
---|---|---|
3.2mm | 23mm | 24.2mm |
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
Overcast with periods of rain turning heavy at times, perhaps some drier, brighter conditions developing late afternoon.
Chance of cloud-free hill tops
10-20%
Maximum wind speed expected
Southwest 20mph easing variable 15mph or less by late morning.
Temperature
- At 600m Plus 7 Celsius
- Valley Plus 7 Celsius increasing 17 Celsius for the afternoon
- Freezing level Above all peaks
Low cloud and visibility
Good becoming moderate or poor in rain, very poor within cloud with bases quite extensive from 600m, perhaps lifting and breaking late in the day.
Mountain weather information
Thu 21 Mar
Mainly dry, occasionally bright start, then rain developing for the afternoon. Southwest summit winds strong. Freezing level above all peaks.
Fri 22 Mar
Fresh to strong showery westerly flow. Outbreaks occasional, with some heavy and perhaps wintry across highest tops as the freezing level lowers to 800m.
Sat 23 Mar
Showery west to northwest flow strong initially, easing a little later in the day. Outbreaks occasional with some heavy and occasionally wintry across highest tops with freezing level around 800m.
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.