Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High confidence for a lot of fine weather next few days. Some uncertainty about cloud amounts, though some very warm sunshine possible Tuesday and Wednesday. Moderate confidence for the timing of a rain band clearing through early on Thursday, introducing cooler more changeable conditions later in the week.
This evening forecast
Dry with some sunshine to end the day, and clear spells at times through the evening. A gentle breeze.
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
Early patchy frost. Becoming sunny. Breezy.
| 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) |
<05% | <05% | 10% | <05% | 00% | 00% | 00% | 00% |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
SW
10
|
S
10
|
S
13
|
S
19
|
S
19
|
S
20
|
SE
19
|
SE
17
|
| 300m |
SW
5
|
S
5
|
SE
4
|
S
9
|
S
11
|
S
11
|
SE
6
|
SE
6
|
| Valley |
SW
3
|
SW
2
|
E
2
|
SE
8
|
S
10
|
S
10
|
E
6
|
E
6
|
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m | 16 | 14 | 20 | 25 | 25 | 26 | 28 | 28 |
| 300m | 15 | 12 | 14 | 19 | 21 | 21 | 15 | 17 |
| Valley | 13 | 8 | 10 | 17 | 20 | 20 | 12 | 14 |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
2°
|
2°
|
2°
|
4°
|
7°
|
8°
|
8°
|
6°
|
| 300m |
3°
|
2°
|
2°
|
7°
|
10°
|
12°
|
10°
|
7°
|
| Valley |
3°
|
2°
|
1°
|
8°
|
11°
|
13°
|
11°
|
7°
|
| Freezing Level |
800m
|
900m
|
900m
|
1,000m
|
1,200m
|
1,600m
|
1,600m
|
2,000m
|
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
-2°
|
-2°
|
-3°
|
-1°
|
2°
|
5°
|
4°
|
2°
|
| 300m |
1°
|
0°
|
0°
|
5°
|
8°
|
10°
|
9°
|
5°
|
| Valley |
2°
|
0°
|
0°
|
6°
|
9°
|
11°
|
10°
|
5°
|
Additional weather information
Meteorologist's view
Any early mist/fog patches will give difficult conditions for navigating. It will be cold and often breezy near the hill tops too, so warm clothing is advised.
Weather
Dry. A cold start with a patchy frost. Areas of cloud during the morning, with a chance of the odd mist or fog patch first thing. Skies clearing heading into the afternoon and for the evening, giving increasingly sunny/clear conditions. Breezy at times, especially on the hill tops.
Chance of cloud-free hill tops
80% or more.
Low cloud and visibility
Poor visibility at first should any mist/fog patches develop briefly, otherwise good to very good visibility, becoming excellent at times.
Recent rainfall
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 5mm | 6.2mm | 13.6mm |
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
Dry and sunny, though a bit chilly at first. Cloud gradually increasing during the day, though much of it medium or high level cloud, so sunshine just turning hazy. Breezy in the morning, and fairly windy near the hill tops, though southeasterly winds gradually easing. Becoming very warm in the sunshine.
Chance of cloud-free hill tops
80% or more.
Maximum wind speed expected
Southeasterly 25 to 30mph with gusts 35 to 40mph, slowly easing, to become a light breeze later.
Temperature
- At 600m PS04C rising to PS15C.
- Valley PS06C rising to PS20C.
- Freezing level Above the summits throughout.
Low cloud and visibility
Low cloud not expected, with visibility mostly very good.
Mountain weather information
Wed 8 Apr
Mostly dry. Bright or sunny spells, and becoming warm again when the sun appears. Cloud slowly thickening later, with some fog developing on hill tops and rain arriving overnight reducing visibility. Light winds, freshening overnight. Freezing levels above summits throughout.
Thu 9 Apr
Early rain clearing to a colder, brighter but rather windy day with sunshine and showers. Freezing levels lowering to around 700 metres, with some of the showers turning wintry near the hill tops.
Fri 10 Apr
Mainly dry with some bright spells, though becoming breezy, and fairly windy over high ground. Freezing levels climbing back above the hill tops.
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.