Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High confidence in dry and warm conditions through Monday. Shower detail becomes increasingly uncertain from Tuesday, with details concerning a low in the North Sea reducing forecast confidence. Confidence remains high for temperatures remaining just above average for the time of year.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Strong Sunlight
Harmful UV levels from sunlight increase with altitude giving a greater risk of sunburn and eye damage, even on some overcast days. On breezy days, the cooling effect of wind on exposed skin may disguise any feeling of sunburn until it is too late. If there is snow cover, glare increases the effect of UV rays especially on the eyes. It is advisable to wear sun block, protective clothing such as a long-sleeved top and hat and have good quality eye protection.
Mountain weather forecast
Dry with plenty of warm sunshine.
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
Weather (at 600m) |
|
|
|
|
|
|
Chance of precipitation (at 600m) |
00% | 00% | 00% | <05% | <05% | 00% |
Wind direction and speed (mph)
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
NE
10
|
NE
10
|
E
10
|
NE
10
|
NE
9
|
E
10
|
| 300m |
E
5
|
NE
7
|
E
7
|
NE
7
|
E
6
|
E
5
|
| Valley |
E
4
|
E
6
|
E
6
|
NE
6
|
E
4
|
E
3
|
Wind gust (mph)
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m | 13 | 15 | 15 | 14 | 14 | 15 |
| 300m | 11 | 11 | 13 | 13 | 13 | 11 |
| Valley | 9 | 11 | 12 | 12 | 12 | 8 |
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
9°
|
11°
|
14°
|
15°
|
15°
|
12°
|
| 300m |
10°
|
14°
|
18°
|
18°
|
17°
|
12°
|
| Valley |
10°
|
15°
|
19°
|
20°
|
18°
|
13°
|
| Freezing Level |
1,600m
|
1,800m
|
1,900m
|
2,100m
|
2,200m
|
2,200m
|
Altitude above mean sea level
| 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|
| 600m |
6°
|
9°
|
12°
|
13°
|
13°
|
10°
|
| 300m |
8°
|
13°
|
16°
|
17°
|
16°
|
12°
|
| Valley |
10°
|
14°
|
17°
|
18°
|
17°
|
13°
|
Additional weather information
Meteorologist's view
With UV levels high and very little cloud expected on Monday, care should be taken in the sun. Hats and sun protection are advised.
Weather
Possibly a little shallow valley mist at first this morning, otherwise it is a fine day with plenty of warm sunshine. A little fair weather cloud is likely through the afternoon with a very small chance of an isolated shower.
Chance of cloud-free hill tops
100%
Low cloud and visibility
A little hazy at times, otherwise good or excellent visibility.
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 0mm | 0mm | 0mm |
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 dry with sunny spells. Afternoon showers are possible, these may be thundery. Turning cloudier later in the day.
Chance of cloud-free hill tops
95% a little cloud at 600m is possible in the west after sunset.
Maximum wind speed expected
Variable, mainly easterly, 10-15 mph.
Temperature
- At 600m 12 Celsius
- Valley 21 Celsius
- Freezing level Above the summits.
Low cloud and visibility
Excellent, a little hazy at times.
Mountain weather information
Wed 22 May
Sunrise:
Sunset:
Sunny spells and some well scattered showers in the afternoon. Light winds, mainly from the north. Feeling pleasantly warm in the sunshine.
Thu 23 May
Sunrise:
Sunset:
Sunny spells and scattered showers in the afternoon, these possibly heavy with thunder. Light winds, mainly from the north. Feeling pleasantly warm in the sunshine.
Fri 24 May
Sunrise:
Sunset:
Rather cloudy, but with some bright or sunny spells. Mostly dry, but the odd shower in possible through the afternoon. Light winds and pleasantly warm.
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.