Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High for the weather to stay dry and turn increasingly warm during the rest of the week.
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, warm and sunny.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 600m) |
|
|
|
|
|
|
Chance of precipitation (at 600m) |
10% | 10% | 10% | <05% | <05% | <05% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
NW
6
|
NW
6
|
W
8
|
W
9
|
NW
10
|
NW
5
|
| 300m |
SW
4
|
W
3
|
W
6
|
W
8
|
NW
8
|
W
3
|
| Valley |
SW
4
|
W
3
|
W
6
|
W
8
|
W
8
|
W
4
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 8 | 8 | 11 | 13 | 14 | 8 |
| 300m | 7 | 5 | 10 | 14 | 14 | 6 |
| Valley | 8 | 6 | 10 | 14 | 14 | 7 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
12°
|
15°
|
18°
|
19°
|
18°
|
15°
|
| 300m |
14°
|
18°
|
22°
|
23°
|
21°
|
16°
|
| Valley |
14°
|
19°
|
22°
|
24°
|
22°
|
16°
|
| Freezing Level |
3,000m
|
3,000m
|
3,100m
|
3,100m
|
3,200m
|
3,200m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
11°
|
14°
|
17°
|
18°
|
17°
|
15°
|
| 300m |
14°
|
19°
|
21°
|
22°
|
20°
|
16°
|
| Valley |
14°
|
20°
|
22°
|
23°
|
21°
|
16°
|
Additional weather information
Meteorologist's view
A warm and pleasant day in the hills with strong sunshine, so UV protection recommended.
Weather
Any early mist and low cloud will soon clear leaving plenty of sunny intervals through much of Wednesday. Feeling pleasantly warm in the sunshine with light winds.
Chance of cloud-free hill tops
70% rising to 95% or more from mid-morning.
Low cloud and visibility
Patchy mist and low cloud down to 500 m in the west of the Park at first, this lifting and breaking to above all summits by mid to late morning. Poor visibility initially in any low cloud, becoming excellent.
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 0mm | 0mm | 1mm |
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
Staying dry through Thursday with sunny spells and light winds, and feeling increasingly warm.
Chance of cloud-free hill tops
70% rising to 95% or more through the morning.
Maximum wind speed expected
Southerly, becoming westerly, 10-15 mph, gusting 15-20 mph.
Temperature
- At 600m Plus 11 Celsius rising to plus 24 Celsius.
- Valley Plus 15 Celsius rising to plus 29 Celsius
- Freezing level Above all summits.
Low cloud and visibility
Patchy mist and low cloud may briefly cover hill tops at first, but this soon lifting and breaking to above all summits through the morning. Poor visibility initially in any low cloud, becoming excellent.
Mountain weather information
Fri 11 Jul
Sunrise:
Sunset:
Dry with largely clear or sunny weather. Light winds. Very warm. Very high UV levels. Freezing levels above the summits throughout.
Sat 12 Jul
Sunrise:
Sunset:
Another fine and dry day with light winds, sunshine perhaps hazy at times. Very warm with very high UV levels. Freezing levels above the summits throughout.
Sun 13 Jul
Sunrise:
Sunset:
Staying dry with clear or sunny conditions and light winds. Once again very warm with very high UV levels. Freezing levels above the summits throughout.
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.