Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High for overall story, low with respect to low cloud and fog Sunday morning and for location of showers through Sunday and Monday.
This evening forecast
Dry and bright conditions to end the day with skies turning hazy later.
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.
Poor Visibility
Poor visibility presents challenging route finding conditions. Visibility could be significantly less than 50 metres in all directions with few or no visual references, especially on featureless moors or plateaux. Distances become hard to judge and cliff or cornice edges can be difficult to recognise. These conditions require good navigational skills. There is a risk of white-out conditions when mist or fog is combined with extensive snow cover.
Mountain weather forecast
A cloudier day ahead with the odd spot of rain possible.
| 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% | <05% | <05% | <05% | 10% | 10% | 10% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
SE
7
|
SE
8
|
SE
9
|
SE
9
|
S
10
|
S
8
|
S
4
|
W
4
|
| 300m |
SE
3
|
E
4
|
E
4
|
E
5
|
S
6
|
S
6
|
SW
3
|
SW
3
|
| Valley |
SE
2
|
E
4
|
E
3
|
E
5
|
SE
5
|
S
5
|
SW
3
|
W
3
|
Wind gust (mph)
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m | 9 | 10 | 12 | 13 | 13 | 11 | 6 | 6 |
| 300m | 4 | 9 | 8 | 8 | 10 | 10 | 7 | 4 |
| Valley | 4 | 9 | 8 | 9 | 10 | 9 | 7 | 5 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
12°
|
10°
|
9°
|
10°
|
12°
|
13°
|
13°
|
10°
|
| 300m |
9°
|
8°
|
6°
|
11°
|
16°
|
17°
|
15°
|
9°
|
| Valley |
8°
|
8°
|
7°
|
11°
|
17°
|
17°
|
16°
|
10°
|
| Freezing Level |
1,900m
|
1,800m
|
1,700m
|
1,700m
|
1,600m
|
1,700m
|
1,700m
|
1,900m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
10°
|
9°
|
7°
|
8°
|
10°
|
12°
|
12°
|
9°
|
| 300m |
8°
|
6°
|
5°
|
10°
|
15°
|
15°
|
14°
|
9°
|
| Valley |
7°
|
7°
|
6°
|
10°
|
15°
|
16°
|
15°
|
9°
|
Additional weather information
Meteorologist's view
A great day for any outdoor activities. Feeling rather chilly at first with warmer layers recommended. Sunny intervals and moderate to high UV levels expected so sun protection is suggested.
Weather
A cloudier day ahead with the potential for low cloud on eastward facing slopes to the east of the park and the odd patch of mist and fog in sheltered valleys. Some brighter or sunny spells still possible through the morning but cloud will gradually thicken from the west which may result in the odd spot of rain through the afternoon.
Chance of cloud-free hill tops
80% rising to 95%.
Low cloud and visibility
Potential for some mist and fog in sheltered valleys, or hill fog on eastward facing slopes to extreme east of park at first which should quickly lift this morning. Visibility will be poor or very poor in any mist or fog at first but excellent otherwise, with good views over distant peaks likely.
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
Some localised mist and fog patches possible at first in sheltered valleys, this will quickly clear to leave a bright and dry start to the day with plenty of sunny spells. There is a very low risk of some isolated showers later in the day, most likely to the east of the national park.
Chance of cloud-free hill tops
90% rising to 95%.
Maximum wind speed expected
Northeasterly 15-20mph.
Temperature
- At 600m Plus 5 Celsius rising to Plus 13 Celsius.
- Valley Plus 5 Celsius rising to Plus 19 Celsius.
- Freezing level Above summits.
Low cloud and visibility
Any valley mist and fog may lift briefly into low cloud before dissipating. Very good or good visibilities expected with distant hills often turning hazy. Very poor or poor visibility in mist of fog initially or in low cloud as it lifts.
Mountain weather information
Tue 28 Apr
Sunrise:
Sunset:
Dry and bright with variable amounts of cloud around throughout the day. Breezy northeasterly winds and freezing level above summits.
Wed 29 Apr
Sunrise:
Sunset:
Another dry and bright with variable amounts of cloud around throughout the day. Northeasterly winds becoming strong over summits and ridges. Freezing level above summits
Thu 30 Apr
Sunrise:
Sunset:
Settled weather persisting with more dry weather and sunny spells throughout. Moderate to fresh easterly winds, often strong over summits and ridges.
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.