Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High in general themes, moderate on precise location of showers Monday and extent of cloud cover throughout.
This evening forecast
Fine and dry weather persisting with patchy cloud slowly dissipating.
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
Another fine and dry start with showers developing later.
| 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% | 20% | 30% | 20% | <05% |
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 |
NE
7
|
E
7
|
E
5
|
E
7
|
SE
8
|
E
8
|
E
9
|
E
11
|
| 300m |
E
5
|
E
4
|
E
3
|
E
6
|
E
6
|
E
7
|
E
6
|
E
4
|
| Valley |
E
4
|
E
3
|
E
2
|
E
6
|
E
6
|
E
6
|
E
5
|
E
4
|
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 | 11 | 12 | 11 | 10 | 12 | 12 | 13 | 19 |
| 300m | 11 | 9 | 7 | 10 | 11 | 12 | 12 | 14 |
| Valley | 9 | 8 | 7 | 10 | 11 | 12 | 11 | 12 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
4°
|
4°
|
4°
|
6°
|
7°
|
7°
|
7°
|
5°
|
| 300m |
4°
|
3°
|
4°
|
8°
|
10°
|
10°
|
10°
|
5°
|
| Valley |
4°
|
4°
|
5°
|
9°
|
11°
|
11°
|
11°
|
6°
|
| Freezing Level |
1,200m
|
1,100m
|
1,000m
|
900m
|
1,100m
|
1,200m
|
1,100m
|
1,100m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
1°
|
1°
|
2°
|
4°
|
4°
|
5°
|
4°
|
2°
|
| 300m |
2°
|
2°
|
3°
|
6°
|
9°
|
9°
|
8°
|
4°
|
| Valley |
3°
|
2°
|
4°
|
8°
|
10°
|
10°
|
10°
|
5°
|
Additional weather information
Meteorologist's view
An excellent day for any outdoor activities with plenty of sunshine to begin and with most areas remaining dry. Moderate UV should be considered with sun protection suggested. Despite UV and sunshine temperatures will still be rather low, and it will feel rather cold at times, therefore warm layers are suggested.
Weather
A dry and fine start to the day as high pressure continues to dominate across the area. Any localised mist or fog patches in the valleys will likely clear away soon after dawn. Fair weather cloud likely to develop through the morning with increased cloud pushing in from the east later. There is the potential for an isolated shower through the afternoon, anywhere in the park, however many places will likely remain dry.
Chance of cloud-free hill tops
90% throughout.
Low cloud and visibility
Any mist or fog patches in valleys may briefly lift to 400-600m before clearing. Apart from this very good or excellent visibilities are expected with views to distant summits likely. Visibilities will be poor or very poor to begin in mist and fog patches, and may dip to good or moderate in any passing showers.
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 0mm | 1.6mm | 11mm |
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
Cloudy to start the day, cloud shrouding the highest peaks to begin. Cloud then clears westward through the morning leaving a dry and bright afternoon with plenty of sunshine.
Chance of cloud-free hill tops
30% initially rising to 100% through the morning as cloud lifts and breaks.
Maximum wind speed expected
Easterly 30-35mph.
Temperature
- At 600m Plus 2 Celsius rising to Plus 7 Celsius.
- Valley Plus 4 Celsius rising to Plus 13 Celsius.
- Freezing level Just above the summits.
Low cloud and visibility
Cloud initially above 300-500m, leading to widespread hill fog. Cloud then lifts and breaks through the morning rising above summits. Visibility initially very poor in any hill fog but very good or good away from this. Visibilities becoming very good or excellent through the afternoon with views of distant peaks possible.
Mountain weather information
Wed 22 Apr
Sunrise:
Sunset:
Patchy cloud around on Wednesday morning, quickly clearing to leave a fine and dry day with plenty of sunshine. Strong to near gale force easterly winds especially over high ground. Freezing level above the summits.
Thu 23 Apr
Sunrise:
Sunset:
Another day with some patchy cloud to start though less widespread than Wednesday, once again quickly clearing to leave a fine and dry day with plenty of sunshine. Winds easing to a moderate easterly. Freezing level above summits.
Fri 24 Apr
Sunrise:
Sunset:
A similar day ahead with patchy cloud clearing to dry and sunny conditions. Moderate easterlies persisting. Freezing level above summits.
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.