Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High for mostly cloudy days through Friday and Saturday and for a change to more unsettled conditions over the weekend, but lower with regard to inversion details and rainfall details from late Saturday.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
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
Mostly cloudy but mainly dry. Freshening southeasterly winds.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 600m) |
|
|
|
|
|
|
Chance of precipitation (at 600m) |
10% | 10% | <05% | <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 |
SE
10
|
SE
8
|
S
9
|
SE
8
|
SE
10
|
SE
12
|
| 300m |
E
5
|
E
4
|
SE
5
|
SE
5
|
SE
5
|
SE
5
|
| Valley |
E
3
|
E
3
|
E
6
|
E
6
|
SE
4
|
E
4
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 15 | 11 | 11 | 11 | 15 | 18 |
| 300m | 8 | 8 | 8 | 9 | 12 | 14 |
| Valley | 6 | 7 | 10 | 11 | 10 | 11 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
8°
|
8°
|
10°
|
11°
|
10°
|
9°
|
| 300m |
7°
|
9°
|
13°
|
14°
|
11°
|
10°
|
| Valley |
7°
|
9°
|
14°
|
14°
|
11°
|
10°
|
| Freezing Level |
2,000m
|
2,000m
|
1,900m
|
1,900m
|
1,900m
|
1,900m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
5°
|
6°
|
8°
|
9°
|
8°
|
6°
|
| 300m |
6°
|
8°
|
12°
|
13°
|
10°
|
9°
|
| Valley |
7°
|
9°
|
13°
|
14°
|
10°
|
10°
|
Additional weather information
Meteorologist's view
Nothing to add.
Weather
Quite a lot of cloud across the hills today, the best of brighter spells in the west. Mainly dry through the evening.
Chance of cloud-free hill tops
85%
Low cloud and visibility
Cloud bases should remain above summits today. Visibility good or very good, with clear views of distant hills.
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
Another cloudy day, but turning brighter later in the day. Risk of more persistent rain reaching the area later in the evening.
Chance of cloud-free hill tops
30% initially, becoming 80% in the afternoon.
Maximum wind speed expected
Southeasterly 15-20mph increasing 25-30mph through the afternoon, gusts around 45mph over ridges and summits in the evening.
Temperature
- At 600m Plus 7 or 8 Celsius
- Valley Around plus 8 or 9 Celsius overnight rising to plus 15 Celsius by day
- Freezing level Above the summits
Low cloud and visibility
Cloudy with bases down to 400-500m initially, this lifting above summits by midday. Cloud lowering to 500-600m in the evening. Away from cloud visibility good or very good, falling to several kilometres at times in evening rain.
Mountain weather information
Sun 19 Oct
Sunrise:
Sunset:
Cloudy with occasionally heavy rain, clearing to showers later. Strong southeasterly winds, veering southwesterly and easing a little later. Freezing levels remaining above summits.
Mon 20 Oct
Sunrise:
Sunset:
Rather cloudy with showers or longer spells of rain. Occasionally strong southwesterly winds, turning more westerly later. Freezing levels above the summits.
Tue 21 Oct
Sunrise:
Sunset:
A mix of sunny spells and showers, the showers easing through the afternoon. Fresh westerly winds, turning more southerly and easing through the afternoon. Freezing level above the 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.