Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High confidence in unsettled conditions continuing but lower confidence in details and timings of rainfall. High confidence for some brighter conditions on Saturday but turning quite wet and windy on Sunday again.
This evening forecast
Cloudy with persistent rain through the evening. Fresh southwesterly winds continuing.
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.
Severe Chill Effect
Wind significantly lowers the ‘feels-like’ temperature relative to the actual temperature, with even moderate winds significantly adding to the chilling effect. Strong winds can result in a severe and debilitating wind chill many degrees below the actual temperature. This effect will be enhanced in rain or wet snow. Without protection, prolonged exposure could result in frost nip or frostbite on exposed parts of the body and/or hypothermia.
Mountain weather forecast
Cloudy with some outbreaks rain, perhaps brighter for a time in the afternoon, feeling cool in fresh northwesterly winds.
| 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) |
70% | 70% | 60% | 60% | 40% | 80% | 60% | 50% |
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 |
SW
11
|
E
10
|
E
14
|
SE
12
|
N
15
|
N
15
|
N
15
|
NW
12
|
| 300m |
SW
4
|
E
4
|
NE
7
|
NE
7
|
NE
7
|
N
7
|
N
6
|
NW
5
|
| Valley |
SW
3
|
S
3
|
SE
5
|
SE
5
|
N
6
|
N
5
|
N
4
|
NW
5
|
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 | 15 | 13 | 18 | 16 | 20 | 20 | 20 | 18 |
| 300m | 13 | 10 | 14 | 15 | 15 | 15 | 14 | 14 |
| Valley | 12 | 9 | 12 | 13 | 14 | 14 | 12 | 13 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
7°
|
6°
|
6°
|
6°
|
5°
|
5°
|
4°
|
3°
|
| 300m |
9°
|
8°
|
7°
|
7°
|
8°
|
8°
|
6°
|
5°
|
| Valley |
9°
|
8°
|
8°
|
8°
|
9°
|
9°
|
7°
|
6°
|
| Freezing Level |
1,800m
|
2,000m
|
2,000m
|
1,800m
|
1,500m
|
1,300m
|
1,100m
|
1,000m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
4°
|
3°
|
2°
|
3°
|
1°
|
1°
|
-1°
|
-1°
|
| 300m |
8°
|
7°
|
6°
|
5°
|
6°
|
6°
|
5°
|
4°
|
| Valley |
8°
|
8°
|
7°
|
6°
|
7°
|
7°
|
6°
|
5°
|
Additional weather information
Meteorologist's view
A cool feel to the day on Friday with a fresher northerly airstream developing and freezing level lowering towards summit height in the evening.
Weather
A cloudy day with some outbreaks of rain through the morning, perhaps a few brighter spells around eastern hills around the middle of the day but remaining quite cloudy around the more western hills. Quite a fresh, cool feel to the day with northwesterly winds.
Chance of cloud-free hill tops
30%, best chance in the east of the area.
Low cloud and visibility
Broken layers of low cloud above 200m in the morning in the west, perhaps cloud becoming more scattered towards eastern hills with a few breaks possibly developing here. Visibility will be poor in the west in rain at times, moderate or good further east.
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 7.2mm | 7.4mm | 10.2mm |
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
A mostly dry day with sunny spells, a few light showers are possible, turning cloudier at times but a fair day for the end of February.
Chance of cloud-free hill tops
80%
Maximum wind speed expected
Northwesterly 10mph becoming Southwesterly 10-15mph in the afternoon
Temperature
- At 600m Plus 5 Celsius
- Valley Plus 3 rising to 8 Celsius.
- Freezing level 1000m
Low cloud and visibility
Patchy low cloud at times above 500m may affect summits at times. Visibility generally good or very good out on the hills.
Mountain weather information
Sun 1 Mar
Sunrise:
Sunset:
A wet and windy start on Sunday with rain through the morning, a few drier spells possible in the afternoon, strong southwesterly winds expected, possibly summit gales.
Mon 2 Mar
Sunrise:
Sunset:
Strong westerly winds and periods of rain expected, mainly the morning, some uncertainty on timings. Feeling colder on Monday.
Tue 3 Mar
Sunrise:
Sunset:
A dry and bright day is possible with light winds, low confidence.
Updated at:
Summit specific forecast
Mountain summit forecast map
Loading map…
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.