Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
Confidence high for a mainly southeasterly airstream to persists with low pressure to the west of the United Kingdom, but lower for precipitation and cloud details. Please note we are aware of an issue affecting forecast wind speeds and gusts for higher-elevation sites (typically above 500m) displayed on the Met Office website and app. The winds shown here in our Mountain Area Forecasts are not affected by this. Our teams are actively working to correct the issue and updates will be deployed as soon as possible.
This evening forecast
Rather cloudy with showers at first, the showers becoming fewer and further between with clear spells developing through the evening and a few showers, these perhaps wintry over the higher summits. Strong southerly winds with a significant chill effect.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Gales
Gale force winds (gusts over 50mph) make walking difficult and strenuous with a potential to be blown over by gusts. There is often a marked increase in winds through cols or on exposed ridges and summits. Distances can take longer to cover and compass bearings become harder to follow accurately.
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.
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
Clear or sunny spells and a few showers. Freshening 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) |
30% | 10% | 10% | <05% | <05% | 20% | 20% | 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 |
S
12
|
S
10
|
SE
11
|
SE
12
|
SE
14
|
SE
13
|
SE
15
|
SE
17
|
| 300m |
SW
6
|
S
4
|
SE
3
|
SE
3
|
SE
7
|
SE
8
|
SE
6
|
SE
6
|
| Valley |
S
4
|
SE
3
|
E
3
|
E
3
|
SE
6
|
SE
7
|
E
6
|
E
6
|
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 | 14 | 15 | 17 | 19 | 18 | 21 | 25 |
| 300m | 15 | 12 | 9 | 10 | 13 | 15 | 15 | 16 |
| Valley | 13 | 9 | 7 | 9 | 13 | 15 | 15 | 15 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
2°
|
1°
|
1°
|
1°
|
3°
|
4°
|
2°
|
2°
|
| 300m |
3°
|
3°
|
1°
|
2°
|
5°
|
6°
|
4°
|
3°
|
| Valley |
3°
|
3°
|
2°
|
2°
|
6°
|
7°
|
5°
|
4°
|
| Freezing Level |
800m
|
800m
|
800m
|
800m
|
900m
|
900m
|
1,000m
|
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 |
-3°
|
-3°
|
-4°
|
-4°
|
-2°
|
-1°
|
-3°
|
-4°
|
| 300m |
0°
|
1°
|
0°
|
0°
|
3°
|
4°
|
1°
|
0°
|
| Valley |
1°
|
1°
|
0°
|
0°
|
4°
|
5°
|
2°
|
2°
|
Additional weather information
Meteorologist's view
Risk of frozen surfaces at all levels at first on Wednesday morning.
Weather
Showers, wintry on summits, largely dying out through the early hours with some long clear spells developing. Then a bright day with sunny spells and just a few showers possible through the morning, perhaps a few more through the afternoon, with any wintriness confined to the higher summits. Becoming mainly dry through the evening.
Chance of cloud-free hill tops
Around 75%.
Low cloud and visibility
Occasional cloud above about 600-750m through much of the day. Away from cloud visibility generally very good falling briefly to a kilometre or two in summit snow showers.
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 22.4mm | 23mm | 31.6mm |
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 largely dry and bright morning, although rather more cloud than Wednesday. Cloud increasing through the afternoon with occasionally heavy rain, preceded by sleet or snow on highest summits, arriving in the early evening.
Chance of cloud-free hill tops
Around 60% falling close to zero by evening.
Maximum wind speed expected
Southeasterly 15-20mph, increasing 30-35mph, gusts around 50mph over ridges and summits, through the afternoon.
Temperature
- At 600m Around plus 1 Celsius, rising to plus 4 Celsius through the evening
- Valley Around zero Celsius at dawn rising to plus 6 or 7 Celsius by day
- Freezing level Around 900m rising above the summits through the evening
Low cloud and visibility
Occasional or periods of cloud above about 600-750m becoming periods or persistent above 450-600m, with patches below, through the late afternoon and evening. Away from cloud visibility generally very good falling to several kilometres in rain and a kilometre or less in summit snow.
Mountain weather information
Fri 30 Jan
Sunrise:
Sunset:
Rain and summit snow clearing overnight then sunny spells and showers. Strong southeasterly winds easing. Freezing level above the summits.
Sat 31 Jan
Sunrise:
Sunset:
Clear or sunny spells and a few showers. Mainly light winds. Freezing level above the summits.
Sun 1 Feb
Sunrise:
Sunset:
Rather cloudy with a few showers, risk of more persistent rain later. Strengthening southeasterly winds. Freezing level above the summits.
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.