Mountain weather
Brecon Beacons Mountain weather forecast table
Confidence
High for continuing cold but largely dry, but lower for details regarding any snow showers on Saturday.
This evening forecast
Dry with long clear spells. Mainly light northeasterly winds
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
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
Dry with long sunny spells. Mainly light winds
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
Weather (at 600m) |
|
|
|
|
|
|
|
|
Chance of precipitation (at 600m) |
00% | 00% | 00% | 00% | 00% | <05% | <05% | 10% |
Wind direction and speed (mph)
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m |
NE
9
|
NE
9
|
N
9
|
N
7
|
NW
5
|
W
6
|
W
7
|
W
7
|
| 300m |
NE
3
|
NE
2
|
N
2
|
W
1
|
W
3
|
W
4
|
W
5
|
W
4
|
| Valley |
N
2
|
N
1
|
NW
2
|
NW
3
|
W
3
|
W
4
|
W
4
|
W
4
|
Wind gust (mph)
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m | 13 | 13 | 12 | 10 | 7 | 10 | 11 | 10 |
| 300m | 7 | 7 | 6 | 4 | 6 | 9 | 9 | 8 |
| Valley | 6 | 6 | 5 | 4 | 6 | 9 | 9 | 9 |
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m |
-4°
|
-4°
|
-4°
|
-3°
|
-1°
|
-1°
|
-3°
|
-3°
|
| 300m |
-4°
|
-4°
|
-3°
|
-3°
|
1°
|
1°
|
-2°
|
-2°
|
| Valley |
-4°
|
-3°
|
-2°
|
-2°
|
2°
|
1°
|
-2°
|
-2°
|
| Freezing Level |
0m
|
0m
|
0m
|
0m
|
200m
|
300m
|
200m
|
200m
|
Altitude above mean sea level
| 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
|---|---|---|---|---|---|---|---|---|
| 600m |
-9°
|
-9°
|
-9°
|
-7°
|
-4°
|
-4°
|
-7°
|
-7°
|
| 300m |
-6°
|
-6°
|
-5°
|
-5°
|
0°
|
-1°
|
-4°
|
-4°
|
| Valley |
-7°
|
-6°
|
-4°
|
-4°
|
0°
|
-1°
|
-4°
|
-5°
|
Additional weather information
Meteorologist's view
Frozen surfaces persisting at all but the lowest levels through the day.
Weather
Dry and clear overnight, perhaps some low level mist and freezing fog patches. Then a dry day with long spells of sunshine, especially through the morning with a little more cloud in the afternoon. Risk of one or two light snow showers in the evening.
Chance of cloud-free hill tops
Close to 100% through much of the day, chances fall a little through the evening.
Low cloud and visibility
Little or no cloud below the summits until evening with visibility very good or excellent, perhaps a kilometre or less in any low level mist and fog patches and any evening snow showers.
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 0.2mm | 0.2mm | 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 few snow showers possible but most places dry with some good spells of sunshine.
Chance of cloud-free hill tops
Around 60%
Maximum wind speed expected
Westerly winds around 10mph or less
Temperature
- At 600m Around minus 3 Celsius
- Valley Minus 4 or 5 Celsius overnight, rising to plus 3 or 4 Celsius by day
- Freezing level Around 300m
Low cloud and visibility
Occasional or periods of cloud above about 600m. Otherwise visibility very good falling to around a kilometre at times in snow showers.
Mountain weather information
Sun 11 Dec
Sunrise:
Sunset:
Mainly dry with long sunny spells. Mainly light northeasterly winds. Frozen surfaces persisting at all but the lowest levels through the day.
Mon 12 Dec
Sunrise:
Sunset:
Another mainly dry day with sunny spells. Feeling bitterly cold, especially at height, in the strengthening easterly winds. Freezing level rising to 300m.
Tue 13 Dec
Sunrise:
Sunset:
Continuing mainly dry with some sunny spells. Bitterly cold, strong easterly winds, risk of summit gales. Freezing level around 300m.
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 Brecon Beacons is a mountain range in South Wales comprising six main peaks, with the highest peak, Pen y Fan, standing at 886 metres.
The summits of each peak form a long ridge with four of the peaks forming a horseshoe shape around the head of the Taf Fechan River which flows away to the south-east. The Brecon Beacons is said to be named after the ancient practice of lighting signal fires (beacons) on mountains to warn of attacks by invaders, or more recently to commemorate public and national events such as coronations or the Millennium.
For ardent mountain climbers, the Brecon Beacons National Park is among the best that Britain has to offer. While it doesn't have some of the headline-grabbing peaks of Snowdonia or the Scottish Highlands, it fits scores of slightly smaller mountains into its relatively compact 519 square mile area. These include the area's highest peak, Pen y Fan, as well as the marginally smaller Corn Du (873 metres). Both offer rather hospitable, anvil-shaped summits to those who reach the top, with plenty of space for rest and photographs, before tackling the descent.