Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High for general developments. Medium for cloud.
This evening forecast
Dry with clear spells, but low cloud developing. Fresh to strong south or southwest winds.
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.
Heavy Persistent Rain
Heavy and persistent rain can lead to drenched clothing and footwear with waterproofs often becoming soaked through, especially if accompanied by strong winds. This can lead to significant loss of body heat and an increased likelihood of hypothermia. Terrain may turn increasingly boggy underfoot while streams can flood and become impassable. There may also be a risk of flooding in valleys or glens. If there is snow cover, a heightened avalanche hazard is possible and avalanche reports should be consulted where available.
Mountain weather forecast
Cloudy with outbreaks of rain. Windy.
| 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) |
10% | 20% | 30% | 60% | 60% | 80% | 80% | 80% |
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
25
|
S
23
|
S
21
|
S
18
|
SW
21
|
SW
19
|
SW
19
|
SW
22
|
| 300m |
S
7
|
S
8
|
S
9
|
S
9
|
SW
11
|
SW
10
|
SW
9
|
SW
11
|
| Valley |
E
2
|
W
2
|
S
4
|
S
5
|
SW
8
|
SW
8
|
SW
7
|
SW
8
|
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 | 32 | 29 | 29 | 24 | 28 | 25 | 24 | 30 |
| 300m | 24 | 23 | 24 | 21 | 24 | 21 | 19 | 23 |
| Valley | 11 | 13 | 17 | 16 | 21 | 20 | 18 | 21 |
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°
|
7°
|
9°
|
9°
|
8°
|
8°
|
| 300m |
6°
|
8°
|
8°
|
9°
|
10°
|
11°
|
10°
|
10°
|
| Valley |
8°
|
8°
|
8°
|
10°
|
11°
|
11°
|
10°
|
10°
|
| Freezing Level |
1,700m
|
1,600m
|
1,900m
|
2,200m
|
2,100m
|
2,100m
|
2,000m
|
1,800m
|
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°
|
2°
|
2°
|
5°
|
5°
|
4°
|
3°
|
| 300m |
4°
|
6°
|
6°
|
7°
|
8°
|
9°
|
8°
|
7°
|
| Valley |
8°
|
8°
|
8°
|
9°
|
9°
|
10°
|
9°
|
8°
|
Additional weather information
Meteorologist's view
Nothing further to add
Weather
Mainly dry and cloudy overnight, although some clear spells at first. Cloudy and mostly overcast during daylight hours and through the evening with outbreaks of rain and drizzle. The rain occasionally heavy and persistent, most likely in the afternoon and evening.
Chance of cloud-free hill tops
60% lowering 20% during daylight hours.
Low cloud and visibility
Extensive low cloud, base 200 to 500m, perhaps 600 to 900m overnight and during the early morning. Visibility moderate to very poor in cloud, rain and drizzle, but good at times lower down.
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 2.8mm | 6.8mm | 20.2mm |
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
Cloudy and overcast with rain and drizzle, heavy and persistent at times.
Chance of cloud-free hill tops
20%
Maximum wind speed expected
Southwest 30 to 40mph gusting 50mph with a significant wind chill.
Temperature
- At 600m Plus 5 to 7 Celsius
- Valley Plus 7 to 12 Celsius
- Freezing level Above the summits.
Low cloud and visibility
Extensive low cloud, base 200 to 500m, bases perhaps 600m or higher at first. Visibility moderate to very poor in rain, drizzle and cloud, but good at times lower down.
Mountain weather information
Fri 27 Feb
Sunrise:
Sunset:
Cloudy or bright with occasional rain or showers, perhaps wintry over the summits later. Moderate or fresh west or southwest winds at height. Freezing level near or above the summits.
Sat 28 Feb
Sunrise:
Sunset:
Patchy low cloud, but mainly dry and bright. Rain later with summit snow for a time along with strengthening southerly winds and a severe wind chill. Freezing level well down at first, but rising above the summit by the end of the day.
Sun 1 Mar
Sunrise:
Sunset:
Rain or showers, perhaps drier and brighter around the middle of the day. Summit gales at times. Freezing level near or 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.