Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High for unsettled weather for the next few days. Increasing confidence for a change to somewhat more settled weather by the weekend.
This evening forecast
Windy with spells of rain. Summit southwesterly gales.
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.
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.
Mountain weather forecast
Windy with rain, heavy at times
| 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) |
40% | 40% | 40% | 40% | 50% | 70% | 70% | 70% |
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
29
|
SW
28
|
S
25
|
S
25
|
S
23
|
S
20
|
S
20
|
S
21
|
| 300m |
SW
18
|
SW
17
|
S
16
|
S
16
|
S
16
|
S
13
|
S
13
|
S
13
|
| Valley |
SW
15
|
SW
16
|
S
15
|
S
14
|
S
13
|
S
11
|
S
11
|
S
11
|
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 | 41 | 39 | 36 | 36 | 34 | 29 | 30 | 31 |
| 300m | 36 | 35 | 33 | 32 | 31 | 26 | 26 | 26 |
| Valley | 34 | 34 | 32 | 31 | 29 | 26 | 25 | 26 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
10°
|
10°
|
10°
|
10°
|
10°
|
10°
|
11°
|
11°
|
| 300m |
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
13°
|
13°
|
| Valley |
12°
|
12°
|
12°
|
12°
|
13°
|
13°
|
13°
|
13°
|
| Freezing Level |
2,700m
|
2,600m
|
2,900m
|
2,900m
|
2,900m
|
2,800m
|
2,800m
|
2,900m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 600m |
6°
|
6°
|
6°
|
6°
|
6°
|
7°
|
7°
|
7°
|
| 300m |
9°
|
9°
|
9°
|
9°
|
9°
|
10°
|
10°
|
10°
|
| Valley |
10°
|
10°
|
9°
|
10°
|
10°
|
11°
|
11°
|
11°
|
Additional weather information
Meteorologist's view
Rain and strong winds will lead to drenching conditions at times. Watercourses may become flooded.
Weather
A lot of low cloud through the day along with spells of rain. Rain is likely to turn more widespread and heavier through the afternoon and evening.
Chance of cloud-free hill tops
10%
Low cloud and visibility
Poor in widespread hill fog down to 600 to 800 metres throughout the day.
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 12.8mm | 19.8mm | 34mm |
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
Dull in the morning with patchy light rain or drizzle. Rain will become more persistent for a time in the afternoon before drier weather extends northwards through the evening.
Chance of cloud-free hill tops
Little chance during daylight hours
Maximum wind speed expected
Southwesterly 25 mph
Temperature
- At 600m Plus 12 Celsius
- Valley Plus 12 rising to 14 Celsius
- Freezing level Above the summits
Low cloud and visibility
Poor in extensive cloud down to 600 metres for much of the day. This will break up and lift off the tops after dark.
Mountain weather information
Thu 6 Nov
Sunrise:
Sunset:
Cloudy with occasional light rain or drizzle, but some cloud breaks likely across the north of the area through the afternoon and evening. Strong southerly summit winds.
Fri 7 Nov
Sunrise:
Sunset:
Cloudy in the morning with some rain for a time. Drier and clearer weather developing through the afternoon.
Sat 8 Nov
Sunrise:
Sunset:
Dry with some sunny spells and only small amounts of summit cloud.
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.