Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High for relatively mild and occasionally unsettled, but lowering for the timing detail of worst of the weather.
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.
Mountain weather forecast
Rather cloudy. Mainly dry start, then showery rain from mid-morning to mid-afternoon.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 600m) |
|
|
|
|
|
|
Chance of precipitation (at 600m) |
10% | 20% | 50% | 40% | 30% | 10% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
S
18
|
SE
15
|
S
14
|
S
12
|
SE
9
|
SE
11
|
| 300m |
E
4
|
SE
5
|
SE
7
|
S
6
|
S
4
|
SE
4
|
| Valley |
SE
2
|
NE
2
|
SE
5
|
S
3
|
S
4
|
S
2
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 22 | 19 | 18 | 16 | 12 | 15 |
| 300m | 9 | 12 | 13 | 13 | 9 | 12 |
| Valley | 7 | 7 | 11 | 9 | 8 | 7 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
11°
|
11°
|
12°
|
12°
|
11°
|
10°
|
| 300m |
12°
|
13°
|
14°
|
14°
|
12°
|
12°
|
| Valley |
11°
|
13°
|
14°
|
15°
|
13°
|
12°
|
| Freezing Level |
2,500m
|
2,500m
|
2,400m
|
2,300m
|
2,200m
|
2,100m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
8°
|
8°
|
9°
|
10°
|
9°
|
8°
|
| 300m |
11°
|
12°
|
13°
|
14°
|
12°
|
12°
|
| Valley |
11°
|
13°
|
14°
|
15°
|
13°
|
12°
|
Additional weather information
Meteorologist's view
Navigation most difficult between late morning and mid-afternoon in hill fog, also very wet ground conditions due to the recent days rainfall.
Weather
A mix of scattered showers and limited clear spells overnight and early morning. Cloud increasing by mid-morning as developing showers feed from the south, with some possibly heavier for the late morning and early afternoon.
Chance of cloud-free hill tops
10-50%.
Low cloud and visibility
Good becoming moderate or poor in showers, very poor within cloud with bases occasionally lowering 500m, most readily between late morning and mid-afternoon.
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 7.4mm | 34.6mm | 53.8mm |
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
Scattered showers and brighter spells at first. Cloud and rain arriving from the west by early afternoon, which clears to the north through the evening. Winds increasing strong for the afternoon.
Chance of cloud-free hill tops
10-50%.
Maximum wind speed expected
Southerly increasing 30mph from mid-afternoon with gusts reaching 35mph across exposed ridges and summits.
Temperature
- At 600m Plus 10 Celsius
- Valley Plus 12 Celsius increasing 15 Celsius during the afternoon
- Freezing level Above summits
Low cloud and visibility
Good becoming moderate or poor in rain and showers, very poor within cloud with bases occasionally lowering 500m, before thickening and lowering for the early afternoon.
Mountain weather information
Sat 8 Nov
Sunrise:
Sunset:
Dry and bright start, then showery rain for the afternoon. Fresh southerly summit winds. Freezing level above all peaks.
Sun 9 Nov
Sunrise:
Sunset:
A further band of rain or showers moving east through the day. Strong southerly summit winds. Freezing level above all peaks.
Mon 10 Nov
Sunrise:
Sunset:
Rather cloudy with occasional rain or showers. Moderate to fresh southerly summit winds. Freezing level above all peaks.
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 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.