Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High for quite changeable and mild conditions through the next few days. Some uncertainty in timings of any rain and cloud details so please stay updated on the forecast.
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
Low cloud slowly lifting, but some rain during the afternoon. Windy on the tops. Mild.
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
Weather (at 600m) |
|
|
|
|
|
|
Chance of precipitation (at 600m) |
10% | 10% | 20% | 60% | 80% | 60% |
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
21
|
S
23
|
S
22
|
S
23
|
S
18
|
SW
14
|
| 300m |
SE
7
|
S
11
|
SE
10
|
SE
10
|
S
11
|
SW
8
|
| Valley |
E
4
|
SE
9
|
SE
8
|
E
6
|
SE
7
|
SW
5
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 26 | 29 | 28 | 31 | 24 | 19 |
| 300m | 18 | 23 | 21 | 24 | 23 | 18 |
| Valley | 11 | 21 | 18 | 15 | 18 | 15 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
9°
|
9°
|
10°
|
9°
|
9°
|
9°
|
| 300m |
10°
|
12°
|
12°
|
12°
|
11°
|
10°
|
| Valley |
11°
|
12°
|
13°
|
12°
|
11°
|
11°
|
| Freezing Level |
2,100m
|
2,000m
|
1,900m
|
2,300m
|
2,200m
|
1,900m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
5°
|
5°
|
6°
|
5°
|
5°
|
6°
|
| 300m |
9°
|
9°
|
10°
|
9°
|
8°
|
9°
|
| Valley |
10°
|
10°
|
12°
|
11°
|
10°
|
10°
|
Additional weather information
Meteorologist's view
Strong southeast winds on the high summits and ridges above 600m with gusts of 30 to 40mph.
Weather
Mostly dry and becoming bright with mist and low cloud lifting through the morning. Cloud and outbreaks of rain will then spread northeast during late afternoon and evening.
Chance of cloud-free hill tops
20% becoming 80% through the morning, becoming 20% again in later in the afternoon.
Low cloud and visibility
Areas of fog down to low slopes at first but lifting and breaking through the morning to leave good visibility. The highest summits may hang onto patchy cloud into the afternoon before cloud becomes more extensive above 400m in the evening.
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 5.6mm | 13mm | 40.2mm |
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
Low cloud and occasional rain overnight, clearing by the morning. A mainly dry day with long sunny spells and isolated showers. Strong and gusty winds on the tops.
Chance of cloud-free hill tops
20%, soon becoming 80%.
Maximum wind speed expected
Southerly 20 to 30mph gusts 40mph.
Temperature
- At 600m Plus 7C.
- Valley Plus 10C rising to 13C.
- Freezing level Above summits.
Low cloud and visibility
Extensive cloud and fog above 400m overnight with patches on lower slopes. Cloud lifting and breaking by the morning with good visibility through the day. Just brief reductions in showers.
Mountain weather information
Sun 9 Nov
Sunrise:
Sunset:
Dry start. Cloud and outbreaks of rain will soon spread east during the morning. Strong southerly winds on the tops with gales on exposed ridges. Freezing level above summits.
Mon 10 Nov
Sunrise:
Sunset:
Rain clearing then dry and bright for a while before more rain arrives later. Fresh southerly winds. Freezing level above summits.
Tue 11 Nov
Sunrise:
Sunset:
Remaining mild and rather unsettled with some rain at times and strong southerly winds.
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.