Mountain weather
Bannau Brycheiniog / Brecon Beacons Mountain weather forecast table
Confidence
High for dry and bright weather on New Year's Eve but lower confidence in cloud amounts later in the day. High for very cold conditions to start the New Year but lower for day-to-day extent of showers.
Mountain weather forecast
Dry and mostly sunny. Becoming cloudier in evening. Cold.
| Time | 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% | 00% |
Wind direction and speed (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
NE
5
|
N
4
|
NW
4
|
W
5
|
W
8
|
W
13
|
| 300m |
NW
1
|
NW
1
|
W
2
|
W
3
|
SW
5
|
SW
7
|
| Valley |
W
2
|
NW
2
|
W
2
|
W
3
|
W
4
|
W
5
|
Wind gust (mph)
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m | 7 | 5 | 6 | 7 | 10 | 19 |
| 300m | 3 | 2 | 4 | 7 | 9 | 17 |
| Valley | 3 | 3 | 5 | 7 | 10 | 13 |
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-1°
|
-1°
|
-1°
|
0°
|
-1°
|
0°
|
| 300m |
-1°
|
-2°
|
2°
|
2°
|
1°
|
1°
|
| Valley |
0°
|
-1°
|
2°
|
3°
|
1°
|
2°
|
| Freezing Level |
200m
|
200m
|
300m
|
400m
|
300m
|
300m
|
Altitude above mean sea level
| Time | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| 600m |
-4°
|
-4°
|
-3°
|
-3°
|
-5°
|
-6°
|
| 300m |
-2°
|
-4°
|
0°
|
1°
|
-2°
|
-2°
|
| Valley |
-2°
|
-3°
|
1°
|
1°
|
-1°
|
0°
|
Additional weather information
Meteorologist's view
Good hillwalking conditions for the last day of the year with excellent views from the tops. Feeling cold with a wind chill developing this evening as the wind picks up.
Weather
Clear skies at first with widespread frost and patchy freezing fog, this may last through the morning. Otherwise, a dry day with mostly unbroken sunshine. Cloud will spread across from the northwest during the evening.
Chance of cloud-free hill tops
100%, becoming 70% in the evening.
Low cloud and visibility
Mostly excellent visibility but some patchy fog in the valleys in the morning will be slow to clear. Some cloud patches developing above 600m in the evening.
Recent rainfall
Location: Neuadd (Near Pontsticill)
Altitude: 353m
| Last 24 hours | Last 48 hours | Last 72 hours |
|---|---|---|
| 0.4mm | 0.4mm | 0.4mm |
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
Mainly dry overnight then a band of showers will move south during the morning, wintry above 700m. These will clear during the afternoon then mainly dry, bright and cold for the rest of the day with the odd shower, wintry above 400m.
Chance of cloud-free hill tops
70% becoming 30% during the morning, then becoming 70% again during the afternoon.
Maximum wind speed expected
West or Northwest 20-25mph gusts 35mph.
Temperature
- At 600m Plus 1C to Minus 1C.
- Valley Plus 4 or 5C.
- Freezing level 400m rising near to summits in morning, then falling to 600m in afternoon.
Low cloud and visibility
Extensive cloud above 400-600m developing in the morning, this becoming patchier during the afternoon. Generally good visibility away from cloud but falling to a few km or less at times in showers.
Mountain weather information
Fri 2 Jan
Sunrise:
Sunset:
Occasional snow at first, clearing to sunny spells and snow showers. A severe wind chill with fresh northwest winds on the tops. Freezing level lowering to 100m.
Sat 3 Jan
Sunrise:
Sunset:
Further bright spells and scattered snow showers. Remaining bitterly cold with fresh northwest winds. Ground frozen to valley level.
Sun 4 Jan
Sunrise:
Sunset:
Expected to remain very cold with further snow showers but winds and showers may start to ease later. Ground frozen to valley level.
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.