Brecon Beacons
Includes all higher summits in the southern half of Wales: the Bannau Brycheiniog / Brecon Beacons National Park, southern Cambrian Mountains and highest Preseli hills.
Wednesday's Forecast
Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
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Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
Viewing Forecast For
Brecon Beacons
Wednesday 26th November 2025
Last updated
Tue 25th Nov 25 at
3:06PM
Summary for all mountain areas
Scotland: Southerly gales with hill fog extend east to become very extensive with rain and drizzle; transient snow upper slopes. England and Wales: Strengthening southerly winds with hills filling in with low cloud with patchy rain and drizzle.
Headline for Brecon Beacons
Strong winds with hills filling in with fog, with frequent rain and drizzle moving in.
How windy? (On the summits)
Southwesterly soon 35 to 40mph, perhaps temporarily 45mph on higher tops.
Effect of the wind on you?
Arduous or difficult walking where exposed with sudden gusts and considerable wind chill.
How Wet?
Rain and drizzle on and off
Rain and drizzle gradually spreading from west morning or middle of day, although very patchy east Wales. Total rainfall fairly small - perhaps little at all mid Wales.
Cloud on the hills?
Most hills filling in with fog
Some higher slopes may initially be cloud free. Will soon deteriorate, cloud base widely dropping below 300-450m. However in mid Wales, most cloud above 500 or 600m.
Chance of cloud free summits?
Lowering to 20%
Sunshine and air clarity?
Glimpses of weak sunshine lower slopes mid and east Wales. Otherwise soon extensively dull and particularly south Wales misty.
How Cold? (at 750m)
2C rising to 6C through daylight. Will feel as cold as minus 8C directly in the wind.
Freezing Level
Above the summits. Frost valleys, mainly east Wales at dawn.
Viewing Forecast For
Brecon Beacons
Thursday 27th November 2025
Last updated
Tue 25th Nov 25 at
3:06PM
How windy? (On the summits)
South to southwesterly, strengthening through morning and with height to 45mph where exposed on higher tops.
Effect of the wind on you?
Deteriorating with significant wind chill and walking widely difficult.
How Wet?
Rain and drizzle on and off
Rain and drizzle most of the day although total rain small mid Wales, where periods when dry.
Cloud on the hills?
Mountains persistently foggy.
Persistent cloud from 200 to 450m although in mid Wales, cloud base 350 to occasionally 600m.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Rare glimpses of weak sun lower slopes mid Wales. Visibility widely poor, hazy at best.
How Cold? (at 750m)
8C. Will feel as cold as minus 5C directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Friday 28th November 2025
Last updated
Tue 25th Nov 25 at
3:06PM
How windy? (On the summits)
Southwesterly 30 to 40mph
Effect of the wind on you?
Be prepared for arduous conditions with significant wind chill and buffeting. Particularly gusty as showers move in.
How Wet?
Showers, frequent for periods.
Frequent showers, and concentrated into a band that will move through at some point in the day associated with trough, risk thunder. Timing uncertainties.
Cloud on the hills?
Often covering the tops.
Bases varying, but will often descend onto the tops, and may well be extensive for several hours, particularly as showers move through.
Chance of cloud free summits?
30%
Sunshine and air clarity?
A little sun coming through in west, but occasional in the east. Visibility sometimes poor due to rain.
How Cold? (at 750m)
3C
Freezing Level
Above the tops
Planning Outlook
A long series of Atlantic lows passing north of or across Britain will bring high rainfall to western mountains together with frequent upland gales (sometimes stormy) and low cloud. Temperatures on higher tops sometimes below freezing point, particularly at the weekend in Scotland, but elsewhere fresh snow transient.