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.
Thursday'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.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
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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.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Viewing Forecast For
Brecon Beacons
Thursday 27th November 2025
Last updated
Wed 26th Nov 25 at
1:07PM
Summary for all mountain areas
Powerful south to south-westerly winds, bringing widespread upland gales with rain on and off, frequent or constant for western mountains, and persistent fog across the hills. Later a cold front will move in, clearing to squally showers Scotland around dusk.
Headline for Brecon Beacons
Gales and significant wind chill with frequent rainfall and extensive hill fog.
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
Wed 26th Nov 25 at
1:07PM
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
Viewing Forecast For
Brecon Beacons
Saturday 29th November 2025
Last updated
Wed 26th Nov 25 at
1:07PM
How windy? (On the summits)
Very low confidence: Direction varying from southwest to north-westerly as low passes through, 30 to 50mph, may ease.
Effect of the wind on you?
Be prepared for significant wind chill with considerable buffeting and arduous or difficult conditions for a time.
How Wet?
Risk of prolonged rain
Uncertainty over track of small scale low; but scope for a prolonged period of rainfall across the hills, with snow increasingly falling on the tops later.
Cloud on the hills?
Extensive in rain
Hills covered widely in fog in prolonged rain and later summit snow; perhaps for several hours or all day.
Chance of cloud free summits?
Sunshine and air clarity?
Overcast. Visibility likely often poor due to rain or very poor on the summits due to snow.
How Cold? (at 750m)
2C, but may later lower to 0C.
Freezing Level
Above the tops, but may drop to 800m.
Planning Outlook
Colder over the weekend again, but much uncertainty on the track of a small scale low on Saturday which would bring rain, upland snow and a core of strong winds for a time, most likely England and Wales. Sunday then mostly dry, bright and cold. Next week,. 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. Freeze-thaw cycles, with periods of fresh snow for Scottish hills especially.