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.
Tuesday's Forecast
Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Clear
Excellent or superb visibility, no navigation issues.
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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Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Clear
Excellent or superb visibility, no navigation issues.
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
Tuesday 25th November 2025
Last updated
Mon 24th Nov 25 at
12:15PM
Summary for all mountain areas
Higher areas, mainly Scottish Highlands frozen, and frost some valleys at first. Otherwise, benign as from the west the northerly wind drops and snow and hail showers become isolated.
How windy? (On the summits)
Northerly 20 to temporarily 25mph higher slopes after dawn. Will gradually ease to 15mph.
Effect of the wind on you?
Becoming small - though notable wind chill higher tops at first.
How Wet?
Little or no precipitation
Showers, sometimes frequent confined to Preseli hills.
Cloud on the hills?
Mostly or all clearing the summits
Patchy cloud above 500 or 600m west Wales and 800m elsewhere in morning will clear.
Chance of cloud free summits?
90% by midday
Sunshine and air clarity?
Bright sunshine. Very good or excellent visibility.
How Cold? (at 750m)
1C
Freezing Level
Above the summits Frost some valleys morning.
Viewing Forecast For
Brecon Beacons
Wednesday 26th November 2025
Last updated
Mon 24th Nov 25 at
12:15PM
How windy? (On the summits)
Southwesterly soon 35 to 40mph, perhaps temporarily 45mph on higher tops.
Effect of the wind on you?
Extensively 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?
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
Mon 24th Nov 25 at
12:15PM
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.
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 storm force) and low cloud. Temperatures on higher tops sometimes below freezing point, particularly at the weekend in Scotland, but elsewhere fresh snow transient.