Mountain Weather
Information Service
Brecon Beacons Forecast

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

Moderate breeze, locally gusty
Patchwork of cloud and sun
Hazy, some fog banks
Cool to mild

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Click here to download the latest PDF Last Updated Tue 14th Oct 25 at 4:10PM Last Updated Tue 14th Oct 25 at 4:10PM
View our low-graphics version Last Updated Tue 14th Oct 25 at 4:10PM Last Updated Tue 14th Oct 25 at 4:10PM

Viewing Forecast For

Brecon Beacons
Wednesday 15th October 2025
Last updated Tue 14th Oct 25 at 4:10PM

Summary for all mountain areas

High Scottish Highland tops remain above an inversion except in the far north; cloud becoming well broken in many areas. Variable morning cloud in England and Wales lifts to or off higher slopes with sun breaks. Highest Lakeland and Snowdonia tops at or above cloud tops. Feeling mild for most, an easterly breeze in Wales.

Headline for Brecon Beacons

Variable cloud lifts to high tops with some higher breaks

How windy? (On the summits)

East-northeasterly 15-20mph. Gusty, reaching 25mph over tops and elevated passes. In the morning, hills near and east of Brecon may see winds sustained near and above 20mph.

Effect of the wind on you?

Comfort of walking just becoming affected in gusty wind.

How Wet?

No rain expected

Cloud on the hills?

Cloud banks lift, largely off summits

From dawn, broken cloud at various heights, perhaps more extensive east of Brecon at first. Bases lift to or above the high tops, though always a risk of patches grazing the tops, particularly east.

Chance of cloud free summits?

70%

Sunshine and air clarity?

Increasingly sunny as cloud increasingly breaks; eastern areas may stay cloudier. Very hazy in the morning, improving somewhat.

How Cold? (at 750m)

6 or 7C, some locally cooler slopes and valleys.

Freezing Level

Above the summits

Viewing Forecast For

Brecon Beacons
Thursday 16th October 2025
Last updated Tue 14th Oct 25 at 4:10PM

How windy? (On the summits)

East-southeasterly 10-15mph, locally gusting to 20mph.

Effect of the wind on you?

Fairly small

How Wet?

No rain expected

Cloud on the hills?

Mostly patches on eastern hills

Patchy cloud at various heights east of Brecon, very little to the west. Bases lift to high terrain with fairly frequent banks to the east, remaining well broken west.

Chance of cloud free summits?

50% eastern hills, 80% western hills.

Sunshine and air clarity?

Best of sunshine west, more patchy to the east. Quite haze/misty early, this improving.

How Cold? (at 750m)

6 to 8C. Starting cooler in the valleys, particularly in the west.

Freezing Level

Above the summits

Viewing Forecast For

Brecon Beacons
Friday 17th October 2025
Last updated Tue 14th Oct 25 at 4:10PM

How windy? (On the summits)

Southeasterly 10-15mph, may at times reach 20mph.

Effect of the wind on you?

Fairly small

How Wet?

No rain expected

Cloud on the hills?

Mostly high terrain, well-broken

Banks of cloud on mid and upper slopes with patches lower down at dawn, some local valley mist possible. Cloud lifts to high terrain, breaks for clear summits are likely, particularly west.

Chance of cloud free summits?

70%

Sunshine and air clarity?

Intermittent sunshine, some high cloud around. Good visibility though some haze.

How Cold? (at 750m)

6C

Freezing Level

Above the summits

Planning Outlook

High pressure weakens as the weekend approaches: varied low cloud and valley fog remain likely in the mornings, causing damp surfaces and slippery rock-faces. Cloud lifts higher during the day, starting to shroud mountain peaks more often, cooler temperatures returning to the high tops. Local cloud breaks, best of breaks in west Wales, though a haze will linger on low slopes of southern Scotland, England, and Wales - clearer air likely below the cloud in the Scottish Highlands. Light winds overall, an easterly breeze for Wales. The weekend sees a transition to low pressure. Winds will rise and more high cloud will reduce sunshine, rain then arriving late weekend and coming and going into the next week. Timing and location of rain uncertain for now.