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.
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.
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.
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.
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 30th October 2025
Last updated
Wed 29th Oct 25 at
3:54PM
Summary for all mountain areas
A temporary lull in the wind will give way as later in the day upland gales reach western mountains. Substantially dry, although 'patchy' rain will reach Wales and later in the day SW Scotland and NW England. Higher terrain frozen across the Scottish Highlands.
Headline for Brecon Beacons
Increasingly windy: Upland gales developing. Occasional rain.
How windy? (On the summits)
Southerly 20 to soon on western summits 30mph post dawn. Progressively strengthening to 45, perhaps 55mph western summits by mid afternoon.
Effect of the wind on you?
Deteriorating as buffeting and wind chill become very considerable. General mobility may become difficult.
How Wet?
Rain setting in by about midday
Dry most or perhaps all morning east Wales, but turning to rain on and off west Wales. Occasional rain through rest of day - negligible rainfall in total east Wales.
Cloud on the hills?
Gradually filling in across the hills; lowest base southern hills
Fragments higher slopes, but most tops cloud free most or in east Wales all morning. Deteriorating in rain as cloud fills in across the hills, widely above 200 or 300m south of A40 and Preseli, mostly above 400 or 500m east and mid Wales.
Chance of cloud free summits?
Dropping to 10% afternoon west Wales, and 30% elsewhere
Sunshine and air clarity?
Little or no sun. Excellent visibility but becoming misty in rain.
How Cold? (at 750m)
5C; rising slowly through the day. Will feel as cold as minus 6C in the wind later in day.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Friday 31st October 2025
Last updated
Wed 29th Oct 25 at
3:54PM
How windy? (On the summits)
Southerly, speeds increasing quickly with height to between 40 and perhaps on higher westernmost summits 50mph.
Effect of the wind on you?
Widely difficult walking and significant wind chill in upland gales.
How Wet?
Rain on and off or frequently
Rain, frequent south Wales, (Preseli and south of the A40) where may rarely cease over several hours. Total rainfall small north from Black Mountains.
Cloud on the hills?
Very extensive and low; perhaps very little east Wales
Fog, from lowest slopes up Presili east to about Pen-y-Fan most or all day. Elsewhere, cloud base 450 to 600m, but possibly an edge to the low cloud may leave summit in east Wales largely cloud free all day.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Weak sunshine at times probably only east Wales, where visibility excellent. Widely dull and misty west Wales.
How Cold? (at 750m)
9C. Will feel more like minus 7C directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Saturday 1st November 2025
Last updated
Wed 29th Oct 25 at
3:54PM
How windy? (On the summits)
Southwesterly in the range 30 to 40mph; particularly gusty near precipitation.
Effect of the wind on you?
Walking arduous or difficult and considerable wind chill on higher areas, especially near precipitation.
How Wet?
Showers, turning heavy
Sudden showers, may well become heavy afternoon with hail and isolated thunder.
Cloud on the hills?
Extensive on higher summits
Cloud widely covering higher areas at dawn. Will improve as cloud base rises to 750-900m but abruptly around 450m near rain.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Brief patches of sun, particularly east Wales. Hazy and but abruptly poor visibility in precipitation.
How Cold? (at 750m)
5 dropping toward 2C. Will feel as cold as minus 8C directly in the wind.
Freezing Level
Above the summits.
Planning Outlook
A long period (well into November) of frequent rainfall, particularly western mountains where widely considerable accumulation, strong or gale force upland winds and low cloud. Temperatures generally higher than at present: brief interludes in Scotland where freezing level drops below higher summits.