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 11th December 2025
Last updated
Wed 10th Dec 25 at
4:27PM
Summary for all mountain areas
Gale force winds across most hills and mountains, severe gales high Scottish tops particularly morning in west, powerful gusts downslope in places. Low cloud and some drizzly rain west, mostly dry east/northeast. More persistent rain develops for western Scotland afternoon onward.
Headline for Brecon Beacons
Windy, gale force on tops. Patchy cloud, some drizzle west.
How windy? (On the summits)
South-southwesterly 35 to 45mph, at times over 50mph higher tops, mainly in west.
Effect of the wind on you?
Challenging walking conditions, in places remaining difficult over higher tops. Considerable wind chill.
How Wet?
Locally damp southwest, largely dry east
Spots of drizzle in the air on some southern slopes, more frequent in west. Rain then develops from west into night, becoming heavier in west later.
Cloud on the hills?
Varied, most persistent southern hills
Banks of cloud covering some slopes, most persistent on areas toward the south in particular, from mid-slopes upward. Local breaks northward into mid-Wales.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Uncertain, sun may break through, best mid-Wales. Southern areas may stay cloudy and hazy or misty.
How Cold? (at 750m)
5C, slight drop into night. Feeling like -5 to -8C in the wind.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Friday 12th December 2025
Last updated
Wed 10th Dec 25 at
4:27PM
How windy? (On the summits)
Westerly 20-25mph; some variable direction, tending to strengthen around dusk, more so into night.
Effect of the wind on you?
Fairly small, but winds may be uncomfortable at times in exposure.
How Wet?
A few showers west slopes
Rain onto eastern hills at dawn soon clears. Scattered showers drift onto southern slopes, mostly west of Merthyr Tydfill.
Cloud on the hills?
Mostly high tops and west slopes
Extensive cloud before dawn soon breaks, a few ragged patches leftover at various elevations though these fading. Caps will come and go over high terrain, most frequent and prolonged on southern slopes, particularly in the west.
Chance of cloud free summits?
40%; 60% eastern hills
Sunshine and air clarity?
Cloudy skies early break, best of sun on northern slopes. Excellent visibility early, a haze building near the coasts.
How Cold? (at 750m)
4C, a degree or two warmer in the east at first. Feeling below freezing in direct wind.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Saturday 13th December 2025
Last updated
Wed 10th Dec 25 at
4:27PM
How windy? (On the summits)
Southwesterly, strengthening during daytime from 25-35mph to 50mph, risk stronger gusts toward evening.
Effect of the wind on you?
Increasingly strenuous walking conditions on higher terrain, more arduous later in day; considerable wind chill.
How Wet?
Little or no rain
Patchy spots of rain or drizzle, most common western areas, whilst substantially dry more eastern hills. Onward into night, increasing risk more persistent steady then heavier rain.
Cloud on the hills?
Varied over tops
Cloud banks drifting over higher tops, most frequent on hills toward south and west. Higher base further east and into mid-Wales, above tops for periods.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Largely cloudy, high cloud thickening. Hazy west, visibility reduced in rain, but more often good toward east.
How Cold? (at 750m)
3 or 4C, tending to rise a little later in day. Wind chill feeling near to -10C.
Freezing Level
Above the summits.
Planning Outlook
Staying unsettled into the weekend and beyond as southwesterly winds prevail and low pressure systems pass to the northwest of Scotland; sustained gales over the mountains, severe or stormy for periods. Temperatures only just below freezing intermittently on higher Scottish tops, even here will experience spells above freezing with thawing, any lying snow patchy, but beware some icy surfaces on the very highest tops where some refreezing occurs. Rainfall will be frequent and heavy for periods, sometimes showery with hail. Expect very wet ground conditions and further flooding of streams and some rivers.