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
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
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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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
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
Tuesday 18th November 2025
Last updated
Mon 17th Nov 25 at
4:00PM
Summary for all mountain areas
Extensive snow Scottish Highlands, falling to lower elevations inland, later showers of snow & hail in north/west. Wind varied in Scotland, then strengthening northerlies. Rain and some snow over higher tops England and Wales plus westerlies up to gale force. Cloud covering most higher terrain.
Headline for Brecon Beacons
Windy. Rain becomes frequent, heavy bursts spread east.
How windy? (On the summits)
Westerly 25-30mph or slightly less around dawn, but suddenly squally 35mph in morning. May moderate slightly, then during afternoon typically increasing again, often 35mph. Well into night, switching northerly 40mph.
Effect of the wind on you?
Walking likely strenuous much of the day with considerable wind chill; conditions generally deteriorating.
How Wet?
Showery rain becoming widespread and frequent
Scattered showers onto western hills through the morning, briefly sleet on high tops. Becoming more widespread heavier bursts of more frequent rain spreading from west middle of day into afternoon, chance of hail.
Cloud on the hills?
Increasingly widespread over hills
Banks of cloud come and go above 700m on western hills from dawn. High breaks east, particularly east of Pen-Y-Fan where summits often clear for several hours. Cloud fills in more widely with bases lowering as rain arrives.
Chance of cloud free summits?
60% lowering to 20%
Sunshine and air clarity?
Bright in the east in the morning, trending overcast with a few brighter spells. Excellent visibility, turning poor with rain, very poor on high ground.
How Cold? (at 750m)
+2C all day; then into night lowering just below 0C. Feeling like -10C in strongest direct wind.
Freezing Level
Just above the high summits, though some local frosty patches onto lower slopes at dawn. Then overnight dropping toward 600-700m.
Viewing Forecast For
Brecon Beacons
Wednesday 19th November 2025
Last updated
Mon 17th Nov 25 at
4:00PM
How windy? (On the summits)
Northerly 30 to 40mph, likely strongest sustained speeds in morning.
Effect of the wind on you?
Challenging walking conditions on higher exposed terrain especially morning, very blustery all day; significant wind chill.
How Wet?
Becoming dry, local showers west
Patchy snow, sleet or rain lower slopes, from before dawn may linger into morning, tending to break up to be dry most places. Locally toward Pembrokeshire, snow and hail showers remain frequent.
Cloud on the hills?
Lifting above many hills
Varied cloud over higher slopes early in the day, tending to lift and break up, leaving occasional patches over the tops.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Fairly cloudy start, more sun develops with time. Visibility may start poor if in snow, but becoming excellent.
How Cold? (at 750m)
-1 or -2C. Wind chill feeling like -15C in stronger speeds.
Freezing Level
600-700m, slight rise into afternoon; also frost in some valleys after dawn, again soon from dusk.
Viewing Forecast For
Brecon Beacons
Thursday 20th November 2025
Last updated
Mon 17th Nov 25 at
4:00PM
How windy? (On the summits)
Northerly 30 to 40mph, speed may vary during day.
Effect of the wind on you?
Often challenging walking conditions on higher exposed terrain; significant wind chill.
How Wet?
Most of region dry
Local snow and hail showers confined to far west coast in Pembrokeshire. Otherwise likely dry all day.
Cloud on the hills?
Mostly very little
Rare fragments around some higher tops, but the hills largely clear.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Generally sunny. Visibility excellent.
How Cold? (at 750m)
-2C. Wind chill feeling like -15C in stronger speeds.
Freezing Level
500-600m, but frost into many valleys in morning, partial thawing lower sunlit slopes.
Planning Outlook
Snow lying most widely in Scottish Highlands, to lower slopes inland, some high tops elsewhere into midweek. Strong to gale force northerlies Wednesday-Thursday, bringing snow and hail showers focused on northern Scotland and onto north-facing coastal districts elsewhere. Sunnier from central Scotland southward through northern England. By Friday into next weekend, winds shift back westerly and freezing levels rise to upper slopes - some rain likely, snow on high tops at times.