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
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
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.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Flooding
Fast-flowing rivers and streams. Some routes may be impassable due to flooding.
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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.
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.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Flooding
Fast-flowing rivers and streams. Some routes may be impassable due to flooding.
Viewing Forecast For
Brecon Beacons
Thursday 13th November 2025
Last updated
Wed 12th Nov 25 at
4:30PM
Summary for all mountain areas
Cold northeasterlies for the Highlands, gale-force over mountains early in day. Snow mostly in northern areas. A slow-moving swathe of rain for southern Scotland and northern England, heavy at times. Previous rain eases to patchy light rain in Wales, but beware of flooding - staying mild here.
Headline for Brecon Beacons
Patchy rain, low cloud, improving. Wind easing.
How windy? (On the summits)
Southwesterly 25-30mph, lessening afternoon, a marked lull by dusk, but will strengthen E'ly 30-50mph into night.
Effect of the wind on you?
Strenuous walking on exposed high terrain for several hours, becoming fairly small. Beware deteriorating again into night.
How Wet?
Drizzly rain, easing; flooding
Very wet ground and flooding following heavy rain on Wednesday - this slowly easing off up to Thursday dawn, leaving drizzly rain, primarily over high tops and south/western aspects, this tending to ease as the day goes.
Cloud on the hills?
Extensive, improving, best mid-Wales
Most hills covered in morning, bases lifting to near or above 600m on northern and eastern slopes, some local breaks to tops may form on the Black Mountains. Fog likely remains extensive on high southern and western slopes.
Chance of cloud free summits?
30%
Sunshine and air clarity?
The day starts overcast with mostly poor visibility. Bright or sunny breaks will occur mid-Wales with improving visibility here.
How Cold? (at 750m)
9C. Feeling just above freezing in strongest winds early in the day.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Friday 14th November 2025
Last updated
Wed 12th Nov 25 at
4:30PM
How windy? (On the summits)
Easterly, 50 to 60mph, later 70mph, ferocious gusts around tops, some passes, also downslope to west of high terrain.
Effect of the wind on you?
Difficult conditions across the mountains, gusts likely to knock you over, not just on highest terrain. Significant wind chill.
How Wet?
Prolonged heavy rain, flooding
A slow-moving extensive belt of rain affects Wales all day, incessant heavy rain setting in, particularly over eastern hills. Saturated ground, expect widespread significant flooding developing.
Cloud on the hills?
Extensive
Shrouding the hills widely above 400-500m, or to some lower slopes east Wales. Highest bases toward Cardigan Bay.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Overcast and dull. Visibility poor due to rain.
How Cold? (at 750m)
4 or 5C. Wind chill feeling like -10C.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Saturday 15th November 2025
Last updated
Wed 12th Nov 25 at
4:30PM
How windy? (On the summits)
Easterly 50-60mph from dawn, powerful gusts downslope to west. May gradually decrease, some uncertainty.
Effect of the wind on you?
Widely difficult, turbulent gusts on some slopes may continue all day. Some improvement possible with time.
How Wet?
Rain fading out, flooding
Continuing rain from overnight through dawn, but intensity easing and gradually becoming patchier during the day, leaving occasional mostly light rain afternoon. Considerable flooding expected.
Cloud on the hills?
Extensive
Likely to blanket most hills all day, lowest bases in eastern areas, above 400-500m. Slowly bases may rise a little. Higher breaks toward west Wales.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Overcast, some brighter skies may develop toward west coast. Hazy, visibility improving as rain eases.
How Cold? (at 750m)
3C. Wind chill feeling like -12 to -15C in exposure.
Freezing Level
Above the summits.
Planning Outlook
High rainfall with significant flooding expected for Wales by the end of this week, risk flooding too in Peak District. Drier overall across the Highlands. Strong to gale force easterlies later this week, then northerlies are expected to dominate onward into next week. Colder air extends to all areas, staying below freezing over higher mountains most likely throughout next week to 10 days. Some accumulations of snow over Scottish mountains, initially mostly northern areas, possibly more widely across all mountain areas during next week - Tuesday-Wednesday in particular, but lower confidence of forecast detail by then.