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
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Heavy rain
Near-constant heavy rain, sometimes torrential over the mountains, very wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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.
Heavy rain
Near-constant heavy rain, sometimes torrential over the mountains, very wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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
Wednesday 12th November 2025
Last updated
Tue 11th Nov 25 at
4:27PM
Summary for all mountain areas
Northern areas of the Highlands generally wet, the rain only gradually breaking up. Showers for the southwest Highlands. Dropping below freezing on northern tops later. Heavy rain sets in again across Wales, already flooding expected after previous rain. Mostly dry for much of Pennines, Lakes & south Scotland.
Headline for Brecon Beacons
Heavy rain sweeps back in, wind increasing. Flooding.
How windy? (On the summits)
South-southwesterly 20-30mph, tending to strengthen, later in day and into evening 40mph over tops, gusts 50mph for a time after dark.
Effect of the wind on you?
Possibly fairly small for a time, but increasingly blustery, becoming more arduous with time. Marked wind chill.
How Wet?
Rain setting in heavier again; flooding
Very wet underfoot with streams in spate and flooding following previous rain. Only patchy rain or drizzle early in day, but rain gradually setting in again, sustained heavy rain middle of day into afternoon, further pulses of rain onward into evening. Risk more significant flooding developing.
Cloud on the hills?
Extensive
Likely to shroud the hills all day, to lower elevations southern areas. Some higher bases for a time mid-Wales, but blanketing all hills widely to low levels during rain.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Overcast, misty in most areas, increasingly murky and dull, poor visibility in constant rain.
How Cold? (at 750m)
10C Feeling like 0C or below if in stronger wind.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Thursday 13th November 2025
Last updated
Tue 11th Nov 25 at
4:27PM
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
Tue 11th Nov 25 at
4:27PM
How windy? (On the summits)
Easterly, 45 to 60mph, ferocious gusts around high tops and 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 rain, flooding
A slow-moving extensive belt of rain is likely to affect Wales all day, heaviest sustained falls over eastern hills. Saturated ground, potential for widespread significant flooding.
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.
Planning Outlook
High rainfall totals bring concerns for flooding again, risk more significant in Wales in the days ahead. A marked contrast of temperature north to south this week, but colder air to the north becomes more widespread into the weekend and early next week, leaving higher terrain below freezing for a run of days and some accumulating snow, mostly focused over northern Scottish mountains. Wind will vary, then become east-northeasterlies, gales Friday into Saturday, then a possible brief lull before turning northerly on Sunday. More uncertain outlook further into next week, but some further unsettled areas of low pressure currently show signs of remaining nearby - but often within a colder weather regime.