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.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
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.
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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.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
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.
Viewing Forecast For
Brecon Beacons
Tuesday 8th September 2026
Last updated
Mon 7th Sep 26 at
4:18PM
Summary for all mountain areas
Frequent rain and severe gales over Scottish Highlands, easing from west later; feeling cold. Strong wind with showers and sun breaks in south Scotland and England, showers increasingly frequent from north, extended falls forming. Showers scattered in Wales, least rain south with lighter wind.
Headline for Brecon Beacons
Well-scattered showers, mostly later with a strengthening breeze
How windy? (On the summits)
Westerly 20-25mph, shifting northwesterly later and strengthening, finishing 30-35mph over the high tops.
Effect of the wind on you?
Fairly small for a time, but increasingly blustery in exposure, strongest wind starting to impede walking later in the day with a chilly feeling.
How Wet?
Few showers
A few showers drift from the northwest, mostly affecting the Cambrians, but some showers pushing more widely over the mountains, greatest risk later in the day but generally scattered and light in nature.
Cloud on the hills?
Breaking off the summits
Varied banks of cloud above middle slopes early, most extensive west (particularly coastal Cambrians), lifting to approach summits with breaks forming. During showers, bases will intermittently lower, mostly later in the day.
Chance of cloud free summits?
Rising to 70%
Sunshine and air clarity?
A patchwork of sunshine, and more often sunny to the east well into the day, becoming more patchy towards evening. Good visibility though a little haze.
How Cold? (at 750m)
8 or 9C. Later feeling around or just above freezing in direct wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 9th September 2026
Last updated
Mon 7th Sep 26 at
4:18PM
How windy? (On the summits)
Northwesterly 25-30mph to start, easing towards 15mph afternoon, and shifting westerly, may ease further later.
Effect of the wind on you?
Breezy in exposure just at dawn, soon easing, small effects much of the day.
How Wet?
Substantially dry
Patchy rain from before dawn drifts onto the Cambrians, breaking up for dry conditions. Little or none will reach central and east Brecon Beacons.
Cloud on the hills?
Rising, increasingly above tops, best east
Cloud banks shroud high terrain to start, lowest bases coastal Cambrians; soon lifting, breaking towards high summits, only occasional patches grazing the high tops to the west through afternoon.
Chance of cloud free summits?
Rising to 70%
Sunshine and air clarity?
Sun increasingly frequent, particularly towards east Wales. Good visibility, a little early haze.
How Cold? (at 750m)
7C rising to 10C, or 11C easternmost hills. Feeling at or just below freezing to start, wind chill effect easing.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Thursday 10th September 2026
Last updated
Mon 7th Sep 26 at
4:18PM
How windy? (On the summits)
Southwesterly 10-15mph, strengthening, most notably afternoon, to 30mph later, further rising after dark.
Effect of the wind on you?
Mostly small, but the breeze rising noticeably through afternoon.
How Wet?
Little until later
Spotty drizzly rain drifts onto the hills from the southwest, often dry with some extended widely dry windows, but a larger band of rain sweeps in from the west later in the day, setting in persistently into evening.
Cloud on the hills?
Varied over tops
Cloud banks will variably lower onto the high summits, perhaps a few early hours of lower patches to southern slopes, but clear windows likely as well; little cloud north of high Brecon Beacons. Into evening/night, cloud will lower and increasingly fill in.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Sunny windows, notably afternoon, then trending cloudier into evening. Good visibility, a little haze to the south.
How Cold? (at 750m)
8C rising to 11C, staying elevated overnight and may rise a degree further.
Freezing Level
Above the summits.
Planning Outlook
Generally unsettled through the week with spells of rain and showers moving in from the Atlantic, accompanied by strong to gale force mountain winds. Temperatures will vary, mildest toward the south, but cooler air moves in from the north at times bringing higher Scottish tops occasionally close to freezing point, feeling cold in the wind chill. A few high pressure ridges bring settled windows, notably afternoons of Wednesday and Friday; northwestern areas, particularly in Scotland, will tend to hold onto some hill cloud despite high pressure. Weather remains varied from the weekend into next week, Scotland most often unsettled, best windows of improvement to the south. A more settled period is indicated in the later month with warm temperatures.