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.
Monday's Forecast
Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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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Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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
Monday 7th September 2026
Last updated
Sun 6th Sep 26 at
4:18PM
Summary for all mountain areas
Showers in west Scotland from dawn, spreading east. Gales across the highlands, severe northwest, feeling cold. Early rain in England and Wales breaks for sun through high cloud, windy in the north. Prolonged rain arrives into south Scotland from midday, spreading into north England with time, and later Wales.
Headline for Brecon Beacons
Morning rain breaks for weak sun; breezy later
How windy? (On the summits)
Westerly 20 to 25mph, may ease for a few hours, but strengthening later afternoon, shifting southwesterly, speeds to 30-35mph as dusk approaches, strengthening further for several hours after dark.
Effect of the wind on you?
Fairly small much of the day. Ease of walking becomes affected from later afternoon, perhaps more strenuous conditions in exposure into nighttime.
How Wet?
Early and late showery rain, otherwise dry
Rain from overnight may continue for a few early hours, but soon breaking up to leave only spotty showers, fading for dry hills. Showery return to the west later in the day, becoming frequent for several hours around/after nightfall.
Cloud on the hills?
Lifting to tops with breaks
Early varied cloud over the hills, lifting during morning to mostly patches over higher tops, breaks best east & mid Wales; more frequent for periods Pen-y-Fan west above 700m, but likely more widely clear for several afternoon hours. Patches return to high western terrain into evening.
Chance of cloud free summits?
Rising to 70% afternoon
Sunshine and air clarity?
Glimpses of sun mainly east Wales, increasingly afternoon though high cloud too. A slight haze, particularly southwest, visibility reduced in rain.
How Cold? (at 750m)
9 or 10C, rising a degree. Later in the day, felling just above freezing in direct wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Tuesday 8th September 2026
Last updated
Sun 6th Sep 26 at
4:18PM
How windy? (On the summits)
Westerly 20-30mph, tending to strengthen later, gusts to 40mph over high tops.
Effect of the wind on you?
Blustery in exposure much of the day, trending towards more strenuous conditions later with a rising wind chill.
How Wet?
Scattered showers
Showers come and go from the northwest through the day, generally on the lighter side, many east hills often dry. Rising risk of more frequent showers with local heavy falls as afternoon goes.
Cloud on the hills?
Breaking off the summits
Varied banks of cloud above middle slopes early, most extensive west (particularly coastal Cambrians), lifting through 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, best on low eastern slopes. Good visibility though some 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
Sun 6th Sep 26 at
4:18PM
How windy? (On the summits)
Northwesterly 25-30mph to start, easing and shifting westerly, 15mph afternoon, and later less.
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
A deck of cloud shrouds 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.
Planning Outlook
Generally unsettled through next 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. An unsettled weekend is indicated, followed by a rising chance of longer settled windows from mid-month, particularly England and Wales. Temperatures will be generally near or above average, best sunny windows east hill groups.