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.
Saturday'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.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
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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.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
Viewing Forecast For
Brecon Beacons
Saturday 12th September 2026
Last updated
Fri 11th Sep 26 at
4:29PM
Summary for all mountain areas
Severe gales from dawn on Scottish mountains ease during morning, moderate speeds by mid-afternoon, whilst gales continue on tops in England & Wales until later. An intense band of rain moves south, followed by still frequent rain, some showery bursts plus low cloud western hills. Drier later north Scotland.
Headline for Brecon Beacons
Increasingly windy, gales develop, rain persistent later.
How windy? (On the summits)
Southwesterly, rising during morning 25 to 40mph, reaching 50mph on high tops, soonest in mid-Wales, though slightly lower speeds and gusts furthest south. Speeds lowering gradually to 30mph evening.
Effect of the wind on you?
Increasingly strenuous walking conditions, strengthening gusts around high tops affecting balance, on exposed terrain in mid-Wales often more challenging. Marked wind chill despite mild air.
How Wet?
Rain develops from north during day, becomes heavier
Spots in the wind, but the south of the region sees little rain until into afternoon. Patchy rain for the Cambrians becomes steadier rain by mid-late morning, setting in for heavier falls by the afternoon. Rain increasingly spills southward to become persistent, heavier falls for Brecon Beacons later in the day and onward into night.
Cloud on the hills?
Varied, mostly west, lowering
Varied banks of cloud drift onto hills mostly in west, breaks to upper slopes for many hours in more eastern areas. Filling in and lowering with time from west, later blanketing most hills to mid-slopes.
Chance of cloud free summits?
50% dropping to 10%
Sunshine and air clarity?
Overcast, some brighter skies through high cloud in southeast in morning. Visibility good, but some haze, reducing in rain, later widely poor.
How Cold? (at 750m)
10C rising to 14C, quite humid. Feeling increasingly like 0C directly in wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Sunday 13th September 2026
Last updated
Fri 11th Sep 26 at
4:29PM
How windy? (On the summits)
West-northwest 20-25mph at dawn, easing during morning, to 10mph by middle of day, later SW'ly. Rising again by evening.
Effect of the wind on you?
Feeling chilly in a fresh breeze early morning, becoming small most of day.
How Wet?
Early rain clears south
Wet underfoot from overnight rain - remnants of rain may continue beyond dawn in southern areas. An odd drizzly shower on west coastal hills early in the day, otherwise likely dry.
Cloud on the hills?
Varied early cloud lifts and breaks
Patchy cloud mostly over western hills in the morning, some banks over western Cambrians to lower slopes for a time, well broken further southeast. Cloud lifts, but may come and go on western tops, often clearer in east.
Chance of cloud free summits?
50% west, rising to 80% east.
Sunshine and air clarity?
Variable sunshine and cloud, a veil of high cloud to south slowly thins; sunnier near coast afternoon. Visibility excellent.
How Cold? (at 750m)
10 to 12C, little change all day and night, warmest toward the east. Feeling like 3 to 5C in early wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Monday 14th September 2026
Last updated
Fri 11th Sep 26 at
4:29PM
How windy? (On the summits)
Southwesterly 30-40mph, speed likely rising, risk to 50mph, some notable strong gusts especially eastern downslopes.
Effect of the wind on you?
Frequent buffeting over the hills, very gusty in places affecting stability, not just highest terrain. Marked chill factor despite mild air.
How Wet?
Rain and drizzle, risk heavier bursts
Drizzle and light rain already fairly extensive from dawn, continuing onward throughout the daytime, steadier falls of rain over west & southwest hills. Possibly an isolated thundery burst forming.
Cloud on the hills?
Extensive very low cloud
Blanket cloud shrouding the hills, from lower slopes upward on south and western hills. Bases higher toward Brecon and the Black Mountains, but rare above 600m, local breaks mainly east-mid Wales.
Chance of cloud free summits?
Below 10%
Sunshine and air clarity?
Overcast and dull, misty or murky to lower slopes in west and south, local brighter areas toward east-mid Wales.
How Cold? (at 750m)
15C, humid, little change all day, then starting to lower into night. Feeling like 2 to 5C directly in the wind.
Freezing Level
Above the summits.
Planning Outlook
Staying unsettled with Atlantic lows dominating to the north; often windy, gale-force westerly winds for periods over higher terrain. Better weather this Sunday, then wind and rain returns into Monday, staying showery into Tuesday. A mixed outlook continues later next week with rain most frequent in western Scotland. Temperatures varying, some cooler days especially in Scotland, but often fairly mild further south, at times quite warm and humid. Higher pressure and better weather tends to expand further north later in month.