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.
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.
Click an icon for more information or click here for a key to all icons.
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.
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
Thursday 3rd September 2026
Last updated
Wed 2nd Sep 26 at
4:30PM
Summary for all mountain areas
Strong to gale-force winds over high terrain. A lot of cloud, shrouding all western hills, plus patchy rain and drizzle, becoming heavier persistent falls in the west later; a swathe of more intense rain develops for southwest Scotland into northwest England by evening, later into north Wales.
Headline for Brecon Beacons
Windy, cloudy with drizzly rain.
How windy? (On the summits)
Southwesterly 20-35mph, trending towards lower speeds for a time but then a swathe of strong wind arrives late, 50-60mph.
Effect of the wind on you?
Walking impeded in exposure, feeling chilly, effecting easing somewhat but significantly deteriorating into night.
How Wet?
Drizzle and light rain
Some drizzle on high tops early, this fading, with patchy rain coming and going much of the day toward west; some dry windows as well, best in east. Heavier rain arrives onward into night, setting in with time from northwest.
Cloud on the hills?
Fairly extensive, improving trend east
Hills extensively shrouded to low slopes to start, a gradual lifting trend, mostly northern slopes near Brecon to east-mid Wales, some chance of breaks towards tops for a few hours. Cloud will tend to fill in more widely later, extensive to low southwestern slopes.
Chance of cloud free summits?
20% rising to 60% for a time east.
Sunshine and air clarity?
A few bright glimpses mainly in east, but more often overcast. Locally good visibility where cloud lifts, more often poor to the south and west.
How Cold? (at 750m)
14C much of the day, later beginning to rise, approaching 16C into night; quite humid. Feeling like 4 to 6C in direct wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Friday 4th September 2026
Last updated
Wed 2nd Sep 26 at
4:30PM
How windy? (On the summits)
West-southwesterly 35 to 50mph, stronger gusts to 60mph at times highest tops, mostly around or just after dawn.
Effect of the wind on you?
Arduous walking conditions, frequent buffeting knocking you off balance on exposed terrain. Considerable wind chill.
How Wet?
Early rain clears to local light showers
Overnight rain continues from dawn into the early morning, heavy falls for a few hours, leaving things wet underfoot. Rain tends to clear southwards, but may leave a legacy of drizzle and some light showers western Cambrians.
Cloud on the hills?
Fairly extensive, then lifting to tops
Shrouding hills widely during early rain, may persist over hills for a few hours, but base tending to lift and breaks forming toward upper slopes or above with time. Patches may come and go on higher western tops all day.
Chance of cloud free summits?
20% rising to 60%
Sunshine and air clarity?
Cloudy start, brighter skies develop, a little sun later as high cloud thins. Poor visibility in early rain, improving to be very good as the day goes on.
How Cold? (at 750m)
10C or above at dawn, dropping to 8C. Directly in wind feeling like 0 to -3C.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Saturday 5th September 2026
Last updated
Wed 2nd Sep 26 at
4:30PM
How windy? (On the summits)
Westerly 25mph at dawn, easing during morning to 15mph or less, turning SW'ly; tending to rise again later, risk 30mph.
Effect of the wind on you?
Feeling cool in early breeze, but soon mostly small. Becoming blustery again later in day.
How Wet?
Rare light rain west
Chance of a drizzly shower west Cambrians early in day. During afternoon, chance of some rain extending in from southwest.
Cloud on the hills?
Mostly clearing
Patchy cloud over some slopes above 700m early morning. Lifting above the summits by mid-morning; some patches may return in west if rain occurs.
Chance of cloud free summits?
70%
Sunshine and air clarity?
A little sun soon weakening as high cloud builds then thickens across the sky. Visibility very good.
How Cold? (at 750m)
8C rising to 11C afternoon, little change or rising a degree or so higher evening/night. Feeling like 2C in wind at first.
Freezing Level
Above the summits.
Planning Outlook
A series of weather systems moves in from the Atlantic over the next 10 days to bring spells of rain and showers, accompanied by frequently strong to gale force mountain winds. A window of better weather is likely on Saturday for Scotland and northern England, but further rain is expected to move in from the southwest by Saturday night and Sunday, heaviest western Scotland; a risk of more powerful upland gales developing over Scotland into Sunday. Temperatures will vary, mildest toward the south, but some cooler air moves in from the north at times bringing higher Scottish tops close to freezing point.