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.
Sunday's Forecast
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Dry and sunny
Extensive strong warm sunshine. The mountains free of cloud once any early mist patches disperse.
Warm
Comfortable temperatures on the hills, 12 to 16C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
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Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Dry and sunny
Extensive strong warm sunshine. The mountains free of cloud once any early mist patches disperse.
Warm
Comfortable temperatures on the hills, 12 to 16C 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
Sunday 10th August 2025
Last updated
Sat 9th Aug 25 at
4:00PM
Summary for all mountain areas
Dry for most places all day, but the west coast of Scotland is likely to hold onto low cloud and some drizzle, mainly around Skye. More persistent rain develops into the evening in western Scotland. Elsewhere, cloud banks lifting above most summits, some sunshine. A fresh southwesterly breeze, increasing later.
Headline for Brecon Beacons
Moderate breeze. Dry and warm, hills clearing.
How windy? (On the summits)
Southwest then southerly 5 to 10mph, at times 15mph Cambrians.
Effect of the wind on you?
Small
How Wet?
Rain not expected
Cloud on the hills?
Local patches clearing
Varied banks of cloud around some slopes, fairly widely in west Wales from dawn, some high tops may start near top of cloud layer, but then lifting to cap hill tops for a few hours, breaking above most hills midday into afternoon.
Chance of cloud free summits?
50% rising to 90%
Sunshine and air clarity?
Patchwork of cloud and sun. Visibility increasingly very good.
How Cold? (at 750m)
10C rising to 14C afternoon, rising slightly higher evening onward.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Monday 11th August 2025
Last updated
Sat 9th Aug 25 at
4:00PM
How windy? (On the summits)
South to southeasterly 10 to 15mph, may reach 20mph western hills, risk strengthening further from dusk.
Effect of the wind on you?
Mostly small during daytime.
How Wet?
Rain unlikely most of day
Chance of odd spots developing later as high cloud thickens. Small risk a local burst of rain in evening. Greater risk of thundery bursts into the night.
Cloud on the hills?
Likely clear
Chance of some coastal mist locally, but the mountains likely clear.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Sun and high cloud, visibility good, but some haze.
How Cold? (at 750m)
15C from dawn, rising to 18C by midday, 21C later afternoon; then little change into evening-night; feeling humid.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Tuesday 12th August 2025
Last updated
Sat 9th Aug 25 at
4:00PM
How windy? (On the summits)
South-southeasterly, switching southwesterly later; 15 to 25mph, may reach gusty 30mph for a time.
Effect of the wind on you?
Fairly small, though varied, gusts may affect comfortable walking occasionally.
How Wet?
Chance of thundery showers
Largely dry, but isolated bursts of rain may occur - even from early in the day - chance of very hit and miss thundery downpours. Scattered bursts possible again afternoon.
Cloud on the hills?
Little if any
The hills largely clear, but locally if a shower occurs, patches may form at various heights for a time. Later risk of coastal fog lapping inland from the southwest to cover some hill slopes.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Varied high cloud covering the sky, may become increasingly sunny. Rather hazy.
How Cold? (at 750m)
19 to 23C.
Freezing Level
Above the summits
Planning Outlook
A front moves affects Scotland into Monday with rain, drizzle and low cloud, also damp and misty at least on Monday morning for the Lakes. Very warm and humid over England and Wales in the first half of the week, but this comes with a risk of thundery bursts of rain drifting northeastwards. Warm and humid air briefly extends across Scotland through Monday and particularly Tuesday. Wednesday onward, southwesterlies prevail in Scotland, low cloud often covering western hills, but small amounts of rain. Higher pressure further south, staying mostly dry and warm England, Wales & S/E Scotland.