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
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Clear
Excellent or superb visibility, no navigation issues.
Hot
Heatwave conditions. Very high temperatures, rising to 20C+ on high tops, approaching 30C in some valleys. Beware of heat stroke and dehydration. Carry plenty of liquid.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
Click an icon for more information or click here for a key to all icons.
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Clear
Excellent or superb visibility, no navigation issues.
Hot
Heatwave conditions. Very high temperatures, rising to 20C+ on high tops, approaching 30C in some valleys. Beware of heat stroke and dehydration. Carry plenty of liquid.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
Viewing Forecast For
Brecon Beacons
Tuesday 26th May 2026
Last updated
Mon 25th May 26 at
4:30PM
Summary for all mountain areas
Low cloud and early drizzle in northwest Scotland, improving with cloud thinning and breaking, but staying cool toward the far north. Very warm and sunny for England and Wales. Chance of isolated late heavy showers forming, but mostly dry.
Headline for Brecon Beacons
Very warm, sunny, chance a late shower. Light wind.
How windy? (On the summits)
Varying in direction, 5-10mph or less; locally up to 15mph some coastal hills where sea breezes develop.
Effect of the wind on you?
Mostly negligible
How Wet?
Chance isolated afternoon thunderstorm
Very likely dry, but risk of cloud bubbling up in the afternoon to give an isolated late shower, but should they occur, a slow-moving heavy burst or thunderstorm possible by early evening.
Cloud on the hills?
Mountains clear
Chance of cloud free summits?
Practically certain
Sunshine and air clarity?
Widespread sunshine, but areas of cloud will bubble up in the afternoon. Visibility mostly good, but marked haze.
How Cold? (at 750m)
20 to 23C, very humid. Valley temperatures rising toward 29C.
Freezing Level
Well above the summits
Viewing Forecast For
Brecon Beacons
Wednesday 27th May 2026
Last updated
Mon 25th May 26 at
4:30PM
How windy? (On the summits)
Southeasterly 15 to 25mph, but up to 35mph at times as marked gusts develop, with highest gusts not always on tops.
Effect of the wind on you?
Blustery and increasingly gusty, with the highest wind gusts not necessarily over the higher slopes.
How Wet?
Substantially or completely dry
Perhaps the odd burst of showery rain possible later in the day, mainly southwest Wales and running up the west coast.
Cloud on the hills?
Some early cloud, clearing
Early patchy low cloud, mainly east Wales, will lift and break off the hills, to leave all areas clear by midday. Western mountains clear all day.
Chance of cloud free summits?
90%, but 50% east Wales morning.
Sunshine and air clarity?
Patchwork of sunshine, increasingly sunny with thin high cloud, but may thicken later. Visibility good, but marked haze.
How Cold? (at 750m)
16 to 19C.
Freezing Level
Well above the summits
Viewing Forecast For
Brecon Beacons
Thursday 28th May 2026
Last updated
Mon 25th May 26 at
4:30PM
How windy? (On the summits)
South turning southwesterly, in range 25 to 35mph, gusty at first, then mean speed generally increasing afternoon.
Effect of the wind on you?
Blustery, affecting ease of walking and balance on exposed terrain. May become widely strenuous over the hills.
How Wet?
Dawn thundery bursts may all clear
Possible sporadic overnight thundery downpours ongoing through to dawn, may soon largely clear northeastward by early morning. Then more likely dry, but some fine drizzle especially west Wales.
Cloud on the hills?
Varied, may fill in western hills
Ragged patches over hills at varied elevations during and just after rain for a time in morning, likely to lift and clear. During afternoon, low cloud may roll in from coast over many hills in west Wales.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Varied sun and high cloud, more overcast skies likely for a time, mainly early in day. Rather hazy, poorer visibility if in rain; may improve for a time, risk mistier later west.
How Cold? (at 750m)
15 to 17C.
Freezing Level
Well above the summits.
Planning Outlook
Very warm air extends into Scotland during midweek on southerly winds. Isolated bursts of rain form, greater risk toward Wales by Wednesday night, then drifting variably northward during Thursday daytime - some uncertain local detail and timing, but scattered thunderstorms are possible by this time. Winds also strengthening and becoming very gusty. Some rain in western Scotland by Thursday night which may linger into Friday here on westerly winds, but a fine end to the week for many places. Further rain and low cloud likely returns to western Scotland over the weekend, possible showers elsewhere. A more unsettled west-southwesterly pattern is likely into early June, cooler with rain and stronger winds for periods.