Includes all higher summits in the southern half of Wales: the Bannau Brycheiniog / Brecon Beacons National Park, southern Cambrian Mountains and highest Preseli hills.
Brecon Beacons
Saturday 17th May 2025
Last updated
Fri 16th May 25 at
3:55PM
Strong sunshine for the Highlands, Lakes and much of Wales all day; beware sunburn. Cloudy for the Pennines to the Borders in the morning, gradually dispersing to give sunshine into afternoon; feeling cool here with a fresh NE'ly breeze, strong and gusty in the morning. Warmest in western Scotland.
Largely sunny, cool start, becoming fairly warm. Gusty in places.
East to northeasterly 10-20mph, strongest around dawn and dusk. Notable gusts on high terrain and downslope in the south for a time, up to 25mph.
Fairly small though often gusty, perhaps some stability challenges in strongest gusts.
No rain
None west, soon clear east
Patches of cloud on some eastern slopes early in the day, soon all dispersing.
Above 90%
Extensive strong sunshine after early cloud disperses in east. Soon excellent visibility.
8C, rising to 13C
Above the summits
Brecon Beacons
Sunday 18th May 2025
Last updated
Fri 16th May 25 at
3:55PM
North-northeasterly 10-15mph.
Negligible
Little or none
Small chance toward evening of an isolated shower inland.
Not expected
Above 90%
Extensive warm sunshine. Some high cloud builds later in the day. Excellent visibility.
9C rising to 13C
Above the summits
Brecon Beacons
Monday 19th May 2025
Last updated
Fri 16th May 25 at
3:55PM
Easterly 15 to 20mph, in places gusty 25mph, mainly morning.
Fairly small, but feeling chilly where exposed especially morning, gusts may make walking uncomfortable locally.
Risk showery rain, possible thunder
An odd spot of rain from time to time, locally a heavier burst. Some uncertainty, but may develop later in day widely into slow-moving areas of showery rain, chance of an isolated thunderstorm; hit and miss.
Only if rain occurs later
If showers occur, cloud banks forming and lowering onto tops, patches may form in places to lower elevations for periods.
90%
Sunshine best in morning, cloud bubbling up during the day, may fill in later inland. Visibility excellent.
7C rising to 12C afternoon; lowering a few degrees if showers develop.
Above the summits
High pressure remains to the north into early next week, easterly breezes prevailing. A few showers are possible mainly England and Wales. Warm sunshine most abundant in western Scotland. A change in the weather pattern is expected from midweek as pressure generally falls, bringing a greater risk of showers or areas of rain - a more unsettled outlook onward into next weekend with cooler temperatures, often stronger winds and cloud shrouding the hills for periods. In the short-term, ground conditions remain extensively dry, water courses are very low and the fire risk is very high.