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
Friday 11th July 2025
Last updated
Thu 10th Jul 25 at
4:08PM
Sunny and very warm across most areas with light or negligible wind - beware risk of sunburn and dehydration. Warm temperatures will persist overnight. Temperatures nearer the middle teens on Scotland's west coast in the breeze, some early patchy cloud onto Skye and coastal slopes to the south.
Sunny and very warm, staying warm into night
Light winds with variable direction. Into nighttime, wind generally shifts easterly with breezes up to 15mph.
Negligible.
Very likely dry
Remote risk of isolated late-afternoon showers, particularly east Cymru/Wales. Dry otherwise.
No cloud expected
Almost certain
Widespread sunshine, only patchy fair weather cloud building later; beware sunburn and dehydration. Excellent visibility; some haze eastern Cymru/Wales.
19C, rising to 22 to 24C, warmest in the eastern Bannau Brycheiniog/Brecon Beacons NP and the Black Mountains.
Well above the summits. (Remaining warm on high ground overnight.)
Brecon Beacons
Saturday 12th July 2025
Last updated
Thu 10th Jul 25 at
4:08PM
Southeasterly 15mph or less on the Cambrian Mountains and near Cardigan Bay. Light and variable elsewhere.
Small or negligible.
Very likely dry
Remote risk of isolated thunderstorms in the late afternoon or early evening. Otherwise, dry all day.
Cloud not expected
Almost certain
Widespread strong sunshine; beware sunburn, dehydration and heatstroke. Low level haze, but excellent visibility on high ground.
19C rising to 23C by mid-afternoon, remaining mild overnight on high ground.
Well above the summits. (Valley temperatures approaching 30 to 32C in the afternoon, hottest east Wales.)
Brecon Beacons
Sunday 13th July 2025
Last updated
Thu 10th Jul 25 at
4:08PM
East to southeasterly 15-20mph. Shifting southerly later in the day.
Fairly small.
Little or no rain
Small chance of fleeing local spots of light rain later in the day.
No cloud expected
Above 90%
A widely sunny morning, patchy cloud building and increasingly blocking sun. Excellent visibility.
17C rising to 20C
Above the summits
Very warm or hot conditions this weekend in the mountains and the valleys, with extreme risk of wildfire in Scotland; beware dehydration and sunburn. Light winds and very little cloud. Low pressure returns late Sunday into Monday bringing rain to most, risk heavy or thunderstorms north England and Scotland. Temperatures will cool towards average and often raining for the first half of the week. Becoming more mixed from mid-week as pressure goes slack and Atlantic fronts make only weak pushes from the west. Patchy rain and cloud will come and go with the best opportunities for sun in north and western areas.