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.
Today'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.
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.
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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.
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
Saturday 12th July 2025
Last updated
Fri 11th Jul 25 at
4:00PM
Summary for all mountain areas
Hot everywhere, rising to 30C in valleys widely by early afternoon, slightly cooler easternmost areas. Unbroken sunshine dawn til dusk. Light winds, though breezier west coast of Scotland, particularly on islands. Very dry ground conditions - high fire risk.
Headline for Brecon Beacons
Hot sunshine. Increasing breeze.
How windy? (On the summits)
Southeasterly 15mph or less. Rising towards easterly 20mph by evening.
Effect of the wind on you?
Small, but feeling breezier later.
How Wet?
Very likely dry
Very remote risk of an isolated shower by early evening toward Pembrokeshire. Otherwise, dry all day.
Cloud on the hills?
Cloud not expected
Chance of cloud free summits?
100%
Sunshine and air clarity?
Widespread strong sunshine; beware sunburn, dehydration and heatstroke. Low level haze, but excellent visibility on high ground.
How Cold? (at 750m)
19C rising to 23C by mid-afternoon, remaining warm overnight on high ground.
Freezing Level
Well above the summits. (Valley temperatures approaching 30 to 32C in the afternoon, hottest east Wales.)
Viewing Forecast For
Brecon Beacons
Sunday 13th July 2025
Last updated
Fri 11th Jul 25 at
4:00PM
How windy? (On the summits)
East to southeasterly 15-20mph. Shifting southerly later in the day.
Effect of the wind on you?
Fairly small.
How Wet?
Little or no rain
Local spots of rain from thickening high cloud later in the day. Then into night, possibility of thundery rain developing.
Cloud on the hills?
Hills clear
Chance of cloud free summits?
Above 90%
Sunshine and air clarity?
A widely sunny morning, patchy cloud building and increasingly blocking sun. Excellent visibility.
How Cold? (at 750m)
17C rising to 20C
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Monday 14th July 2025
Last updated
Fri 11th Jul 25 at
4:00PM
How windy? (On the summits)
South turning southwesterly, strengthening 20 to 30mph, risk 35mph with stronger gusts afternoon-evening.
Effect of the wind on you?
Increasingly affecting comfortable walking on exposed terrain, buffeting gusts.
How Wet?
Thunderstorms likely
Heavy rain, torrential bursts and possible thunderstorms from before dawn. May break up and clear north, but risk of scattered heavy showers and isolated thunderstorms onward into afternoon.
Cloud on the hills?
Early cloud tending to clear
Varied low cloud in morning tending to lift to upper slopes, clearing tops away from showers in afternoon, but returning with patches to low levels in showers.
Chance of cloud free summits?
30% rising to 70% afternoon.
Sunshine and air clarity?
Overcast in rain, hazy or murky for a time. Improving visibility with some sun breaking through for periods.
How Cold? (at 750m)
11C, to 13C in east, fairly humid start, dropping slightly to a much fresher 9C later in day.
Freezing Level
Above the summits
Planning Outlook
Lowering pressure from southwest late Sunday into Monday bringing increasing risk bursts of rain and thunderstorms to start the new week, strong and gusty southerly winds. Temperatures will cool towards average. Pressure goes slack and winds fall light into midweek. A risk of heavy rain moving across England and Wales in particular on Tuesday. Low pressure is likely to be more common in the extended outlook with slow-moving areas of showery rain, some thundery bursts locally, interspersed with drier days.