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
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Warm
Comfortable temperatures on the hills, 10 to 15C 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
Tuesday 18th August 2026
Last updated
Mon 17th Aug 26 at
4:25PM
Summary for all mountain areas
Fresh-to-strong westerly breezes bring frequent showery rain and drizzle to western Scotland all day, plus patchy rain western England and Wales in the morning, here becoming drier until rain returns by evening. All western tops often in cloud. Some showery rain extends east across the Highlands.
Headline for Brecon Beacons
Blustery, a little rain in morning, cloud rising from most tops.
How windy? (On the summits)
Westerly 20 to 30mph, strongest sustained speeds and very gusty early in the day.
Effect of the wind on you?
Affecting comfortable walking on higher terrain, for a time more challenging in exposure. Marked wind chill.
How Wet?
Early patchy rain fades
Rain from overnight continues on and off beyond dawn, but fades to brief light showers, often dry by middle of day onward. Late evening onward, more persistent rain returns from southwest.
Cloud on the hills?
Low cloud lifting, some breaks
Early low cloud banks soon rising and breaking toward higher slopes, but may come and go above 800m, higher breaks more often above eastern tops.
Chance of cloud free summits?
30% rising to 70%
Sunshine and air clarity?
Fairly cloudy, some sun mostly east. Visibility becoming very good below cloud.
How Cold? (at 750m)
11 to 13C, trending cooler later in day. Feeling like 3 to 5C in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 19th August 2026
Last updated
Mon 17th Aug 26 at
4:25PM
How windy? (On the summits)
Southwesterly 20 to 30mph, tending to increase later in day.
Effect of the wind on you?
Breezy over high terrain, affecting comfortable walking at times, risk buffeting more often later; feeling rather cool.
How Wet?
Showers
Showery rain most frequent in western areas in the morning, but scattered mostly light showers passing eastwards during the day, an odd heavier fall briefly locally.
Cloud on the hills?
Lifting with breaks to tops
Covering many western tops above 600-800m in the morning; base tending to rise, breaks forming toward upper slopes, brief patches grazing higher tops.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Sun mostly east in the morning, otherwise often cloudy; some sun later near coast. Visibility mostly very good.
How Cold? (at 750m)
8 to 10C, coolest west in morning. Feeling close to freezing directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Thursday 20th August 2026
Last updated
Mon 17th Aug 26 at
4:25PM
How windy? (On the summits)
Westerly turning northerly, speed likely varying 10 to 25mph.
Effect of the wind on you?
Fairly small for periods, but feeling noticeably cool if exposed to fresher breeze on tops.
How Wet?
Frequent rain, some heavy
Rain mostly west in the morning, developing more widely into heavy showery rain, possibly thundery.
Cloud on the hills?
Capping tops for periods
Varied cloud banks above 700-800m, likely to come and go on tops, some lower patches around rain and in the west.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Mostly cloudy, rare sun breaking through. Visibility good at times, but poor in rain.
How Cold? (at 750m)
9 to 11C. Feeling like 2 to 5C in stronger wind.
Freezing Level
Above the summits.
Planning Outlook
Low pressure dominates across Britain into midweek, bringing showery conditions widely, some more organised bands of rain at times. Some heavy and thundery downpours forming, mostly into the afternoons, becoming focused further south with time. Fresh westerly winds turning northerly and temperature lowering later this week, dropping close to freezing on high Scottish tops by Friday and frost may occur in Highland glens over a couple of nights. More often dry with rare lighter showers over the weekend as higher pressure builds. Strengthening south-southwesterly winds into early next week with a risk of rain returning from the west, but warmer temperatures are likely.