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.
Wednesday's Forecast
Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
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Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Viewing Forecast For
Brecon Beacons
Wednesday 19th August 2026
Last updated
Tue 18th Aug 26 at
4:27PM
Summary for all mountain areas
Slow-moving showers across Scotland, trending more frequent and heavy afternoon with thundery downpours; light wind but gusty around showers. Showers in England, most frequent and heavy early and into night in northern areas with thunder risk. Scattered showers and sun in Wales on a westerly wind.
Headline for Brecon Beacons
Scattered showers from the west; breezy over tops and gusty
How windy? (On the summits)
Southwesterly 20 to 25mph, breezes occasionally strengthening towards or above 30mph over the high tops but unlikely sustained for any periods of time.
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, more scattered eastward. A window of less frequent showers is likely in the afternoon, but shower return more frequently late in the day.
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, breaks forming off the tops, but patches returning to highest summits and high southern slopes.
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 good.
How Cold? (at 750m)
8 to 10C, coolest west in morning; rising up to 13C easternmost hills. Feeling close to freezing directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Thursday 20th August 2026
Last updated
Tue 18th Aug 26 at
4:27PM
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 showers, some heavy
Rain mostly west in the morning, developing more widely into heavy showery rain; some risk of thundery bursts, most notably eastern hills.
Cloud on the hills?
Capping tops for periods, variably lower
Varied cloud banks above 700-800m, likely to come and go on tops, some lower patches around rain and in the west, and may become more extensive for several hours later in the day.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Glimpses of sun, periods of more extensive high cloud. 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.
Viewing Forecast For
Brecon Beacons
Friday 21st August 2026
Last updated
Tue 18th Aug 26 at
4:27PM
How windy? (On the summits)
Northerly but variable, 10mph and often less, but tending to strengthen with time, particularly western hills.
Effect of the wind on you?
Negligible.
How Wet?
Most rain west, some showers
Western hills often under rain, particularly the Cambrians and Preseli hills. Drier windows towards the east, but some areas of rain will drift here at times, with a risk of showers for several afternoon hours.
Cloud on the hills?
Patches over tops, mostly west
Patchy cloud often affecting high western terrain, a few breaks here and there between bursts of rain. Further east, some varied patchy cloud at varied heights in the morning, but substantially lifting to clear off the hills, only an odd patch over high tops where showers occur.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Glimpses of sun. Good visibility.
How Cold? (at 750m)
8 to 10C.
Freezing Level
Above the summits.
Planning Outlook
As the weekend approaches, wind will shift northerly, moving showers and afternoon thundery downpours further south with time. Generally lighter wind but gusts will be common around showers. Temperature lowering later this week too, dropping close to freezing on high Scottish tops on Friday morning (chance of sleet/snow here) and frost may occur in Highland glens over a couple of nights. More often dry with few lighter showers over the weekend as higher pressure builds into the southwest. Conditions remain on the drier, brighter side early next week, pressure dropping again as the week goes: periods of cloud and rain for most hill groups, and perhaps some stronger wind at times. Detail beyond the weekend is uncertain, and there may well be windows of better weather through the week too.