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
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.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
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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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.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
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 1st September 2026
Last updated
Mon 31st Aug 26 at
4:27PM
Summary for all mountain areas
A swathe of rain and gales sweeps across the Scottish Highlands, moving over the Southern Uplands with time; bright sun breaks and scattered showers follow from the northwest. Patchy rain for western hills of England and Wales, sunny breaks east. Blustery with rain increasing later in north England.
Headline for Brecon Beacons
Occasional patchy rain; dry windows, cloud base lifting somewhat
How windy? (On the summits)
West to southwesterly 15 to 20mph, occasionally rising to 25mph.
Effect of the wind on you?
Fairly small.
How Wet?
Damp at times
Patchy drizzle and light rain comes and goes. Most rain will affect western hills, but a few clusters of light showers will spread east as well.
Cloud on the hills?
Varied, often shrouding high terrain
Banks of cloud often cap higher slopes above 600 to 800m, lowest and most persistent in western areas. Some breaks toward upper slopes in east Wales, and perhaps some windows of breaks towards summits, but always a risk of bank returning across high terrain.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Patchy sunshine, some extended sunny windows but high cloud will thicken, some cloudier moments too. Visibility often good below cloud, but reduced if in rain.
How Cold? (at 750m)
10C rising to 12C, or less rise south and west slopes.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 2nd September 2026
Last updated
Mon 31st Aug 26 at
4:27PM
How windy? (On the summits)
Southwesterly 30-35mph, gusty over the tops, and strengthening for a time, gusting up to 45-50mph.
Effect of the wind on you?
Walking impeded in exposure, more strenuous moments with buffeting affecting balance; feeling chilly.
How Wet?
Rain into drizzle
Several hours of morning rain, briefly heavy. Rain will ease into patches and later drizzle, tending to fade but staying damp on high tops. A few scattered patches may linger well into the day.
Cloud on the hills?
Extensive
Cloud soon fills in extensively from 600m upward, often lower around rain, widely to 400m and lower on south slopes during extended rain. As rain eases, bases will variability lift, may locally break up a bit on north slopes but also returning lower.
Chance of cloud free summits?
20%
Sunshine and air clarity?
A few bright glimpses in the morning, but soon overcast and dull with poor visibility.
How Cold? (at 750m)
11 to 14C, trending towards the higher end of the range and staying warm into night. Feeling like 3 to 6C in strongest wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Thursday 3rd September 2026
Last updated
Mon 31st Aug 26 at
4:27PM
How windy? (On the summits)
Southwesterly 20-35mph, trending towards lower speeds for a time but then a swathe of strong wind arrives late, above 50mph.
Effect of the wind on you?
Walking impeded in exposure, feeling chilly, effecting easing somewhat but significantly deteriorating into night.
How Wet?
Some patchy rain
Some drizzle on high tops early, this fading, with patchy rain coming and going much of the day, some dry windows as well.
Cloud on the hills?
Fairly extensive, improving trend
Hills extensively shrouded to low slopes to start, a gradual lifting trend, mostly northern slopes and some chance of breaks towards tops for a few hours. Cloud will tend to fill in more widely later, extensive to low southern slopes.
Chance of cloud free summits?
Rising to 60% for a time.
Sunshine and air clarity?
A few bright glimpses but more often overcast. Locally good visibility where cloud lifts, more often poor to the south.
How Cold? (at 750m)
14C much of the day, later beginning to rise, approaching 16C into night. Feeling like 4 to 6C in direct wind.
Freezing Level
Above the summits.
Planning Outlook
Strong wind (often gale force on high mountains), patchy rain, and some broader swathes of rain and wind will affect the country from mid-week into the weekend; most notable areas of rain on Wednesday and late Thursday overnight into Friday. A few bright glimpses here and there, but many high summits stay shrouded, particularly western hill groups where cloud will often reach lower slopes. A brief bright window for some on Saturday, but staying windy with scattered showers in northwest areas, rain returning later and into Sunday. The next week remains generally unsettled, and may well bring a deep low pressure systems with widespread gales and swathes of heavy rain. Beyond next week, indications of a more settled regime for a time.