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.
Monday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Heavy rain
Near-constant heavy rain, sometimes torrential over the mountains, very wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Heavy rain
Near-constant heavy rain, sometimes torrential over the mountains, very wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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
Monday 1st June 2026
Last updated
Sun 31st May 26 at
4:00PM
Summary for all mountain areas
Rain affects all areas during the day, some heavy falls widely, most constant in Wales. Low cloud across the hills, blanketing to lower slopes in west coastal areas. South-southwest winds, varied in Scotland, but stronger England and particularly Wales, here gales over tops. Fairly mild air, but feeling cooler in wind.
Headline for Brecon Beacons
Windy, up to gales on tops. Prolonged heavy rain; low cloud.
How windy? (On the summits)
Southwesterly 25 to 35mph, strong gusts, generally rising speeds through morning, to 40mph, gusts toward 50mph high tops afternoon, possibly briefly stronger late afternoon, then tending to drop later evening into night.
Effect of the wind on you?
Challenging walking conditions all day, buffeting gusts affecting balance, more arduous conditions in afternoon on high terrain. Considerable wind chill.
How Wet?
Persistent rain sets in widely heavy
Patchy rain from before dawn soon becomes frequent, developing widely in morning for persistent steady rain, some prolonged heavy falls widely ongoing into afternoon and evening. Becoming very wet underfoot, streams rising rapidly, later in spate Brecon Beacons.
Cloud on the hills?
Extensive, lowest southwest
Cloud shrouds many hills from at least 500-600m up in the morning, a few odd breaks east-mid Wales, but filling in widely, covering hills from 300-400m up in south and west, rarely above 500-600m anywhere afternoon.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Overcast and dull. Visibility very poor in fog and rain, locally better if dry in east below cloud.
How Cold? (at 750m)
9 or 10C, rising a degree, locally to 12C Black Mountains. Feeling near to freezing in strongest wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Tuesday 2nd June 2026
Last updated
Sun 31st May 26 at
4:00PM
How windy? (On the summits)
Westerly 20 to 25mph, at times 30mph higher tops.
Effect of the wind on you?
Noticeable breeze, in places affecting comfortable walking on higher terrain.
How Wet?
Heavy locally thundery showers
Showery rain on and off from dawn in west, heavier bursts passing eastwards into middle of day, some continue afternoon, risk isolated thunder. Drier near Cambrian coast afternoon, some light showers later.
Cloud on the hills?
Varied, then clearing tops
Cloud banks most frequent over western tops in the morning, lifting toward then above many tops away from showers. Some patches likely return to western tops into evening.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Glimpses of sun, may become sunnier near west coast for a time afternoon. Visibility very good, reduced in showers.
How Cold? (at 750m)
9 to 11C. Feeling close to 0C if exposed to wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 3rd June 2026
Last updated
Sun 31st May 26 at
4:00PM
How windy? (On the summits)
South-southwesterly 35 to 50mph, risk stronger gusts higher tops.
Effect of the wind on you?
Strenuous to often arduous walking in exposure, buffeting gusts knocking you off balance. Considerable wind chill.
How Wet?
Rain and drizzle persistent
Rain extends in from the southwest, becoming fairly persistent, heaviest west Wales, drizzly even when heavier rain fades; occasionally easing off eastern areas.
Cloud on the hills?
Extensive
Blanket low cloud across the hills, from lower slopes up furthest south and west, especially coasts, rarely above 500-600m inland, highest bases east Wales.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Largely cloudy, dull, murky toward southwest in rain; hazy at best. Better visibility eastern hills below cloud.
How Cold? (at 750m)
8C, slight rise if not in cloud. Wind chill feeling like -5C.
Freezing Level
Above the summits.
Planning Outlook
An unsettled spell through early June, possibly through the first two weeks, as low pressure over the north Atlantic and southwesterly winds dominate. Periods of rain mixed with showery days widely - the most constant rain over western mountains with low cloud often shrouding the hills. Wind speed will vary, but up to gale-force for periods over the hills, mostly in Scotland by later this week. Higher pressure to the south tends to expand across and just east of Britain later in the week, bringing some drier weather, but western hills even in England and Wales may remain often misty and drizzly. Temperatures near average, cooler at times. Mid June onward shows signs of drier and warmer weather.