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.
Thursday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
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.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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.
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.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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
Thursday 18th June 2026
Last updated
Wed 17th Jun 26 at
4:05PM
Summary for all mountain areas
Rain and low cloud affects many mountains, most persistent in the west, patchier and lighter for the Highlands by afternoon. A band of heavier rain for northern England and southwest Scotland, risk some thundery bursts. Blustery southwesterly winds. Feeling humid particularly for England and Wales.
Headline for Brecon Beacons
Windy. Drizzly rain and low cloud west & southwest.
How windy? (On the summits)
South-southwesterly 25 to 35mph, typically strongest western Beacons to Cambrians, but widely gusty, in places over 40mph.
Effect of the wind on you?
Strenuous walking conditions over the hills, gusts affecting balance on some exposed high tops. Feeling cool in exposure.
How Wet?
Drizzly rain much of day west
Generally damp west, some more persistent steady rain Preseli hills to western Cambrians. Drizzly over much of Brecon Beacons, smaller amounts eastward, locally more often dry.
Cloud on the hills?
Extensive, lowest southwest
Shrouding the hills throughout the day, from lower slopes up in south and west, particularly near coasts. Rarely above 500-600m inland, local breaks east Wales.
Chance of cloud free summits?
Below 10%
Sunshine and air clarity?
Largely cloudy, dull. Misty to lower levels toward southwest, local better visibility below cloud east.
How Cold? (at 750m)
11C rising to 13C, locally warmer eastern areas afternoon, quite humid. Feeling nearer 0C directly in wind on tops.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Friday 19th June 2026
Last updated
Wed 17th Jun 26 at
4:05PM
How windy? (On the summits)
South-southwesterly, 35 to 45mph all day, peak gusts vary, risk 60mph for periods highest tops, may lessen later.
Effect of the wind on you?
Strenuous to arduous walking conditions, gusts starting to affect balance in exposure. Marked wind chill.
How Wet?
Risk thundery bursts developing
Early patchy rain in far west, or spots from high cloud inland/east, but several hours largely dry. Increasing risk with time of heavy bursts of rain forming, possibly torrential. Risk of thunder.
Cloud on the hills?
Varied, most persistent west
Covering many hills from dawn, to lower slopes especially southwestern hills and coasts, here likely to persist. Some rise of base inland, breaks best eastward. Filling in with ragged low patches in rain.
Chance of cloud free summits?
20% west, 60% east.
Sunshine and air clarity?
Some sun east, weak through high cloud, more overcast at times, especially west. Visibility good east, hazier west/southwest; reducing widely around rain.
How Cold? (at 750m)
Humid 13 to 15C, tending to drop from west later in day, by evening-night to 9C. Feeling nearer freezing in wind all day.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Saturday 20th June 2026
Last updated
Wed 17th Jun 26 at
4:05PM
How windy? (On the summits)
Southwesterly 15 to 20mph, tending to ease during day.
Effect of the wind on you?
Increasingly small.
How Wet?
Little or no rain
Chance of an odd drizzly shower mainly west Cambrians early in day, fading to become dry.
Cloud on the hills?
Lowest in west and in morning
Covering west and southwestern hills early in the day, to mid or some lower slopes for a time. Patchier higher cloud east. Bases rising, tending to thin and break, likely to clear most or all tops in afternoon.
Chance of cloud free summits?
20% rising to 80% afternoon
Sunshine and air clarity?
Misty and largely cloudy start, improving with some sun breaking through a veil of high cloud. Visibility becoming very good.
How Cold? (at 750m)
9C rising to 12C afternoon.
Freezing Level
Above the summits.
Planning Outlook
Humid southwesterly winds, gales across many mountains on Friday, plus heavy rain, thundery bursts mixed in. Less windy, but still breezy into Saturday in Scotland, feeling less humid for most, but western Scottish hills at least stay cloud capped and with showery rain. Sunday is a drier day with clearer hills, light winds and feeling warmer. Into next week, a mixed west-southwesterly pattern for Scotland, rain and low cloud most common in the west, drier with higher cloud eastwards and more often dry. Warm and humid for England & Wales - often dry, but possible thunderstorms forming at times - detail more uncertain.