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.
Friday'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.
Hazy, some fog banks
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Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
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.
Hazy, some fog banks
Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
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
Friday 19th June 2026
Last updated
Thu 18th Jun 26 at
4:25PM
Summary for all mountain areas
A swathe of heavy rain extends across the Highlands, southern Scotland then into Cumbria and west Wales, some torrential bursts, thunder and lightning possible. A belt of gale-force upland winds just ahead of the rain. Warm and humid. Winds ease in western Scotland, rain fades, cloud lifts, dropping cooler.
Headline for Brecon Beacons
Windy, very gusty. Low cloud. Thundery rain later west.
How windy? (On the summits)
South-southwesterly, 30 to 40mph, some fluctuations throughout the day, peak gusts vary, risk over 50mph for periods highest tops. Lessening into evening.
Effect of the wind on you?
Strenuous to arduous walking conditions, gusts starting to affect balance in exposure. Marked wind chill on tops despite warm air.
How Wet?
Thundery bursts developing later west
Odd spots or brief pulses of rain form mainly western areas, but substantially dry in east much of day. Increasing risk later afternoon into evening of heavy bursts of rain developing from west, risk locally torrential thunderstorms.
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 later.
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, into night to 10C. Feeling nearer freezing in wind all day.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Saturday 20th June 2026
Last updated
Thu 18th Jun 26 at
4:25PM
How windy? (On the summits)
Southwesterly 15mph, possibly briefly 20-25mph around dawn; tending to drop variable below 10mph.
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?
Early low cloud clearing
Cloud banks on 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, clearing all tops into afternoon.
Chance of cloud free summits?
20% rising to 90% 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)
10C rising to 13C afternoon.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Sunday 21st June 2026
Last updated
Thu 18th Jun 26 at
4:25PM
How windy? (On the summits)
East to southeasterly or variable, often 10mph or less, occasional gusts 15-20mph may develop.
Effect of the wind on you?
Small.
How Wet?
Rain unlikely
Chance of odd spots from thickening high cloud, possibly a very remote brief burst of rain mainly in afternoon.
Cloud on the hills?
Hills clear
Chance of cloud free summits?
Above 90%
Sunshine and air clarity?
A mix of sun and some high cloud, which may cover the sky for periods. Visibility very good, some haze develops.
How Cold? (at 750m)
13C at dawn, rising to 18C afternoon.
Freezing Level
Above the summits.
Planning Outlook
Cooler and less humid for Saturday, some showery rain and low cloud in the west, tending to improve. Sunday is a dry day for most with clearer hills, light winds and feeling warmer, becoming more humid again from the south. More uncertainty early next week - some rain possible for Scotland into Monday, potential scattered thunderstorms for England and Wales as it becomes very humid. A fresher westerly wind is indicated into Tuesday with some showers, then higher pressure likely expands over the country from the south midweek with drier weather then likely for a few days. Scope for higher temperatures and humidity to build toward next weekend, which may eventually break into thunderstorms.