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.
Sunday's Forecast
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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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Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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
Sunday 16th August 2026
Last updated
Sat 15th Aug 26 at
4:00PM
Summary for all mountain areas
Mostly light rain and drizzle will drift in from the west, some western hills often damp throughout the day and shrouded in cloud. Rain patchier northeastward across the Highlands, but a risk of local bursts of rain forming in the afternoon. Mid & south Wales largely dry. Generally light winds.
Headline for Brecon Beacons
Largely dry and hills clear, warm.
How windy? (On the summits)
Westerly but some variability, 5 to 15mph, rising a little later in day, by dusk toward 20mph.
Effect of the wind on you?
Mostly small.
How Wet?
Generally dry
A chance of odd spots of light rain west Wales, but much of the region likely dry during the day. A little rain may develop from north by dusk into night.
Cloud on the hills?
Little or none, then lowering later west
Small chance of a few patches of cloud here and there, but most hills cloud-free. Late in day, cloud tending to lower over hills from northwest, soonest west Cambrians where forming to mid-slopes through to dusk.
Chance of cloud free summits?
80%, late in day dropping to 50%
Sunshine and air clarity?
Bright with sun but often weakened by high cloud. Very good visibility.
How Cold? (at 750m)
10 or 11C, rising to 14C, locally warmer east, up to 16C; valley temperatures may reach 25C very locally southeast Wales.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Monday 17th August 2026
Last updated
Sat 15th Aug 26 at
4:00PM
How windy? (On the summits)
West then southwesterly 10 to 20mph, tending to rise during daytime, later in day toward 30mph.
Effect of the wind on you?
Mostly small, starting to feel more noticeably breezy, may affect ease of walking later in day.
How Wet?
Little or no rain
Largely dry, a little drizzly rain may occur over western Cambrians occasionally.
Cloud on the hills?
Mostly morning and in west
Varied banks of cloud over the hills in the morning, lowest and most persistent in west above 500-600m. Breaking to tops middle of day into afternoon, occasional patches still affecting west Cambrians.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Sun fairly weak through high cloud, overcast for periods in west. Visibility very good.
How Cold? (at 750m)
12 to 15C.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Tuesday 18th August 2026
Last updated
Sat 15th Aug 26 at
4:00PM
How windy? (On the summits)
Westerly 20 to 35mph, strongest sustained speeds and very gusty early in the day.
Effect of the wind on you?
Affecting comfortable walking on higher terrain, for a time more challenging in exposure. Marked wind chill.
How Wet?
Rain tending to clear
Rain developing from overnight likely continues into morning, heavy in west Wales. This may clear southward during day to leave just scattered showers, but a chance of rain persisting longer.
Cloud on the hills?
Low cloud may persist
Blanket low cloud across hills during rain, to lower elevations south and western aspects. Slow improvement if rain fades.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Overcast, dull with poor visibility in rain, may improve to brighter skies and later some sun and very good visibility.
How Cold? (at 750m)
12 to 14C, trending cooler later in day. Feeling like 3 to 5C in the wind.
Freezing Level
Above the summits.
Planning Outlook
Low pressure initially to the north of Scotland early in the new week will eventually envelop the whole of Britain next week bringing generally unsettled and cooler conditions increasingly widely. Often blustery widely, west turning northerly winds later in week - becoming notably chilly over higher mountains. Rain extends into Scotland on Monday, turning heavy, then moves south over England and Wales by Monday night into early Tuesday. The rest of the week sees showery rain common for all areas, the rain most persistent in western Scotland, but heavier showery bursts and thundery downpours become widespread mid to late week.