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.
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.
Hazy, some fog banks
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Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
Very warm
Warm conditions across the hills, rising above 15C on tops. Increasingly hot on lower terrain, reaching 25C+ in many valleys. Beware of dehydration.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
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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.
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.
Hazy, some fog banks
Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
Very warm
Warm conditions across the hills, rising above 15C on tops. Increasingly hot on lower terrain, reaching 25C+ in many valleys. Beware of dehydration.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
Viewing Forecast For
Brecon Beacons
Thursday 28th May 2026
Last updated
Wed 27th May 26 at
4:15PM
Summary for all mountain areas
Gusty winds, warm and humid, a mix of strong sun and high cloud - the warmest day this week for the Highlands, but locally low cloud southeast. Northern England starts with a risk of thunderstorms, but clearing. An isolated thunderstorm possible for Highlands, mainly NW later. Low cloud near west coast of Wales.
Headline for Brecon Beacons
Increasingly windy. Warm sun, hazy; coastal low cloud.
How windy? (On the summits)
Southerly, 20 to 25mph in morning, but risk some stronger gusts up to dawn. Generally strengthening from west middle of day into afternoon onward to 35mph, gusts 40-45mph in places, moderating a little from dusk into night.
Effect of the wind on you?
Blustery in morning, but deteriorating to more strenuous walking conditions, considerable buffeting affecting balance on exposed tops.
How Wet?
A little coastal drizzle, chance showers later
Some fine drizzle develops over south and western coastal hills as low cloud rolls in. Possibly an odd showery burst in southern areas later in day.
Cloud on the hills?
Low cloud mainly coastal west Wales, little inland and toward east.
Largely clear morning, bar odd fragments or mist in valleys at first. Coastal low cloud / fog toward the southwest likely rolls inland across Pembrokeshire in the morning, risk more widely in western areas into middle of day, covering hills to lower slopes, may vary in extent into afternoon. Inland and eastern hills stay clearer overall.
Chance of cloud free summits?
50% west, to 90% east and well inland.
Sunshine and air clarity?
Varied sun and thin high cloud, plus lower level cloud and mist especially toward south/west coast. Beware sunburn and dehydration if in stronger sun. Generally very hazy even away from cloud.
How Cold? (at 750m)
15 to 17C, small change from dawn into day; cooling to 10C if in cloud and more generally 9C into evening-night. Feeling much cooler where directly in the stronger wind.
Freezing Level
Well above the summits.
Viewing Forecast For
Brecon Beacons
Friday 29th May 2026
Last updated
Wed 27th May 26 at
4:15PM
How windy? (On the summits)
Southwesterly 15 to 25mph.
Effect of the wind on you?
Fairly small, but breezy over higher exposed terrain, feeling quite cool.
How Wet?
Rain unlikely
Chance of a brief drizzly shower west coastal Cambrian hills in the morning.
Cloud on the hills?
Tending to clear
Banks of cloud over western hills, mostly Cambrians in morning. Likely to increasingly all break up during day.
Chance of cloud free summits?
60% rising to 90%
Sunshine and air clarity?
Occasional sun mostly toward east. Visibility good, hazier west coastal areas.
How Cold? (at 750m)
9 to 11C. Wind chill feeling like 3 to 5C on tops.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Saturday 30th May 2026
Last updated
Wed 27th May 26 at
4:15PM
How windy? (On the summits)
South to southwesterly 15 to 30mph, tending to strengthen during day.
Effect of the wind on you?
Fairly small at first, but increasingly noticeable and with time affecting ease of walking on exposed high terrain.
How Wet?
Little or no rain
Much of the day may well remain dry. Chance of patchy rain encroaching onto western hills in afternoon and evening.
Cloud on the hills?
Little if any, lowering western tops later
Local patches or fragments mainly in west in morning, but most hills clear much of day. Later in day, cloud lowering over hills mainly in west, may fill in to below 600m.
Chance of cloud free summits?
90% dropping to 30% late in day.
Sunshine and air clarity?
Patchwork of sun gives way to building high cloud from west; cloudier later. Visibility very good.
How Cold? (at 750m)
9 to 11C. Wind chill feeling near 0C on tops.
Freezing Level
Above the summits.
Planning Outlook
Gale or near-gale force southwesterlies on Friday for the Highlands, strongest toward the northwest, where accompanied by rain, drizzle and low cloud. Nearer average temperatures for all into the weekend onward as changeable southwesterlies prevail - a generally unsettled theme is expected during the first ten days of June with lower pressure dominating. Frontal systems come in from the Atlantic - rain, drizzle and low cloud most common on western coastal mountains, but showery days are likely more widely at times, possibly rain more widely further south later in week. Wind speeds will vary, but reaching gale force on mountains for periods.