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
Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
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.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Warm
Comfortable temperatures on the hills, 12 to 16C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
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Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
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.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Warm
Comfortable temperatures on the hills, 12 to 16C 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
Monday 16th June 2025
Last updated
Sun 15th Jun 25 at
4:00PM
Summary for all mountain areas
A front draped over the Highlands brings low cloud and drizzly rain to western areas, heavier rain pushing northwards in the afternoon. Southwesterly winds will strengthen later in Scotland, becoming gales on higher mountains by evening. Dry with sunny spells and cloud clearing the tops in England & Wales.
Headline for Brecon Beacons
Light-moderate breeze. Low cloud in morning, clearing most hills.
How windy? (On the summits)
West then southwesterly, 15 to 20mph, tending to increase a little evening into night.
Effect of the wind on you?
Small most of day.
How Wet?
Rain unlikely
Possibly pockets of fine drizzle slopes close to southwest facing coasts.
Cloud on the hills?
Low cloud gradually breaking up
Cloud banks above 500-600m in the morning, or to some lower elevations southern slopes toward south & west of Brecon; highest tops may be near top of fog layer. Into middle of day, tending to lift, thin and disperse, though patches may linger across west Wales.
Chance of cloud free summits?
20% rising to 60% west, 80% east.
Sunshine and air clarity?
Fairly cloudy in morning, misty over many slopes S/W; some sun eastern mid-Wales. Improving to a patchwork of cloud and sun, very good visibility, some mist may linger west coast.
How Cold? (at 750m)
11C rising to 14C, local 16C east Wales afternoon.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Tuesday 17th June 2025
Last updated
Sun 15th Jun 25 at
4:00PM
How windy? (On the summits)
West to southwesterly 15 to 20mph.
Effect of the wind on you?
Mostly small.
How Wet?
Little or no rain
Patchy drizzly rain may move onto western Cambrians for a time into afternoon, brief spots possible elsewhere, otherwise likely staying dry.
Cloud on the hills?
Low cloud most persistent western hills
Varied low cloud banks above 500-600m, most frequent west Wales, may be more constant on some windward slopes. Cloud more broken and bases rising further eastwards.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Glimpses of sun mostly east, cloudier western mid-Wales. Visibility good out of cloud, may be hazier west.
How Cold? (at 750m)
11C, quite humid.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Wednesday 18th June 2025
Last updated
Sun 15th Jun 25 at
4:00PM
How windy? (On the summits)
Westerly or variable 10mph.
Effect of the wind on you?
Small
How Wet?
Rain not expected
Cloud on the hills?
Possible patchy cloud or coastal fog
Patchy cloud banks drifting onto some coastal slopes, may be fog on lower slopes for a time. Tending to all thin and disperse though a chance of fog lingering right along the Cardigan Bay coastline.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Mostly sunny, some fair-weather cloud. Visibility very good, but possibly misty near to the sea.
How Cold? (at 750m)
11C rising to 16C.
Freezing Level
Above the summits
Planning Outlook
Humid southwesterly winds early this week brings low cloud and spells of drizzly rain to western hills. High pressure to the south will tend to expand northwards during midweek, with dry conditions and warm air for all regions, sunshine and fair-weather cloud. Winds becoming light south to southeasterlies later in the week. Uncertainty by next weekend into early the following week, a risk of some rain or showers returning as pressure tends to fall.