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.
Tuesday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Heavy rain
Near-constant heavy rain, sometimes torrential over the mountains, very wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Cool to mild
Air temperature 8 to 12C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
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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.
Heavy rain
Near-constant heavy rain, sometimes torrential over the mountains, very wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Cool to mild
Air temperature 8 to 12C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Viewing Forecast For
Brecon Beacons
Tuesday 15th July 2025
Last updated
Mon 14th Jul 25 at
4:00PM
Summary for all mountain areas
Heavy and persistent rain for England, Wales and southern Scotland, breaking up into thundery showers into the afternoon. Windy too, gale force over Welsh mountains. Some rain reaches north of the central belt, but most of the Highlands stays dry, with early low cloud rising and the wind mostly light. Much cooler than recently.
Headline for Brecon Beacons
Very wet morning, showers afternoon. Windy, up to gale force.
How windy? (On the summits)
Southwesterly 30 to 40mph, some stronger gusts for periods on high tops in Brecon Beacons.
Effect of the wind on you?
Very blustery, frequent buffeting, making walking and balance challenging on exposed ridges.
How Wet?
Heavy rain, later showers
Sustained very heavy rain from dawn lasting much of the morning. Breaking up during afternoon to become showery, but some heavy bursts with risk of thunder. Soon very wet underfoot, streams quickly becoming fast-flowing.
Cloud on the hills?
Extensive, some improvement
Shrouding the mountains, from low-mid elevations upward in west in morning. Higher bases eastwards, may rise to upper slopes afternoon as rain eases, but rarely clearing tops.
Chance of cloud free summits?
10% later 30%
Sunshine and air clarity?
Cloudy and dull, then skies brighten later in day with occasional sun, visibility very good away from showers.
How Cold? (at 750m)
9 or 10C, small variation all day. Feeling near or below freezing directly in the wind.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Wednesday 16th July 2025
Last updated
Mon 14th Jul 25 at
4:00PM
How windy? (On the summits)
West to northwesterly 20-25mph at dawn, soon easing to 10-15mph or less. Later southwesterly, may increase again.
Effect of the wind on you?
Mostly small much of daytime.
How Wet?
Rain unlikely until late
By evening, risk patchy rain develops from the southwest, chance of heavy bursts arriving.
Cloud on the hills?
Largely clear
Any brief patches in morning soon clearing.
Chance of cloud free summits?
Above 90%
Sunshine and air clarity?
Patchwork of cloud and sun; high cloud may start to thicken. Visibility excellent.
How Cold? (at 750m)
11C rising to 15C.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Thursday 17th July 2025
Last updated
Mon 14th Jul 25 at
4:00PM
How windy? (On the summits)
South to southwesterly 15 to 20mph.
Effect of the wind on you?
Fairly small
How Wet?
Drizzly rain west
Feeling damp where in cloud, some steadier drizzle at times, may become more persistent, though amounts small. Little reaching eastern mid-Wales.
Cloud on the hills?
Fairly extensive, breaks east
Covering many hills all day, risk increasingly extensive low cloud, filling in to mid or lower elevations south and western areas. Some breaks eastwards.
Chance of cloud free summits?
20%, to 50% furthest east
Sunshine and air clarity?
Glimpses of sun mostly east. Visibility good below cloud, but mister toward coast.
How Cold? (at 750m)
13C where in cloud, up to 16C eastern mid-Wales, feeling humid.
Freezing Level
Above the summits
Planning Outlook
Dry for many on Wednesday, chance of a very isolated afternoon shower. Humidity rises on Thursday with drizzly rain and low cloud particularly in western regions. A mixed outlook, as slack low pressure drifts slowly over the British Isles, giving scope for slow-moving showers and possible thundery downpours, these most extensive over England and Wales around the weekend. Staying fairly warm, quite humid.