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
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.
Cool to mild
Air temperature 5 to 10C 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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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.
Cool to mild
Air temperature 5 to 10C 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
Monday 28th September 2026
Last updated
Sun 27th Sep 26 at
4:30PM
Summary for all mountain areas
Breezy over Scottish mountains, windier further northwest, feeling chilly. Showery for western Lochaber, Mull and around Skye, tending to fade during afternoon. Largely dry elsewhere, varied cloud over hills in morning, lifting and breaking above many tops with some sunshine. Lighter winds for England & Wales.
Headline for Brecon Beacons
Light wind until later. Sunshine and broken cloud, hills clear.
How windy? (On the summits)
Variable becoming south then southeasterly, 10mph or often less, then later afternoon tending to rise to 15-20mph, strengthening further during evening and into night to gusty 30mph.
Effect of the wind on you?
Small much of day, then feeling breezier later in the day.
How Wet?
Rain unlikely
Small chance a very brief light shower near to the southwest coast in the morning.
Cloud on the hills?
Largely clear
Patchy mist around some valleys from dawn, may drift briefly onto some lower hill slopes, but all dispersing.
Chance of cloud free summits?
Above 90%
Sunshine and air clarity?
Patchwork of cloud and sun, some thin high cloud in the morning. Visibility excellent.
How Cold? (at 750m)
6C rising 11C.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Tuesday 29th September 2026
Last updated
Sun 27th Sep 26 at
4:30PM
How windy? (On the summits)
South-southeasterly 40 to 60mph, turbulent gusts around higher tops and in places downslope toward the north.
Effect of the wind on you?
Challenging walking conditions on exposed terrain, but sudden buffeting also to some lower elevations.
How Wet?
Risk persistent rain and drizzle
Spots of rain frequently, drizzly where in cloud; some steadier pulses of rain spreading from the south, which may set in for more constant falls on Brecon Beacons.
Cloud on the hills?
Covering many hills, may improve
Fairly extensive cloud over the hills, from some lower elevations upward in the morning on south-facing slopes. May thin and break a little, best of breaks forming toward western Cambrians.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Some glimpses of weak sun through high cloud mostly west coastal areas. Hazy, murky southern areas.
How Cold? (at 750m)
13 to 15C, feeling humid; then only slight drop onward into night.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 30th September 2026
Last updated
Sun 27th Sep 26 at
4:30PM
How windy? (On the summits)
Southerly 25 to 40mph, at times 50mph at least in gusts on higher tops.
Effect of the wind on you?
Strenuous walking conditions, frequent buffeting in exposure on high terrain, gusts knocking you off balance.
How Wet?
Frequent bursts of rain west
A band of heavy rain from dawn soon clears northeastward, but clusters of heavy showers follow, merging to frequent rain more western areas, risk of thunder.
Cloud on the hills?
Varying over higher tops
Cloud base lifting early morning with some breaks to upper slopes, but will likely come and go over higher slopes all day, best of breaks typically toward eastern mid-Wales.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Intermittent sun breaking through mostly east and mid-Wales. Visibility varying, at times very good, but hazier coasts and reducing in rain.
How Cold? (at 750m)
Humid 14C or above from dawn, dropping during the day to a fresher 10C. Feeling near to freezing in the wind.
Freezing Level
Above the summits.
Planning Outlook
Strong southeasterly winds by Tuesday, widely gales on mountains with turbulent downslope gusts toward the west; some rain developing from the south during the day, becoming heavy later - a band of rain moves northeast into early Wednesday, leaving blustery south-southwesterlies into Wednesday and Thursday, showery in the west. Some occasional rain further ahead, but more often looking drier as higher pressure tends to expand further north during early October. Mostly mild temperatures, some cooler nights develop.