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.
Friday's Forecast
Severe gale or storm, mobility very difficult
Severe conditions on the mountains, any movement very challenging, you may be blown over. 55-70mph+
Heavy rain
Near-constant heavy rain, sometimes torrential over the mountains, very wet underfoot.
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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Severe gale or storm, mobility very difficult
Severe conditions on the mountains, any movement very challenging, you may be blown over. 55-70mph+
Heavy rain
Near-constant heavy rain, sometimes torrential over the mountains, very wet underfoot.
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
Friday 3rd October 2025
Last updated
Thu 2nd Oct 25 at
4:08PM
Summary for all mountain areas
Mostly dry conditions early with modest wind effects, deteriorating as Storm Amy arrives. Winds reach gale-force around midday, further deteriorating through afternoon, reaching hurricane-force over high Scotland tops later. Rain becomes widespread with sustained heavy falls on western mountains; local flooding is likely.
Headline for Brecon Beacons
Moderate conditions deteriorate to heavy rain and violent wind
How windy? (On the summits)
From dawn, southwesterly 30-35mph, then a sudden rise from midday to a gusty 65-80mph, risk of stronger gusts over high tops.
Effect of the wind on you?
Strenuous conditions from dawn, deteriorating through afternoon to become widely tortuous in storm-force winds.
How Wet?
Heavy rain develops
A little light rain on western hills early morning, but often dry for a few hours. Rain develops from southwest, setting in quickly, sustained heavy falls onward into the afternoon. Increasingly very wet underfoot.
Cloud on the hills?
Breaks to tops, then becoming extensive
Patchy cloud on upper slopes in the morning, but good breaks to many tops for a few hours. As rain develops, cloud lowering to blanket the mountains, with time to lower slopes toward west/south.
Chance of cloud free summits?
70% dropping below 10%
Sunshine and air clarity?
Any sun soon weak as high cloud increasingly covers the sky to be overcast by early afternoon. Visibility starting very good, then hazier, becoming poor in rain.
How Cold? (at 750m)
9C, rising to 14C afternoon, then a sharp drop back to 9C after dark. Feeling much colder as wind increases, in exposure like -5C or below.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Saturday 4th October 2025
Last updated
Thu 2nd Oct 25 at
4:08PM
How windy? (On the summits)
Westerly 40 to 50mph, gusts 60mph+ higher tops; stronger speeds more likely to occur prior to dawn.
Effect of the wind on you?
Difficult walking conditions over higher terrain all day, challenging keeping balance in some exposed spots.
How Wet?
Rain most persistent west
Rain on and off, showery in nature, but frequent at times western Cambrians. Smaller amounts toward east. Fast-flowing streams, some flooding.
Cloud on the hills?
Varied, mostly high tops
Cloud likely to come and go over higher slopes, mostly above 700-800m, with breaks to summits for periods. Often clearer toward Black Mountains.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Glimpses of sun mostly toward east; perhaps quite bright for a few early hours. Quite hazy, visibility poor where in rain.
How Cold? (at 750m)
5 or 6C, locally warming to 7C on eastern mountains. Wind chill making it feel like -5 to -8C.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Sunday 5th October 2025
Last updated
Thu 2nd Oct 25 at
4:08PM
How windy? (On the summits)
Northwesterly 40-45 from dawn, shifting westerly and easing to 25-35mph.
Effect of the wind on you?
Arduous conditions early, easing though walking likely remains strenuous over tops. Notable wind chill.
How Wet?
Occasional light rain
Occasional drizzle drifting over the high tops, occasional pulses of light rain coming and going as well.
Cloud on the hills?
Becoming extensive on high ground
Patchy cloud drifts over tops in the morning, more frequent on western tops and Cambrian mountains. Patches increasingly extensive, shrouding high ground with bases drifting down to 600-700m at times. May break somewhat later.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Glimpses of morning sun east of high terrain, soon widely overcast. Visibility good from dawn though soon deteriorating with cloud and rain.
How Cold? (at 750m)
5C rising to 8C. Feeling below freezing in exposure.
Freezing Level
Above the summits
Planning Outlook
Storm Amy clears to the northeast on Saturday, behind which temperatures drop much cooler, to freezing on higher Scottish summits. Showery and windy conditions prevail through the day easing only gradually into Sunday as another mild and humid westerly brings cloud and drizzle to high tops and western slopes. Changeable westerlies continue into the week with frontal boundaries in northern England and Scotland: frequent rain and cloud on western mountains, rain at times passing eastward. Rain and cloud slip south through England and Wales around midweek, though weakening as it goes. Early indications of several days of northerly winds late in the week, which will bring cool, showery conditions to many with a mix of sunny and rainy spells with snow on northernmost tops.