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.
Today'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.
Mostly dry, partly cloudy
Dry most or all day. Variable amounts of sun and cloud, occasional patches drifting onto some higher slopes, but most summits often clear.
Cool
Air temperature just above freezing to higher summits. May feel pleasant on lower ground or when climbing, but feeling chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Strong sunshine
High UV levels, beware of sunburn. Warm temperatures, rising above 20C in the valleys, beware of dehydration.
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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.
Mostly dry, partly cloudy
Dry most or all day. Variable amounts of sun and cloud, occasional patches drifting onto some higher slopes, but most summits often clear.
Cool
Air temperature just above freezing to higher summits. May feel pleasant on lower ground or when climbing, but feeling chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Strong sunshine
High UV levels, beware of sunburn. Warm temperatures, rising above 20C in the valleys, beware of dehydration.
Viewing Forecast For
Brecon Beacons
Thursday 12th September 2024
Last updated
Wed 11th Sep 24 at
2:12PM
Summary for all mountain areas
Very cold for September; hail and snow in showers across the mountains in Scotland, and hail and sleet highest tops Snowdon range (where precipitation frequent). Elsewhere, a few brief showers and frequent bright sunshine. Nevertheless, feeling well below freezing point across the mountains directly in the wind.
Headline for Brecon Beacons
Risk brief showers. Feeling very cold in the wind.
How windy? (On the summits)
Northwesterly, 20mph. perhaps 25mph higher slopes (particularly Cambrian range) morning Overall will drop slowly through the day.
Effect of the wind on you?
Fairly small, but marked wind chill
How Wet?
Little or no rain
One or two brief showers, on Brecon Beacons and Black Mountains, confined to afternoon.
Cloud on the hills?
Little if any by mid morning
Cloud may cover some higher slopes after dawn, but hills extensively cloud free within a few hours. May intermittently continue to shroud higher tops in Cambrian range.
Chance of cloud free summits?
90% by late morning
Sunshine and air clarity?
Bright sunshine; most extensive morning east and south Wales. Very good or well inland excellent visibility,
How Cold? (at 750m)
3 rising to 6C. Directly in the wind will feel well below freezing point.
Freezing Level
Above the summits, but slight frost valleys at dawn.
Viewing Forecast For
Brecon Beacons
Friday 13th September 2024
Last updated
Wed 11th Sep 24 at
2:12PM
How windy? (On the summits)
West backing southwesterly, 10mph or less.
Effect of the wind on you?
Negligible
How Wet?
Rain very unlikely
Cloud on the hills?
Very little
Cloud covering some higher slopes after dawn will lift above the summits within a few hours.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Sunny periods, before later sun weakening through higher cloud. Excellent visibility.
How Cold? (at 750m)
5C rising to 8 to 10C, warmest eastern summits.
Freezing Level
Above the summits, frost at dawn in some valleys.
Viewing Forecast For
Brecon Beacons
Saturday 14th September 2024
Last updated
Wed 11th Sep 24 at
2:12PM
How windy? (On the summits)
Southwesterly typically 20mph; may reach 25mph Cambrian range.
Effect of the wind on you?
Fairly small.
How Wet?
Risk pockets of drizzle
Substantially or completely dry, although a little fine drizzle in place.
Cloud on the hills?
Very extensive; may break mid Wales
Brecon Beacons and SW Wales: Fog intermittently from lower slopes up - may largely clear for periods afternoon. Elsewhere: Fog extensive from dawn, but likely to improve markedly with most or all hills clearing afternoon.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Patches of sun will come through. Visibility often good, but misty in drizzle.
How Cold? (at 750m)
7C. Will feel near freezing point directly in the wind.
Freezing Level
Above the summits.
Planning Outlook
Turning warmer from the weekend. Very little rain for a week to ten days (perhaps longer) for England and Wales, but in Scotland, particularly western mountains, rain (mainly Saturday and Monday - although the precise timing uncertain), Around Tuesday the fine warm water will extend across Scotland.