Brecon Beacons
Includes all higher summits in the southern half of Wales, including highest point in Preseli Hills.
Viewing Forecast For
Brecon Beacons
Monday 10th May 2021
Last updated
Sun 9th May 21 at
3:17PM
Summary for all mountain areas
Many areas dry from dawn, but patches of rain affecting some western hills, mainly near coast. Showers will develop more widely from mid morning with some torrential downpours forming in the afternoon with the risk of hail and thunder. Banks of hill fog in and around showers. Risk gales highest tops in Wales.
Headline for Brecon Beacons
Windy day with showers developing. Risk hail and thunder into the afternoon.
How windy? (On the summits)
Southerly, 25 to 40mph, strongest on western summits.
Effect of the wind on you?
Very blustery, considerable buffeting much of the day on higher summits, particularly west Wales. Sudden gusts near showers.
How Wet?
Local downpours; hail, risk lightning
Hit and miss bursts of rain, developing increasingly through the day, may locally result in rain for an hour or more, but some places missing most of the rain. Risk of hail and thunder.
Cloud on the hills?
Varied, banks of cloud around showers
Cloud frequently above the hills in east and mid-Wales. Patches on some slopes in the morning will lift and break. Then banks of cloud lowering during and after rain, with patches briefly to some lower slopes.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Occasional sun, but cloud filling in for periods. Visibility often very good, but suddenly very poor in rain.
How Cold? (at 750m)
5C
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Tuesday 11th May 2021
Last updated
Sun 9th May 21 at
3:17PM
How windy? (On the summits)
South to southeasterly 15 to 25mph; risk 30mho north early and late in day.
Effect of the wind on you?
Will impede walking at times across higher slopes with local buffeting.
How Wet?
Showers developing widely, risk thunder.
Clusters of showers from dawn focused near coast, will transfer inland through the morning. Into the afternoon, showers becoming widespread; risk hail/thunder.
Cloud on the hills?
Varied; occasionally covering tops.
Varying; away from rain, some good breaks to the tops with just patches here and there. However, in and around showers, may become extensive tops.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Occasional sun, most of which in morning. Visibility very good, but poor in showers.
How Cold? (at 750m)
4 or 5C
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 12th May 2021
Last updated
Sun 9th May 21 at
3:17PM
How windy? (On the summits)
Southerly 15 to 25mph; strongest in morning when risk of 30mph tops. May drop out later in the day.
Effect of the wind on you?
Will impede walking at times across higher slopes with some local buffeting.
How Wet?
Showers; transferring inland through day.
Clusters of showers coastal hills at first, but elsewhere dry. These showers will tend to transfer inland through day and become heavy at times; risk hail/thunder.
Cloud on the hills?
Fairly extensive morning, but breaking.
Cloud fairly extensive across higher slopes in the morning, but bases will lift and break and into the afternoon some good breaks developing to tops away from showers.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Fairly cloudy at first, but patchy sunshine developing. Visibility good or very good, but poor in rain.
How Cold? (at 750m)
4 or 5C
Freezing Level
Above the tops.
Planning Outlook
Low pressure situated to the west of Britain brings unsettled and showery conditions next week, some heavy downpours with hail and thunder. Varied winds. Generally milder than recently; only close to freezing point on highest Scottish summits, a thaw of lying snow, becoming confined to patches on high tops. Northernmost mountains may drop colder after midweek if a northeasterly wind strengthens. Toward next weekend, high pressure building toward the north is likely to bring drier conditions for a time to west & northern Scotland; uncertainty about extent of improvement elsewhere.