Brecon Beacons
Includes all higher summits in the southern half of Wales, including highest point in Preseli Hills.
Viewing Forecast For
Brecon Beacons
Monday 20th September 2021
Last updated
Sun 19th Sep 21 at
3:49PM
Summary for all mountain areas
Low cloud and generally damp conditions will affect western Scotland. Total rainfall small, although some steadier rain will develop as a front moves in. SW'ly winds strongest in the far north. Elsewhere a fine day with broken cloud and sun, some early fog patches.
Headline for Brecon Beacons
Dry, hills generally clear, sunshine.
How windy? (On the summits)
Northerly 10 to locally 15mph.
Effect of the wind on you?
Small
How Wet?
No rain
Cloud on the hills?
Little if any
Most cloud confined above higher tops. Some early fog banks in valleys.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Sunshine and a little fair-weather cloud forming. Mostly excellent visibility; early low level fog.
How Cold? (at 750m)
9C
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Tuesday 21st September 2021
Last updated
Sun 19th Sep 21 at
3:49PM
How windy? (On the summits)
Northwest becoming westerly, 10mph.
Effect of the wind on you?
Negligible
How Wet?
Rain not expected
Cloud on the hills?
Generally clear
Chance of fog banks near west coast for a time, also in some valleys inland after dawn.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Sunshine and high level cloud. Visibility good, but a slight haze.
How Cold? (at 750m)
12C; hills warmer than valleys at first.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Wednesday 22nd September 2021
Last updated
Sun 19th Sep 21 at
3:49PM
How windy? (On the summits)
Southwesterly, 20 to 30mph, but may reach 40mph for a few hours on higher tops.
Effect of the wind on you?
Expect blustery conditions throughout the day, walking sometimes arduous on higher tops and feeling cool where exposed.
How Wet?
Little or no rain
Much of the day likely dry in south and east Wales. Chance of patchy light rain developing on western hills as a front approaches from the northwest.
Cloud on the hills?
Patchy low cloud mostly west Wales
Some banks of cloud focused on western Cambrian and Preseli hills, but very patchy elsewhere with most eastern summits clear.
Chance of cloud free summits?
40% west, to 70% east.
Sunshine and air clarity?
Occasional sun, mostly east Wales. Visibility good below cloud, but west coasts may become misty.
How Cold? (at 750m)
10 to 12C.
Freezing Level
Above the summits
Planning Outlook
High pressure will drift southwards and southwesterly winds will strengthen across Britain in the first half of the week, soonest across Scotland. Staying windy through into next weekend, gales or sometimes severe gales on higher mountains, particularly Scotland. Rain will become frequent in western Scotland as fronts come in from the Atlantic. Spells of rain elsewhere - less wet for Wales and southern Pennines, although a risk of heavier rain moving further south by the weekend. Temperatures will vary through the next 10 days, sometimes fairly warm and humid, but chiller air spreading from the northwest at times - Scottish high tops occasionally near freezing point.