Brecon Beacons

Includes all higher summits in the southern half of Wales, including highest point in Preseli Hills.

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Viewing Forecast For

Brecon Beacons
Saturday 19th June 2021
Last updated Fri 18th Jun 21 at 7:13PM

Summary for all mountain areas

After a chilly start, a fine day will follow with a patchwork of sunshine. Chance of a few bursts of rain here and there, mainly inland in the afternoon. High cloud bases with hills extensively clear, although some banks of hill fog at first; particularly SE Highlands.

Headline for Brecon Beacons

Early cloud banks clearing. Then fine with hazy sun. Increasingly blustery.

How windy? (On the summits)

Southerly typically 15mph at first, although will increase during day to 20 to 25mph, particularly western summits where perhaps 30mph by evening

Effect of the wind on you?

Mostly small, but there may be some buffeting western mountains later in day - affecting both higher & lower slopes.

How Wet?

Little or no rain

Chance of a few bursts of rain; likely to amount to very little.

Cloud on the hills?

Very little

Summits extensively or completely cloud free. However some early banks possible for a few hours after dawn, mainly across the eastern areas.

Chance of cloud free summits?

80%

Sunshine and air clarity?

Extensive sunshine overall, although areas of high, mostly thin cloud. Hazy although overall good visibility.

How Cold? (at 750m)

14C.

Freezing Level

Above the summits.

Viewing Forecast For

Brecon Beacons
Sunday 20th June 2021
Last updated Fri 18th Jun 21 at 7:13PM

How windy? (On the summits)

Low confidence in forecast: Easterly 25-40mph, risk 50mph early in day. May ease and become southerly later.

Effect of the wind on you?

Walking arduous, or on higher tops difficult, at times through the day.

How Wet?

Pulses of rain, perhaps much of day.

Areas of rain will edge across the area to give frequent rainfall through day. Some heavy and perhaps thundery pulses and becoming more widely showery later.

Cloud on the hills?

Extensive

Very likely cloud shrouding the hills in fog extensive for much of the day. Bases generally around 500-800m, perhaps briefly breaking off tops in the west.

Chance of cloud free summits?

20%

Sunshine and air clarity?

Little or no sun. Visibility often poor due to rain, and otherwise fairly hazy.

How Cold? (at 750m)

8 to 10C

Freezing Level

Above the summits.

Viewing Forecast For

Brecon Beacons
Monday 21st June 2021
Last updated Fri 18th Jun 21 at 7:13PM

How windy? (On the summits)

Low confidence in detail: Northeasterly 15 to 25mph, risk 30mph tops for a time.

Effect of the wind on you?

Blustery, will impede walking at times across higher tops with marked chill.

How Wet?

Early rain, clearing to showers.

A slow-moving front may bring some rain from dawn, but this will tend to fizzle out and disperse to the south. Drier conditions following with still with a few showers.

Cloud on the hills?

Covering tops morning, then clearing.

Banks of cloud are likely to cover tops in fog for a few hours in morning, some patches to lower slopes. However, bases lifting and breaking up into afternoon.

Chance of cloud free summits?

30% lifting to 70%

Sunshine and air clarity?

Overcast start, but some patchy sun breaking through as day progresses. Visibility poor in early rain, but improving through day as front clears.

How Cold? (at 750m)

5C lift to 8C

Freezing Level

Above the summits.

Planning Outlook

Fairly chilly pattern early next week, but mostly fine with hills often clear as a ridge of high pressure dominates. However from midweek onwards, whilst turning warmer, it will become more changeable with the risk of pulses of showery rain from time to time as pressure gradually lowers from the west. However, there will still be some dry and fine periods; these conditions perhaps predominating still across eastern areas where broadly any rainfall amounts will be small.