Eryri / Snowdonia National Park

Includes all summits in the the northern half of Wales from Pumlumon northwards.

Friday's Forecast

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Click here to download the latest PDF Last Updated Thu 30th May 24 at 4:00PM
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Viewing Forecast For

Eryri / Snowdonia National Park
Friday 31st May 2024
Last updated Thu 30th May 24 at 4:00PM

Summary for all mountain areas

High pressure brings dry conditions for most regions, perhaps excluding parts of Snowdonia and coastal Northwest Highlands, where locally light, brief drizzle is possible. Besides those areas fine weather with broken cloud and sunshine and excellent visibility. Gusty morning on Pennines, Cheviots and parts of Cairngorms.

Headline for Eryri / Snowdonia National Park

Start cloudy, possible drizzle. Later some sun.

How windy? (On the summits)

Northwesterly, strongest around Yr Wyddfa/Snowdon, 25 to 35mph. Toward central Wales 15 to 25mph.

Effect of the wind on you?

Mostly small, but strenuous around Snowdon, may affect comfortable walking and balance on exposed ridges there.

How Wet?

Light rain possible at start.

Locally light rain or drizzle close to the northern coast, most likely in the morning.

Cloud on the hills?

Mostly covered at start, gradually clearing.

Morning fog often deep into the valleys, sometimes patches around tops. Cloud lifting during the day and dissipating into the afternoon. Cloud more persistent on the northern coastal mountains.

Chance of cloud free summits?

20% rising to 70%

Sunshine and air clarity?

Little to no sun at start, in the afternoon some sunshine between patches of clouds. Mostly good visibility in the afternoon.

How Cold? (at 900m)

5 to 9C. Feeling close to freezing especially on Snowdon ridges.

Freezing Level

Above the summits.

Viewing Forecast For

Eryri / Snowdonia National Park
Saturday 1st June 2024
Last updated Thu 30th May 24 at 4:00PM

How windy? (On the summits)

North to northwesterly, 10 to 20mph.

Effect of the wind on you?

Small.

How Wet?

No rain expected.

Cloud on the hills?

Mid-slopes covered at start, tops later.

Banks of clouds in the morning on mid- and lower slopes. Clouds lifting during the day, clearing most of the slopes, while gradually covering some higher tops.

Chance of cloud free summits?

70%

Sunshine and air clarity?

Often cloudy at start, over the course of the day improving conditions and significant amounts of sunshine. Good visibility, slight haze close to the north coast.

How Cold? (at 900m)

7 to 9C.

Freezing Level

Above the summits.

Viewing Forecast For

Eryri / Snowdonia National Park
Sunday 2nd June 2024
Last updated Thu 30th May 24 at 4:00PM

How windy? (On the summits)

Mostly northwesterly, 15 to 25mph.

Effect of the wind on you?

Fairly small.

How Wet?

No rain expected.

Cloud on the hills?

Hills mostly clear

Clear at start, patches of clouds building by higher tops on the course of the day, most likely around Yr Wyddfa/Snowdon.

Chance of cloud free summits?

80%

Sunshine and air clarity?

Mostly scattered sunshine, some less sunny hours around Snowdon afternoon. Toward central Wales glorious, very good visibility.

How Cold? (at 900m)

7 to 10C.

Freezing Level

Above the summits.

Planning Outlook

High strengthens during the weekend, which generally means good mountain weather, sometimes morning fog in valleys and often calm, sunny days. With northwesterly winds cloudier and especially on Sunday wet on western coastal Highlands. During the first week of June, northwesterly winds are likely to prevail, but frontal system coming from the north on Tuesday will bring cooling and intense showers to Scotland and northern England. Highest Munros may even see some fresh snow.