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Eryri / Snowdonia National Park Forecast

Eryri / Snowdonia National Park

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

Today's Forecast

Moderate breeze, locally gusty
Drizzle
Poor visibility
Mild

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Click here to download the latest PDF Last Updated Sun 21st Jul 24 at 4:30PM Last Updated Sun 21st Jul 24 at 4:30PM
View our low-graphics version Last Updated Sun 21st Jul 24 at 4:30PM Last Updated Sun 21st Jul 24 at 4:30PM

Viewing Forecast For

Eryri / Snowdonia National Park
Monday 22nd July 2024
Last updated Sun 21st Jul 24 at 4:30PM

Summary for all mountain areas

A lot of cloud, often covering western hills. Patchy rain and drizzle for southern Scotland, northern England and Wales, amounts mostly small. Drier toward the north of the Highlands. Showers forming in the afternoon, locally heavy in the east. Light winds for Scotland, a fresher breeze for England and Wales.

Headline for Eryri / Snowdonia National Park

Breezy. Patchy rain, low cloud west.

How windy? (On the summits)

Southerly turning westerly, 20 to 30mph.

Effect of the wind on you?

Noticeable, affects comfortable walking, gusts affecting stability and balance on exposed ridges. Marked wind chill.

How Wet?

Drizzly rain frequent

Rain from before dawn tending to ease off, but leaving patchy rain or drizzly showers on and off during day, most common on western hills.

Cloud on the hills?

Hills mostly covered, lowest west

Extensive cloud on the coastal hills from mid or lower slopes upward, hardly any breaks. Toward east Wales, cloud base may rise with some breaks above hills.

Chance of cloud free summits?

10% coast, 60% east

Sunshine and air clarity?

Little to no sunshine. Mostly poor visibility.

How Cold? (at 900m)

10 to 12C; quite humid, fresher later.

Freezing Level

Above the summits

Viewing Forecast For

Eryri / Snowdonia National Park
Tuesday 23rd July 2024
Last updated Sun 21st Jul 24 at 4:30PM

How windy? (On the summits)

Northwesterly 15 to 20mph in morning, possible 25mph for a few hours, easing to 10-15mph or less afternoon onward.

Effect of the wind on you?

Feeling breezy and cool on higher terrain early in day, becoming small.

How Wet?

Early light showers fading

Remnants of previous rain may leave drizzly showers from dawn, mainly northern areas, generally fading out in morning to become dry.

Cloud on the hills?

Lifting and gradually clearing

Banks of cloud most persistent in northern areas above 600-800m in morning, some lower patches. Lifting to higher slopes then mostly above the tops into afternoon.

Chance of cloud free summits?

30% rising to 80%

Sunshine and air clarity?

Patchwork of sunshine; increasingly sunny near coast in afternoon. Visibility excellent.

How Cold? (at 900m)

9C rising to 12C in afternoon.

Freezing Level

Above the summits

Viewing Forecast For

Eryri / Snowdonia National Park
Wednesday 24th July 2024
Last updated Sun 21st Jul 24 at 4:30PM

How windy? (On the summits)

Southerly, increasing during the day, 10 to 25mph, up to 35-40mph by evening.

Effect of the wind on you?

Starting small, but feeling increasingly blustery over higher tops. Later in day frequent buffeting.

How Wet?

Dry until late

Spots of rain developing later from high cloud thickening in west. By evening into night, some steadier rain arriving.

Cloud on the hills?

Little if any

Any early mist patches on lower slopes soon dispersing. Brief patches may drift onto some hills near to the west coast.

Chance of cloud free summits?

90%

Sunshine and air clarity?

Strong sun best in morning, thin high cloud tending to thicken later. Visibility excellent.

How Cold? (at 900m)

10C rising to 13C.

Freezing Level

Above the summits

Planning Outlook

A ridge of high pressure produces a better day on Tuesday. Midweek onward, southwesterly winds will bring further rain from time to time, lowest cloud over western mountains. Temperatures near or a little lower than normal on the hills. Pressure tending to build from the south toward next weekend bringing drier and warmer conditions more widely. Southwest breezes toward northwest Scotland may continue to bring frequent cloud and a little rain at times here.