Snowdonia National Park

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

Click here to download the latest PDF Last Updated Tue 13th Apr 21 at 4:18PM Last Updated Tuesday 13th April 2021 at 4:18PM
View our low-graphics version Last Updated Tue 13th Apr 21 at 4:18PM Last Updated Tuesday 13th April 2021 at 4:18PM

Viewing Forecast For

Snowdonia National Park
Wednesday 14th April 2021
Last updated Tuesday 13th April 2021 at 4:18 PM

Summary for all mountain areas

High pressure resides across Britain. Little wind overall. Very clear with a good amount of sun, but also some areas of cloud, which will produce one or two localised showers, these mostly just isolated flurries of hail or snow. Temperatures rising just above freezing point on many summits, except the very highest tops in Scotland.

Headline for Snowdonia National Park

Light winds. Risk showers. Hills mostly clear.

How windy? (On the summits)

Northeasterly, 5 to 10mph, locally 15mph toward dusk.

Effect of the wind on you?

Small

How Wet?

Isolated showers

Risk of an isolated shower, locally heavy with hail, or snow on higher slopes. Where these do form, they will move around slowly for an hour or so.

Cloud on the hills?

Little if any

Fragments of cloud may briefly form on higher slopes in morning, otherwise most cloud which forms will be above the hills. Brief patches below 700m if showers occur.

Chance of cloud free summits?

90%

Sunshine and air clarity?

Periods of sunshine; cloud sometimes filling in, particularly inland by afternoon. Visibility excellent.

How Cold? (at 900m)

0C rising to 2C.

Freezing Level

Frost in some valleys and corries from dawn; then typically just above freezing to highest summits.

Viewing Forecast For

Snowdonia National Park
Thursday 15th April 2021
Last updated Tuesday 13th April 2021 at 4:18 PM

How windy? (On the summits)

Easterly 10 to 20mph

Effect of the wind on you?

Fairly small

How Wet?

Precipitation unlikely

Cloud on the hills?

Generally clear

Chance of cloud free summits?

Above 90%

Sunshine and air clarity?

Sunshine extensive, a little fair-weather cloud filling in inland through day. Excellent visibility. Patchy fog some valleys after dawn.

How Cold? (at 900m)

Around 0C.

Freezing Level

Frost at dawn some valleys plus some sheltered higher ground; then typically 900-1000m

Viewing Forecast For

Snowdonia National Park
Friday 16th April 2021
Last updated Tuesday 13th April 2021 at 4:18 PM

How windy? (On the summits)

East or southeasterly 10mph, occasionally 15mph.

Effect of the wind on you?

Small

How Wet?

Precipitation not expected

Cloud on the hills?

Little if any

Chance of cloud free summits?

90%

Sunshine and air clarity?

Sunshine most widely morning, giving way as cloud gradually fills in inland. Visibility excellent. Pockets of mist some valleys at dawn.

How Cold? (at 900m)

-1C rising toward 2C.

Freezing Level

Frost in valleys and sheltered higher slopes at dawn; rising above freezing point on most higher summits.

Planning Outlook

High pressure is expected to influence our weather patterns beyond the middle of April. Often dry. Temperatures near freezing point on higher summits, tending to rise most afternoons. Lying snow on higher terrain will thaw only slowly. Some further overnight frosts. Next week may become milder with time. Sun and variable cloud; most mountains often clear. Mostly light winds, but southerlies strengthen this weekend. A frontal system coming in from the west by Sunday-Monday is likely to bring low cloud and some rain for a time, mainly in the west.