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