Snowdonia National Park Forecast

Viewing Weather Forecast for Friday 23rd March 2018

Also includes higher summits south to Plynlimon.

Today | Saturday | Sunday

Forecast last updated on Thursday 22nd March 2018 at 3:51pm

Summary for all mountain areas

A complex area of low pressure pulls away from Scotland, but leaves a legacy of snow and rain across the Highlands, breaking up into showers through the day. Locally frequent showers for northern England, but Wales should be largely dry. Winds varied, up to gale force for a few hours, focused on the Lakes/Pennines & Snowdonia in the morning.

Headline for Snowdonia National Park

Dry most or all day. Upland gales easing.

How windy? (On the summits)

Southwesterly, 45 to 60mph early morning, but easing, by midday to 30-35mph, then in afternoon nearer 20-25mph, or less by dusk.

Effect of wind on you?

Widely difficult walking with frequent buffeting and significant wind chill in morning, but conditions improving through the day.

How Wet?

Largely dry

Overnight rain will have cleared before dawn. Rare local showers may occur (snow above 700m), but these well scattered.

Cloud on the hills?

Breaking to many tops

Covering many hills post-dawn, but soon lifting above 800m, and breaks increasingly forming to higher summits by middle of the day. Patches may come and go on western tops.

Chance of cloud free summits?

30% early morning; 70% by midday or sooner.

Sunshine and air clarity?

Some glimpses of sun breaking through, especially across eastern areas in the afternoon. Visibility generally very good.

How Cold? (at 900m)

Around 0C or just below. Feeling close to -15C where exposed to strongest wind in morning.

Freezing Level

900 to 1000m

Planning Outlook

All mountain areas of Britain from Saturday 24th March 2018

A cool westerly pattern this weekend, with temperatures sub-zero above 700-800m, and overnight frost in valleys. Scattered showers, focused on western Scotland, but plenty of dry and bright weather. Cloud breaking to many high tops and visibility excellent. A chilly breeze, although winds relatively light for many areas. Changeable next week, with frontal systems approaching from the Atlantic, but then a switch to colder northerly winds from midweek and toward Easter. The freezing level dropping widely, and very cold conditions are possible on many mountains. Further accumulating snowfalls are likely, although detail is uncertain.