Snowdonia National Park Forecast

Viewing Weather Forecast for Monday 27th February 2017

Also includes higher summits south to Plynlimon.

Tomorrow | Tuesday | Wednesday

Forecast last updated on Sunday 26th February 2017 at 1:11pm

How windy? (On the summits)

Southwesterly, 20 to 25mph, perhaps briefly 30mph.

Effect of wind on you?

Fairly small.

How Wet?

Frequent snow and hail; risk lightning

Snow and hail showers throughout the day, at times frequent and heavy, and may set in for an hour or more, especially in west. Rain below 350m. Risk of thunder & lightning.

Cloud on the hills?

Nearly all confined to higher tops

Cloud occasionally below 500m near showers, and generally extensive above a base varying between 750 and 900m. Generally highest bases east Wales and Carneddau.

Chance of cloud free summits?

30% west; 60% east.

Sunshine and air clarity?

Brief bursts of bright sunshine, mostly toward east. Excellent visibility - but temporarily very poor or appalling in snow and cloud.

How Cold? (at 900m)


Freezing Level

650m, but terrain partly frozen some valleys in morning after a frost.

Planning Outlook

All mountain areas of Britain from Tuesday 28th February 2017

Broadly unsettled over the next week to 10 days, with complex areas of low pressure influencing the British Isles. Precipitation frequent, often in the form of heavy showers - snow on the mountains. Some places will escape dry on certain days - confidence of day to day detail is low - northern Scotland generally faring best. Colder than recently, and across Scotland, mountain terrain substantially frozen all week, and intermittently so higher tops England and Wales, although temperatures will tend to rise slowly from the south later this week.