Snowdonia National Park Forecast

The Snowdonia National Park.

Viewing Weather Forecast for Tuesday 30th June 2015
Forecast last updated on Tuesday 30th June 2015 at 4:26pm

Summary for all mountain areas

A blustery day where exposed on the mountains, although temperatures will be increasingly warm and humid. There will be areas of rain, mainly Scotland, but very sporadic in nature, and may amount to very little all day.

Headline for Snowdonia National Park

Breezy. Dry. Warm sunshine.

How windy? (On the summits)

Southerly 20 to locally 25 or 30mph.

Effect of wind on you?

Mostly fairly small, but in places significant buffeting, locally on lower slopes.

How Wet?

Rain unlikely

Cloud on the hills?

Mostly very little

Summits substantially cloud free; although patches of low cloud may affect western hills intermittently during morning, forming locally near the coast from lower slopes up.

Chance of cloud free summits?

90% by mid-morning

Sunshine and air clarity?

Extensive sunshine. Increasingly hazy.

How Cold? (at 900m)

11 rising to a warm 18C.

Freezing Level

Above the summits.

Planning Outlook

All mountain areas of Britain from Wednesday 1st July 2015

Very warm and humid air will continue to envelop all areas from the south during midweek - however this will soon trigger thunderstorms and locally torrential rain. Particularly during Wednesday, pulses of thundery rain are expected to advance north across most mountain areas, although currently much uncertainty about precise details. A similar very warm and thundery pattern is expected up to and including the weekend. There will be periods of strong winds and sudden gusts to low levels on the mountains this week.

In association with
Mountaineering Council of Scotland sportscotland Association of Mountaineering Instructions