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Snowdonia National Park

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Viewing forecast for Friday, 29th June, 2012

Forecast last reviewed on Sunday, 19/05/13 at 14:00


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Headline, Snowdonia National Park

Windy; areas of showery rain. Extensive low cloud west.

How Windy?

Southwesterly, 35 to 40mph with gusts at times 55mph on higher summits.

Effect Of Wind?

Significant, or often on higher areas considerable buffeting on higher areas.

How Wet?

Showery

Showers; mainly western hills where they may be very frequent for an hour or two, giving almost constant rain.

Cloud on the hills?

Shrouding western hills extensively

Low cloud widespread across western hills, base typically 650m, later 800m, although dropping to around 350m in rain. Well inland, cloud often above 850m, but nearer 500m near showers.

Chance of cloud free Summits?

20% west to 80% east in afternoon

Sunshine and air clarity?

Bursts of sunshine, mainly well inland. Visibility dropping in rain to give foggy conditions across many higher hills.

How Cold? (at 900m)

8 to 10C.

Freezing level

Above the summits.

Planning Outlook for all mountain areas from Monday, 20th May, 2013

Warm with continued rapid melting of remaining snow at higher levels on Monday and for a while on Tuesday with some sunshine but still a risk of thundery showers. Turning cooler, cloudier and more showery midweek particularly across eastern ranges with northerly winds strengthening. A divergence of views towards next weekend with high pressure weakening as low pressure over France threatens to bring showers and local thunder northwards.

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