Snowdonia National Park Forecast

The Snowdonia National Park.

Viewing Weather Forecast for Thursday 2nd October 2014

Today | Friday | Saturday

Forecast last updated on Thursday 2nd October 2014 at 7:36am

Summary for all mountain areas

Fine with well broken cloud for nearly all mountain areas. However, winds will strengthen through the day, although even by dusk light most of Wales and S & Central Pennines. However, upland gales will extend east across Highland Scotland, becoming severe NW Highlands.

Headline for Snowdonia National Park

Wind slowly strengthening. Risk low cloud toward south.

How windy? (On the summits)

Southerly: 10mph at first, but progressively strengthening to 25mph by late afternoon Snowdon range, and 20mph elsewhere.

Effect of wind on you?

Negligible until into the afternoon.

How Wet?

Rain very unlikely

Very small risk isolated fine drizzle mid-Wales at first.

Cloud on the hills?

Very little if any

Hill substantially cloud free, although patches of cloud above 400m may edge northwards to areas south of Bala to Barmouth now and again, and during morning, fragments on higher tops elsewhere.

Chance of cloud free summits?

90%, but 60% southernmost hills morning

Sunshine and air clarity?

Sunshine extensive overall, although little sun morning south of about Bala to Barmouth. Excellent visibility north; but haze may return from the south.

How Cold? (at 900m)

7C

Freezing Level

Above the summits, but ground frost some valleys (probably those in and due east of Snowdon range) and corries at dawn.

Planning Outlook

All mountain areas of Britain from Friday 3rd October 2014

A major change in the weather pattern as over the next 10 days, low pressure will become dominant - with several separate centres 'dumb-belling' around each other, bringing cusps of strong wind, rain and low cloud. Away from the major rain and cloud areas, there will still be showers. Ahead of this, on Friday, strong evidence of major rainfall on mountains near the north Irish Sea as a cold front moves erratically southeast. Underfoot, presently still very dry most mountain areas.

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