Snowdonia National Park Forecast

The Snowdonia National Park.

Viewing Weather Forecast for Tuesday 30th September 2014

Forecast last updated on Monday 29th September 2014 at 2:52pm

Summary for all mountain areas

A weakening cold front will bring a band of strong winds, extensive low cloud and a little rain slowly eastwards during the day. However, some eastern areas will be fine, and although hazy, many summits will be or become cloud free.

Headline for Snowdonia National Park

Blustery northwest; extensive low cloud; a little rain developing.

How windy? (On the summits)

Southerly 20 eastern hills south of Bala to 30, occasionally 35mph Snowdon range.

Effect of wind on you?

Fairly small most areas, but will impede ease of walking Snowdon range.

How Wet?

A little rain and drizzle west

Here and there on western mountains pockets of fine drizzle, and into the afternoon one or two patches of steadier rain.

Cloud on the hills?

Extensive west; breaking east

Cloud base will vary, in places considerable between adjacent summits. Broadly cloud base will rise from west to east. On westernmost areas, cloud extensive, at times from lower slopes upward. Elsewhere, most cloud above 500 to 700m, and particularly south of Bala higher summits clearing.

Chance of cloud free summits?

10% west to 70% elsewhere

Sunshine and air clarity?

Patchy sunshine mainly east. Very hazy. Fog in and above many valleys in morning and on higher western areas most or all day.

How Cold? (at 900m)


Freezing Level

Above the summits.

Planning Outlook

All mountain areas of Britain from Wednesday 1st October 2014

Gradually from the west, wetter, less settled weather will envelop most mountain areas this week. Nevertheless, away from western Scotland, total rainfall will be small until Friday, when as a front coming in from the northwest, slows down, many areas will have a lengthy period of rain. Upland gales will develop on Thursday across the Scottish Highlands, and upland severe upland gales will be widespread on Friday - although easing markedly across the W & N Scottish Highlands. Remaining mild. Underfoot, away from the W & NW Highlands, still very dry.

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