Snowdonia National Park Forecast

Viewing Weather Forecast for Wednesday 18th July 2018

Also includes higher summits south to Plynlimon.

Today | Thursday | Friday

Forecast last updated on Tuesday 17th July 2018 at 2:30pm

Summary for all mountain areas

A slack pressure pattern results in light winds and local areas of showers. Some slow-moving bursts of rain locally, focused on southern Scotland, but many places will escape dry much of the day. Cloud breaking to higher summits. Pleasant temperatures, but fairly cool NW Scotland.

Headline for Snowdonia National Park

Scattered showers, many areas often dry. Cloud breaks.

How windy? (On the summits)

Southwesterly or locally variable, 10mph or at times less; briefly gusty to around 15mph on some hills where showers form.

Effect of wind on you?


How Wet? (Precipitation and its impact)

A few showers spreading east

A few areas of showers from early morning, mostly affecting coastal hills. Further scattered showers forming inland by middle of day and afternoon, drifting across east Wales into the evening.

Cloud on the hills?

Many tops often clear

Patches of cloud capping some hills, mostly around showers, but may cover hills around Snowdon early morning. Patchy mist some valleys post-dawn.

Chance of cloud free summits?


Air clarity (below cloud)

A little sun, mostly morning, then cloud tending to fill in inland; sunniest coastal hills afternoon. Visibility very good.

How Cold? (at 900m)

9 to 12C

Freezing Level

Above the summits

Planning Outlook

All mountain areas of Britain from Thursday 19th July 2018

A mixed westerly pattern will exist through the weekend into early next week. Occasional frontal systems coming in from the Atlantic will bring rain from time to time, focused on western Scotland. Some showery bursts possible elsewhere, but also a good amount of dry weather. Varied wind speeds, at times light, but also some blustery periods across the hills through the weekend. Temperatures around average for mid-July, warmest England & Wales, but NW Scotland often quite cool.