Snowdonia National Park Forecast

Includes all summits in the the northern half of Wales from Plynlimon northwards.

Viewing Weather Forecast for Tuesday 16th July 2019
Forecast last updated on Monday 15th July 2019 at 2:47pm

Summary for all mountain areas

Many places often dry, but there will be a few bursts of rain around, these concentrated toward E/NE Scotland in the afternoon/evening, chance of a rumble of thunder. Cloud often above many hills. Wind fairly light. Feeling warm and quite humid again.

Headline for Snowdonia National Park

Low risk a shower. Cloud breaks to most tops. Light winds.

How windy? (On the summits)

South to southwesterly 10 to 15mph or often less, may reach 20mph at times Snowdon and west coastal tops.

Effect of wind on you?


How Wet? (Precipitation and its impact)

Chance an isolated shower

Most or all day dry. Chance of local patches of rain western hills in morning. By middle of day into afternoon, scattered brief bursts of rain possible, mostly east Wales.

Cloud on the hills?

Very little if any

Most cloud above the hills all day. Rare if any fragments forming on higher slopes around isolated showers.

Chance of cloud free summits?


Air clarity (below cloud)

Patches of sun, then more widespread sunshine extending inland from coast afternoon. Visibility generally very good; distant slight haze.

How Cold? (at 900m)

12C, only marginal change through day; feeling quite humid in valleys.

Freezing Level

Above the summits.

Planning Outlook

All mountain areas of Britain from Wednesday 17th July 2019

Pressure will be fairly low, and a southwesterly airflow will prevail later this week and into the weekend. Rain frequent, with some heavy falls at times, with local variations - likely concentrated on Wales/northern England on Friday into Saturday. Cloud often covering hills, although there will be breaks. Wind typically fairly light, but strengthening intermittently. Some days feeling warm and humid, but overall temperatures close to average.

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