Snowdonia National Park Forecast
Viewing Weather Forecast for Wednesday 26th September 2018
Also includes higher summits south to Plynlimon.
Forecast last updated on Tuesday 25th September 2018 at 3:08pm
Summary for all mountain areas
Upland gales Cumbria northwards, increasingly severe northwards into the Scottish Highlands. Occasional rain, although the rain persistent W/NW Highlands. Fine with light winds Peak District and Wales. Many summits from Snowdon range northwards cloud covered all day.
Headline for Snowdonia National Park
Blustery and foggy Snowdon range. Cloud base slowly rising.
How windy? (On the summits)
Westerly 15 to 20mph mid-Wales to 25 to locally 35mph Snowdon range.
Effect of wind on you?
Walking arduous some areas Snowdon range (not necessarily on highest tops). Small mid Wales.
How Wet? (Precipitation and its impact)
Rain very unlikely
Low risk isolated light rain Snowdon range.
Cloud on the hills?
Mostly confined to Snowdon range
Snowdon range: hills extensively cloud covered above 500 to 750m. A few breaks to 900m, although the trend will be for the base to rise slowly. Elsewhere: Cloud will mostly form above the highest summits, although until afternoon, higher tops in west Wales often covered.
Chance of cloud free summits?
20% Snowdon range; 20% rising to 70% elsewhere.
Sunshine?
Air clarity (below cloud)
Sunshine, mostly south of the Snowdon range (may tend to extend slowly northwards through the day). Very good visibility although a haze.
How Cold? (at 900m)
11C
Freezing Level
Above the summits.
Planning Outlook
All mountain areas of Britain from Thursday 27th September 2018
High pressure, generally centred over or near S Britain will bring extensively dry conditions over the next 10 days. However, around the periphery of the high in Scotland, intermittently windy (particularly north), and weakening fronts will bring occasional rain southwards. Higher Munros often close to freezing point, and slight frost many valleys some nights.
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