Snowdonia National Park Forecast
Viewing Weather Forecast for Thursday 24th May 2018
Also includes higher summits south to Plynlimon.
Forecast last updated on Wednesday 23rd May 2018 at 2:23pm
Summary for all mountain areas
Scotland: Little wind, almost unbroken sunshine and warm. Extensively dry N England, but areas of high level cloud and blustery. Low cloud mainly Pennines will clear. Showery rain Wales with risk thunder. Cloud will sometimes shroud the summits.
Headline for Snowdonia National Park
Blustery. Extensive cloud; bursts of showery rain. Chance thunder.
How windy? (On the summits)
Easterly generally 20 to 25, but locally 30mph.
Effect of wind on you?
May impede ease of walking where exposed, gusty in places.
How Wet?
Bursts of rain, briefly heavy. Isolated lightning.
Bursts of rain, in some places constant over an hour or two, probably focused on mid-Wales, but very hit and miss. Risk thunder.
Cloud on the hills?
Summits frequently cloud free west Wales
Confidence low: Fog will intermittently shroud east Wales, sometimes below 350m morning, but most cloud above 500m afternoon. In west Wales, summits often fog free, although in and after rain, fog will form temporarily on higher slopes.
Chance of cloud free summits?
30% east Wales to 70% west
Sunshine and air clarity?
Sunshine will weaken and largely give way through morning as cloud fills in. Often good visibility, but general haze. Visibility will drop further in rain.
How Cold? (at 900m)
12C, although nearer 8C where in cloud.
Freezing Level
Above the summits
Planning Outlook
All mountain areas of Britain from Friday 25th May 2018
Little change in the present pattern is likely over the coming week - little or no rain and frequently sunny with light wind across Scotland. Further south also some fine warm weather but interludes of cloudy, sometime thundery weather are likely. Although signals are weak, there may not be much change into early June. Much terrain will be very dry ('tinder dry') underfoot, particularly in Scotland. However, on some higher routes there remain significant patches of snow.
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