Snowdonia National Park Forecast
Also includes higher summits south to Plynlimon.
Viewing Weather Forecast for Tuesday 28th June 2016
Forecast last updated on Monday 27th June 2016 at 4:07pm
How windy? (On the summits)
South to southwesterly, 20 to at times 25mph.
Effect of wind on you?
Fairly small, but walking impeded on higher areas.
Rain soon setting in
Pulses of rain spreading from the south-west soon after dawn, turning persistent and heavy over many hours, breaking up slowly later afternoon and into evening.
Cloud on the hills?
Extensive higher tops, lowest west
Often covering western hills above 600-700m, occasionally forming to low levels coastal hills west from Porthmadog. Some breaks to higher tops in east, also north from Carnedd.
Chance of cloud free summits?
20% west; 40% north & east.
Sunshine and air clarity?
Sunshine unlikely. Foggy many hills, and visibility reduced due to rain.
How Cold? (at 900m)
Above the summits.
All mountain areas of Britain from Wednesday 29th June 2016
A cool westerly pattern will persist across Scotland over the next week to 10 days or perhaps more, and even in England & Wales, it will rarely feel warm. Occasional strong winds. A series of frontal systems will pass quickly from west to east, bringing some rain most days. Mainly showery, but sometimes heavy rain setting in for several hours, particularly western mountains, including Wales. Later this week, the focus of rain shifts further north for a time, but over the weekend, renewed pulses of rain are expected to run across the southern half of Britain.