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Live forecasts update automatically; written guidance last reviewed 15 June 2026 by the National Report weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Before heading into Snowdonia, check the live forecast above and prepare for rapidly changing conditions—the mountains create their own weather, often very different from the valleys below.
What’s the weather like in Snowdonia today?
The live forecast above gives the most accurate picture for the next few hours. Snowdonia’s weather is famously fickle; a clear morning can turn to low cloud and rain by lunchtime, especially on higher ground. The summit of Snowdon (Yr Wyddfa) is frequently several degrees colder and windier than Llanberis or Betws-y-Coed, so always factor in a drop of about 1°C for every 150 metres you climb.
What about the forecast for the week ahead?
For planning walks or climbs, look at the live forecast above and the 10 day weather forecast UK for general trends. The weather snowdonia 14 days outlook can hint at settled or unsettled patterns, but reliable detail is usually only available for the first three to five days. If you need snowdonia weather tomorrow, the live forecast above is your best bet—refresh it in the morning for the latest updates.
Is it safe to walk in Snowdonia in December?
Yes, but only with proper preparation. Snowdonia weather december brings short daylight, icy paths, and strong winds. Check the live forecast above, carry a map, torch, and full waterproofs, and avoid the summit if winds exceed 40 mph.
How accurate is the weather in Snowdonia 10 days ahead?
Long-range forecasts for weather in snowdonia 10 days give a general trend but are unreliable for specific hours. Mountain weather can shift dramatically within a day, so rely on the live forecast above and local mountain reports for your actual walking day.
Where can I get a Snowdonia weather forecast for 21 or 30 days?
Extended outlooks for snowdonia weather forecast 21 days or snowdonia weather 30 days show broad pressure patterns, not precise conditions. For planning, combine these with the live forecast above and the Bbc Wales Weather page for regional updates.