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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the UrbanMixr weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
For the most reliable snapshot of Guernsey’s conditions today, the live forecast above gives you the current temperature, wind and rain chances for St Peter Port, while the Met Office and BBC Weather provide the best longer-range outlook for the island.
What’s the best time to visit Guernsey for decent weather?
The warmest and driest months are June through September, when daytime highs hover around 18–21°C and sea temperatures peak for swimming. May and October can be pleasant but more changeable, with lighter crowds and lower accommodation rates. School holidays in late July and August see the busiest ferry and airport traffic, so book early if travelling then.
What should I pack for a Guernsey trip?
A waterproof jacket and layers are essential year-round — the island’s coastal position means wind and sudden showers can appear even on a sunny morning. In summer, bring sunglasses and sun cream for the UV exposure. For winter, a warm coat and sturdy shoes for cliff paths are wise. The Guernsey weather radar helps you track incoming rain bands before you head out.
Is the BBC Weather Guernsey forecast reliable for St Sampson’s?
Yes, BBC Weather covers the whole island, including St Sampson’s and St Peter Port, using the same Met Office data. For hyperlocal conditions like fog or sea breezes in the north, check the Guernsey weather radar for real-time updates.
Where can I find the xc weather forecast for Guernsey?
XC Weather provides a dedicated Guernsey page with wind speeds, gusts and pressure charts — especially useful for sailors and pilots. It’s a separate service from the Met Office and BBC, so cross-referencing all three gives you the fullest picture.
How accurate is the 10-day weather forecast for Guernsey?
For Guernsey, a 10-day forecast is generally reliable for temperature trends but less so for exact rain timing beyond day 5. The island’s maritime climate can shift quickly, so check the live forecast above and the Guernsey Press weather page for daily updates.
For UK-wide comparisons, see our UK weather hub or check the 10 day weather forecast UK. If you’re considering mainland alternatives, Bristol Weather offers a similar coastal feel.