Climate & Weather Guide · GuernseyClimate & Weather Guide in Guernsey
Climate zones, seasonal temperatures, rainfall patterns, and best travel times
Guernsey, a small Channel Island off the coast of Normandy, France, features a mild **Oceanic climate** (Köppen Cfb) characterized by comfortable summers, cool winters, and consistent rainfall throughout the year. Influenced by the Gulf Stream, temperatures rarely drop below freezing or exceed 25°C, making it appealing for residents seeking temperate conditions without extremes. The island experiences windy conditions year-round, partly cloudy skies, and high humidity, with over 1,700 hours of sunshine annually. Annual rainfall averages around 850-900 mm, distributed evenly, supporting lush greenery. This stable climate suits expats preferring reliable mild weather for outdoor activities and low risk of severe storms.
Summer Average
15-21°C
Winter Average
5-10°C
Climate Types
Oceanic
800-900 mm
1,700-1,800 hours annually
70-85%
Regional Climate Variations
Island Regions
Guernsey's compact 65 km² area results in a uniform **Oceanic climate** across the island, with minimal variations between coastal and inland spots. Summers (June-August) bring comfortable highs of 18-21°C and gentle evenings around 15°C, ideal for beach outings and sailing. Winters (December-February) are mild at 5-10°C, seldom frosty, though frequent rain and strong winds add a brisk feel. Expect 80-100 rainy days yearly, with short showers rather than downpours. Sunshine peaks in summer with up to 8 hours daily, while high humidity keeps the air fresh. Residents appreciate the predictable mildness, perfect for gardening, cycling, and year-round coastal living without heatwaves or blizzards.
Mild, breezy, and green year-round with frequent light showers and comfortable temperatures, offering a refreshing coastal vibe ideal for outdoor lifestyles.
Guernsey's uniform Oceanic climate delivers mild summers up to 21°C and cool winters around 7°C with moderate rainfall of 800-900 mm annually. The small island's homogeneity means one consistent zone, free from extremes, appealing to expats valuing stable, temperate weather. Windy conditions and ample greenery enhance its charm for relaxed island living.
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