Climate & Weather Guide in Jersey

Climate zones, seasonal temperatures, rainfall patterns, and best travel times

Jersey (ISO2: JE) is a small, homogeneous island in the North Atlantic with a single Köppen climate type: Cfb (Oceanic). The climate features mild summers, cool winters, and consistent rainfall year-round. Average summer temperatures range from 17°C to 21°C, while winter temperatures hover between 4°C and 9°C. Annual rainfall is approximately 850–950 mm, classified as moderate. Sunshine averages around 1,600–1,700 hours annually, and average humidity is 75–80%. The climate is stable, with no extreme heat or cold, making it comfortable for residents who prefer mild, predictable weather without seasonal extremes.

Summer Average

17-21°C

Winter Average

4-9°C

Climate Types

Oceanic

Annual Rainfall

850-950 mm

Sunshine Hours

1,600-1,700 hrs/yr

Average Humidity

75-80%

Regional Climate Variations

Island Regions

Jersey is a small island with uniform climate across its entire area. The Oceanic climate (Cfb) ensures mild temperatures year-round, with summer highs rarely exceeding 21°C and winter lows seldom dropping below 4°C. Rainfall is moderate and evenly distributed, supporting lush greenery. The island experiences frequent cloud cover and moderate winds from the Atlantic, creating a fresh, maritime atmosphere. There are no significant microclimates or regional variations, making the climate consistent for all residents regardless of location.

Summer:17-21°C

Winter:4-9°C

Moderate rainfall

Fresh, maritime, and consistently mild with moderate winds and frequent cloud cover. The climate feels stable and comfortable, ideal for those who dislike extreme heat or cold.

Jersey offers a single, stable Oceanic climate with mild summers, cool winters, and moderate rainfall year-round. Its small size ensures uniform weather across the island, making it appealing for residents who prefer predictable, temperate conditions without seasonal extremes.

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