Climate & Weather Guide · JerseyClimate & Weather Guide in Jersey
Climate zones, seasonal temperatures, rainfall patterns, and best travel times
Jersey, the largest of the Channel Islands, features a mild **oceanic climate** (Köppen Cfb) influenced by the Gulf Stream, offering temperate conditions year-round ideal for residents and expats. Summers are comfortably warm without extremes, while winters remain above freezing with frequent mild days. Annual rainfall averages around 918 mm, distributed throughout the year with wetter winters, complemented by over 2,000 sunshine hours. Humidity stays moderate, and sea temperatures support swimming from late spring. Recent data (1991-2020 and 2024) shows warming trends, with 2024 averaging 12.71°C, making it appealing for those seeking stable, green landscapes and coastal living without continental harshness.
Summer Average
16-19°C
Winter Average
7-10°C
Climate Types
Oceanic
900-950 mm
2,000-2,100 hours annually
75-85%
Regional Climate Variations
Jersey Island
As a compact island of just 116 km², Jersey exhibits uniform oceanic climate across its terrain, from coastal cliffs to central valleys. Summers (July-August) see average highs of 18-19°C with gentle breezes, perfect for outdoor activities and beach days. Winters bring averages of 7-10°C, rarely dipping below 5°C, with overcast skies but minimal snow. Rainfall totals ~918 mm annually, peaking in autumn-winter (100-126 mm/month), while summers are drier (~45-62 mm). Sunshine exceeds 2,000 hours yearly, fostering lush greenery and vibrant agriculture. Recent warming adds ~0.5°C to averages, enhancing appeal for expats enjoying mild, reliable weather.
Mild breezy summers invite coastal walks and sailing; cozy damp winters suit indoor living with fresh sea air and rare frosts—ideal for year-round outdoor enthusiasts.
Jersey's homogeneous oceanic climate delivers mild temperatures (7-19°C seasonally) and moderate rainfall, with no significant regional variations due to its small 116 km² size. This stability appeals to residents and expats seeking temperate island living without extremes. Sunshine and Gulf Stream warmth support agriculture, beaches, and comfortable daily life year-round.
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