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Guernsey Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Guernsey year round climate
Spring (March–May): Average 48–55°F, mild climate with occasional showers but generally sunny. Popular activities: Coastal walks, exploring island attractions. Suggested clothing: Light jacket, comfortable trousers or skirt, and warm underlayers.
Summer (June–August): Average 59–63°F, warm and pleasant climate, sunny with occasional showers. Popular activities: Beach relaxation, water sports, outdoor picnics. Suggested clothing: Short-sleeved shirts, shorts, light sandals, and a light jacket for cooler evenings.
Autumn (September–November): Average 51–61°F, gradually cooling climate with increasing rainfall, especially in November. Popular activities: Enjoying autumn scenery, museum visits. Suggested clothing: Long-sleeved shirts, light jacket, comfortable trousers, and a waterproof jacket.
Winter (December–February): Average 45–48°F, cold and damp climate with frequent rain. Popular activities: Indoor activities, trying local cuisine. Suggested clothing: Warm jacket, sweater, trousers, waterproof jacket and shoes.
Guernsey climatological average
Annual average temperature: approx. 54.3°F / Annual rainfall: approx. 1029 mm / Summer humidity: 65%–75% / Rainiest month: November
Guernsey monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
45.5°F
115.5
February
47.5°F
68.2
March
48°F
99.2
April
49.8°F
58.8
May
55°F
32.2
June
59.7°F
35
July
63°F
40.5
August
63.9°F
58.8
September
61.5°F
92.2
October
58.1°F
108.4
November
52°F
171.2
December
48°F
149
Guernsey weather for the next seven days
10/5
Monday
Sunny
62.9°F/61.9°F
10/6
Tuesday
Sunny
64.7°F/60.5°F
10/7
Wednesday
Light rain
61.8°F/56.6°F
10/8
Thursday
Patchy rain nearby
58.6°F/55.8°F
10/9
Friday
Patchy rain nearby
62°F/58.9°F
10/10
Saturday
Patchy rain nearby
61°F/56.8°F
10/11
Sunday
Patchy rain nearby
58.5°F/58°F
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