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Guernsey

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Guernsey Weather and climate

Data source:Meteostat
Update date:2025-09

Guernsey year round climate
  • Spring (March–May): Average 8.9–12.8°C, 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 15.4–17.7°C, 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 11.1–16.4°C, 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 7.5–8.9°C, 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. 12.4°C / Annual rainfall: approx. 1029 mm / Summer humidity: 65%–75% / Rainiest month: November

Guernsey monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
7.5°C
115.5
February
8.6°C
68.2
March
8.9°C
99.2
April
9.9°C
58.8
May
12.8°C
32.2
June
15.4°C
35
July
17.2°C
40.5
August
17.7°C
58.8
September
16.4°C
92.2
October
14.5°C
108.4
November
11.1°C
171.2
December
8.9°C
149
Guernsey weather for the next seven days
10/14
Tuesday
Patchy rain nearby
15.8°C/14.8°C
10/15
Wednesday
Patchy rain nearby
15.3°C/14.6°C
10/16
Thursday
Patchy rain nearby
15.9°C/14.8°C
10/17
Friday
Patchy rain nearby
15.7°C/14.1°C
10/18
Saturday
Sunny
15.3°C/12.8°C
10/19
Sunday
Partly Cloudy
14.8°C/13.2°C
10/20
Monday
Patchy rain nearby
14.7°C/14.3°C