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Guernsey Climate by Month

The temperature in Guernsey varies moderately throughout the year. The temperatures shift from pleasant to cold. It maintains moderate precipitation patterns. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

The weather in Guernsey changes moderately throughout the year, offering enough variation to appreciate each season. Typically, daytime temperatures range from a pleasant 19°C in August to a chilly 11°C in the coolest month, February. Nights are cooler, with temperatures generally dropping to 7°C, particularly during the colder months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Generally, Guernsey has a moderate amount of precipitation, averaging 964 mm of rainfall annually. The climate in Guernsey shows significant variation throughout the year. Expect high rainfall in December, with an average of 131 mm of precipitation over 19 rainy days. In contrast, July offers drier and sunnier days, with around 41 mm of rainfall over 10 rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

For those who appreciate different seasons, Guernsey serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 8.4 hours of sunshine daily, and embrace the darker days in December, offering only 2.0 hours of daily sunlight.

Monthly hours of sunshine

Daily hours of sunshine

The best time of year to visit Guernsey in the United Kingdom

Other facts from our historical weather data:
  • Which is the warmest month in Guernsey?
    August has an average maximum temperature of 19°C and is the warmest month of the year.
  • Which is the coldest month in Guernsey?
    The coldest month is February with an average maximum temperature of 11°C.
  • Which is the wettest month in Guernsey?
    December tops the wettest month list with 131 mm of rainfall.
  • Which is the driest month in Guernsey?
    July is the driest month with 41 mm of precipitation.
  • Which is the sunniest month in Guernsey?
    July is the sunniest month with an average of 252 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Guernsey

    Wed   Dec 04
    12°C | 7°C
    S 40 km/h
    1 mm
    broken clouds and no rain

    broken clouds and no rain

    Thu   Dec 05
    14°C | 11°C
    SW 47 km/h
    4.6 mm
    overcast and slight rain

    overcast and slight rain

    Fri   Dec 06
    12°C | 9°C
    S 43 km/h
    6.2 mm
    overcast and rain

    overcast and rain