Guernsey weather in August 2024

Expect 20°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Guernsey in August. Check more long-term weather averages for Guernsey in August before you book your next holiday to Guernsey in 2024/2025.

  • 20°C maximum daytime temperature in August in Guernsey (St Peter Port)20
    20°C max day temperature
  • 7 hours of sunshine per day
  • 11 days with some rainfall in August in Guernsey (St Peter Port)11
    11 days with some rainfall
  • 14°C minimum night-time temperature in August in Guernsey (St Peter Port)14
    14°C min night temperature
  • 14 hours of daylight per day in August in Guernsey (St Peter Port)14
    14 hours of daylight per day
  • No heat & humidity in August in Guernsey (St Peter Port)0
    No heat & humidity
  • 45 mm monthly rainfall in August in Guernsey (St Peter Port)45
    45 mm of monthly rainfall
  • UV (maximum) index 6 (High) in August in Guernsey (St Peter Port)6
    6 (High) UV index
  • 17°C sea temperature in August in Guernsey (St Peter Port)17
    17°C sea temperature

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