Guernsey weather live forecast

Today's maximum temperature in Guernsey is expected to be 68°F. Select a day from the live weather forecast for Guernsey (St Peter Port) for more weather parameters.

5-day weather forecast updated at 04:00 on Wednesday 3rd September 2025 GMT

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The 5-day weather forecast for Guernsey, represented by St Peter Port, (St Peter Port) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Guernsey weather forecast by day

Below are the detailed weather forecasts for Guernsey for the next 5 days. The forecasts shown are for St Peter Port and may not represent the whole of Guernsey. Browse more destinations in Guernsey to view more weather forecasts.

Guernsey weather for Wednesday 3rd September 2025

Expect isolated thunderstorms in Guernsey with a maximum temperature of 68°F, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 76% chance of some rain and a strong breeze of 25 mph from the south-west.

  • 68°F maximum temperature68
    °F maximum temperature
  • 61°F minimum temperature61
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 76% chance of some rain76
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Strong breeze of 25 mph from the South-West25
    mph wind from SW

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Guernsey weather for Thursday 4th September 2025

Expect sunshine and showers in Guernsey with a maximum temperature of 64°F, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 5-10 mm of rainfall expected with 59% chance of some rain and a fresh breeze of 20 mph from the west.

  • 64°F maximum temperature64
    °F maximum temperature
  • 59°F minimum temperature59
    °F minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 59% chance of some rain59
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Fresh breeze of 20 mph from the West20
    mph wind from W

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Guernsey weather for Friday 5th September 2025

Expect broken clouds in Guernsey with a maximum temperature of 64°F, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 14 mph from the west.

  • 64°F maximum temperature64
    °F maximum temperature
  • 59°F minimum temperature59
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 14 mph from the West14
    mph wind from W

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Guernsey weather for Saturday 6th September 2025

Expect scattered clouds in Guernsey with a maximum temperature of 72°F, maximum UV of 5 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 14 mph from the south-east.

  • 72°F maximum temperature72
    °F maximum temperature
  • 61°F minimum temperature61
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 72°F wind chill72
    °F wind chill
  • Moderate breeze of 14 mph from the South-East14
    mph wind from SE

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Guernsey weather for Sunday 7th September 2025

Expect mostly cloudy with light rain in Guernsey with a maximum temperature of 70°F, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 60% chance of some rain and a moderate breeze of 14 mph from the south.

  • 70°F maximum temperature70
    °F maximum temperature
  • 61°F minimum temperature61
    °F minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 60% chance of some rain60
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 14 mph from the South14
    mph wind from S

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