St Peter Port weather live forecast

Today's maximum temperature in St Peter Port is expected to be 19°C. Select a day from the live weather forecast for St Peter Port, Guernsey for more weather parameters.

5-day weather forecast updated at 04:00 on Wednesday 17th September 2025 GMT

More about St Peter Port

St Peter Port by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Guernsey

Omio: Cheapest & fastest travel finder

  • Compare ticket prices for flights, trains & coaches
  • Choose your preferred mode of transport & book online
  • Including routes from over 150 airlines & transport providers
Go to Omio deal >>

View all Omio offers

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.

St Peter Port weather forecast by day

Below are the detailed weather forecasts for St Peter Port for the next 5 days.

St Peter Port weather for Thursday 18th September 2025

Expect broken clouds in St Peter Port, Guernsey with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the south-west.

  • 19°C maximum temperature19
    °C maximum temperature
  • 16°C minimum temperature16
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 19°C wind chill19
    °C wind chill
  • Moderate breeze of 22 kph from the South-West22
    kph wind from SW

Back to top

St Peter Port weather for Friday 19th September 2025

Expect scattered clouds in St Peter Port, Guernsey with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south.

  • 18°C maximum temperature18
    °C maximum temperature
  • 14°C minimum temperature14
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    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
  • Light breeze of 11 kph from the South11
    kph wind from S

Back to top

St Peter Port weather for Saturday 20th September 2025

Expect mostly cloudy with light rain in St Peter Port, Guernsey with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 40% chance of some rain and a moderate breeze of 28 kph from the south-west.

  • 18°C maximum temperature18
    °C maximum temperature
  • 14°C minimum temperature14
    °C 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)
  • 40% chance of some rain40
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 28 kph from the South-West28
    kph wind from SW

Back to top

St Peter Port weather for Sunday 21st September 2025

Expect mostly cloudy with rain in St Peter Port, Guernsey with a maximum temperature of 16°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 61% chance of some rain and a moderate breeze of 27 kph from the south-west.

  • 16°C maximum temperature16
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 61% chance of some rain61
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 16°C wind chill16
    °C wind chill
  • Moderate breeze of 27 kph from the South-West27
    kph wind from SW

Back to top

St Peter Port weather for Monday 22nd September 2025

Expect mostly cloudy with light rain in St Peter Port, Guernsey with a maximum temperature of 16°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 54% chance of some rain and a fresh breeze of 30 kph from the north-east.

  • 16°C maximum temperature16
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 54% chance of some rain54
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Fresh breeze of 30 kph from the North-East30
    kph wind from NE

Back to top

KAYAK: Top UK travel deals of the day

  • Save on UK travel with KAYAK's deals of the day
  • Find deals for destinations around the world
  • Filter by travel deal type, budget & month
Go to KAYAK deal >>

View all KAYAK offers

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

Related posts

Popular travel offers

Explore holiday destinations

More holidays

Save with latest deals & discounts

More deals

Airport parking

More parking

Airport lounges

More lounges

Top ^