Guernsey weather in October 2025

Expect 15°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Guernsey in October. Check more long-term weather averages for Guernsey in October before you book your next holiday to Guernsey in 2025/2026.

  • 15°C maximum daytime temperature in October in Guernsey (St Peter Port)15
    15°C max day temperature
  • 4 hours of sunshine per day
  • 15 days with some rainfall in October in Guernsey (St Peter Port)15
    15 days with some rainfall
  • 11°C minimum night-time temperature in October in Guernsey (St Peter Port)11
    11°C min night temperature
  • 11 hours of daylight per day in October in Guernsey (St Peter Port)11
    11 hours of daylight per day
  • No heat & humidity in October in Guernsey (St Peter Port)0
    No heat & humidity
  • 81 mm monthly rainfall in October in Guernsey (St Peter Port)81
    81 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in October in Guernsey (St Peter Port)2
    2 (Low) UV index
  • 16°C sea temperature in October in Guernsey (St Peter Port)16
    16°C sea temperature

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The October weather guide for Guernsey, represented by St Peter Port, (St Peter Port) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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

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How warm is it in Guernsey in October?

Daytime temperatures usually reach 15°C in St Peter Port, Guernsey in October, falling to 11°C at night.

How sunny is it in Guernsey in October?

There are normally 4 hours of bright sunshine each day in St Peter Port, Guernsey in October - that's 35% of daylight hours.

How warm is the sea around Guernsey in October?

The average sea temperature around St Peter Port, Guernsey in October is 16°C.

Does it rain in Guernsey in October?

There are usually 15 days with some rain in St Peter Port, Guernsey in October and the average monthly rainfall is 81mm.

Guernsey October sunrise & sunset times

Browse the sunrise and sunset times for Guernsey in October 2025. Select a month to view Guernsey sunrise and sunset times for the next 12 months. The Guernsey sunrise and sunset times shown below are for St Peter Port.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:10 17:48
Thursday, 16th October 2025 06:33 17:17
Friday, 31st October 2025 06:57 16:50

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