St Peter Port weather in December 2025

Expect daytime maximum temperatures of 10°C in St Peter Port, Guernsey in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 19 days with some rainfall and typically 100 mm of rainfall in the month.

  • 10°C maximum daytime temperature in December in St Peter Port10
    10°C max day temperature
  • 2 hours of sunshine per day
  • 19 days with some rainfall in December in St Peter Port19
    19 days with some rainfall
  • 6°C minimum night-time temperature in December in St Peter Port6
    6°C min night temperature
  • 8 hours of daylight per day in December in St Peter Port8
    8 hours of daylight per day
  • No heat & humidity in December in St Peter Port0
    No heat & humidity
  • 100 mm monthly rainfall in December in St Peter Port100
    100 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in St Peter Port1
    1 (Low) UV index
  • 12°C sea temperature in December in St Peter Port12
    12°C sea temperature

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The December 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 St Peter Port in December?

Daytime temperatures usually reach 10°C in St Peter Port in December, falling to 6°C at night.

How sunny is it in St Peter Port in December?

There are normally 2 hours of bright sunshine each day in St Peter Port in December - that's 21% of daylight hours.

How warm is the sea around St Peter Port in December?

The average sea temperature around St Peter Port in December is 12°C.

Does it rain in St Peter Port in December?

There are usually 19 days with some rain in St Peter Port in December and the average monthly rainfall is 100mm.

St Peter Port December sunrise & sunset times

Browse the sunrise and sunset times for St Peter Port in December 2025. Select a month to view St Peter Port sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:45 16:13
Tuesday, 16th December 2025 08:00 16:11
Wednesday, 31st December 2025 08:06 16:20

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