Brittany weather in December 2025

Expect daytime maximum temperatures of 10°C in Brittany, France in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 21 days with some rainfall and typically 137 mm of rainfall in the month.

  • 10°C maximum daytime temperature in December in Brittany (Brest)10
    10°C max day temperature
  • 2 hours of sunshine per day
  • 21 days with some rainfall in December in Brittany (Brest)21
    21 days with some rainfall
  • 5°C minimum night-time temperature in December in Brittany (Brest)5
    5°C min night temperature
  • 8 hours of daylight per day in December in Brittany (Brest)8
    8 hours of daylight per day
  • No heat & humidity in December in Brittany (Brest)0
    No heat & humidity
  • 137 mm monthly rainfall in December in Brittany (Brest)137
    137 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Brittany (Brest)1
    1 (Low) UV index
  • 12°C sea temperature in December in Brittany (Brest)12
    12°C sea temperature

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The December weather guide for Brittany (Brest) 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.

Top Brittany destinations

Below are average maximum temperatures at popular countries, regions and places in Brittany in December. Select a holiday destination to see more weather parameters.

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

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More about France

How warm is it in Brittany in December?

Daytime temperatures usually reach 10°C in Brest, Brittany in December, falling to 5°C at night.

How sunny is it in Brittany in December?

There are normally 2 hours of bright sunshine each day in Brest, Brittany in December - that's 24% of daylight hours.

How warm is the sea around Brittany in December?

The average sea temperature around Brest, Brittany in December is 12°C.

Does it rain in Brittany in December?

There are usually 21 days with some rain in Brest, Brittany in December and the average monthly rainfall is 137mm.

Brittany December sunrise & sunset times

Browse the sunrise and sunset times for Brittany in December 2025. Select a month to view Brittany sunrise and sunset times for the next 12 months. The Brittany sunrise and sunset times shown below are for Brest.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 08:48 17:25
Tuesday, 16th December 2025 09:03 17:24
Wednesday, 31st December 2025 09:09 17:33

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