Brittany weather in May 2025

Expect 15°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Brittany in May. Check more long-term weather averages for Brittany in May before you book your next holiday to Brittany in 2025/2026.

  • 15°C maximum daytime temperature in May in Brittany (Brest)15
    15°C max day temperature
  • 7 hours of sunshine per day
  • 16 days with some rainfall in May in Brittany (Brest)16
    16 days with some rainfall
  • 8°C minimum night-time temperature in May in Brittany (Brest)8
    8°C min night temperature
  • 15 hours of daylight per day in May in Brittany (Brest)15
    15 hours of daylight per day
  • No heat & humidity in May in Brittany (Brest)0
    No heat & humidity
  • 69 mm monthly rainfall in May in Brittany (Brest)69
    69 mm of monthly rainfall
  • UV (maximum) index 6 (High) in May in Brittany (Brest)6
    6 (High) UV index
  • 13°C sea temperature in May in Brittany (Brest)13
    13°C sea temperature

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The May 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 May. Select a holiday destination to see more weather parameters.

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

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How warm is it in Brittany in May?

Daytime temperatures usually reach 15°C in Brest, Brittany in May, falling to 8°C at night.

How sunny is it in Brittany in May?

There are normally 7 hours of bright sunshine each day in Brest, Brittany in May - that's 45% of daylight hours.

How warm is the sea around Brittany in May?

The average sea temperature around Brest, Brittany in May is 13°C.

Does it rain in Brittany in May?

There are usually 16 days with some rain in Brest, Brittany in May and the average monthly rainfall is 69mm.

Brittany May sunrise & sunset times

Browse the sunrise and sunset times for Brittany in May 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
Thursday, 1st May 2025 05:59 20:32
Friday, 16th May 2025 05:36 20:53
Saturday, 31st May 2025 05:22 21:10

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