Monte-Carlo weather in May 2025

Expect 18°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Monte-Carlo in May. Check more long-term weather averages for Monte-Carlo in May before you book your next holiday to Monaco in 2025/2026.

  • 18°C maximum daytime temperature in May in Monte-Carlo18
    18°C max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in May in Monte-Carlo10
    10 days with some rainfall
  • 11°C minimum night-time temperature in May in Monte-Carlo11
    11°C min night temperature
  • 15 hours of daylight per day in May in Monte-Carlo15
    15 hours of daylight per day
  • No heat & humidity in May in Monte-Carlo0
    No heat & humidity
  • 65 mm monthly rainfall in May in Monte-Carlo65
    65 mm of monthly rainfall
  • UV (maximum) index 7 (High) in May in Monte-Carlo7
    7 (High) UV index
  • 17°C sea temperature in May in Monte-Carlo17
    17°C sea temperature

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The May weather guide for Monaco, represented by Monte-Carlo, (Monte-Carlo) 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 hot is it in Monte-Carlo in May?

Daytime temperatures usually reach 18°C in Monte-Carlo in May, falling to 11°C at night.

How sunny is it in Monte-Carlo in May?

There are normally 8 hours of bright sunshine each day in Monte-Carlo in May - that's 54% of daylight hours.

How warm is the sea around Monte-Carlo in May?

The average sea temperature around Monte-Carlo in May is 17°C.

Does it rain in Monte-Carlo in May?

There are usually 10 days with some rain in Monte-Carlo in May and the average monthly rainfall is 65mm.

Monte-Carlo May sunrise & sunset times

Browse the sunrise and sunset times for Monte-Carlo in May 2025. Select a month to view Monte-Carlo sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:22 19:33
Friday, 16th May 2025 05:04 19:50
Saturday, 31st May 2025 04:52 20:05

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