St Martin weather in May 2026

Expect daytime maximum temperatures of 30°C in St Martin in May and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 15 days with some rainfall and typically 95 mm of rainfall in the month.

  • 30°C maximum daytime temperature in May in St Martin30
    30°C max day temperature
  • 8 hours of sunshine per day
  • 15 days with some rainfall in May in St Martin15
    15 days with some rainfall
  • 24°C minimum night-time temperature in May in St Martin24
    24°C min night temperature
  • 13 hours of daylight per day in May in St Martin13
    13 hours of daylight per day
  • High heat & humidity in May in St MartinH
    High heat & humidity
  • 95 mm monthly rainfall in May in St Martin95
    95 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in St Martin11
    11+ (Extreme) UV index
  • 27°C sea temperature in May in St Martin27
    27°C sea temperature

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The May weather guide for St Martin 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 St Martin in May?

Daytime temperatures usually reach 30°C in St Martin in May with high heat and humidity, falling to 24°C at night.

How sunny is it in St Martin in May?

There are normally 8 hours of bright sunshine each day in St Martin in May - that's 62% of daylight hours.

How warm is the sea around St Martin in May?

The average sea temperature around St Martin in May is 27°C.

Does it rain in St Martin in May?

There are usually 15 days with some rain in St Martin in May and the average monthly rainfall is 95mm.

St Martin May sunrise & sunset times

Browse the sunrise and sunset times for St Martin in May 2026. Select a month to view St Martin sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 05:46 18:34
Saturday, 16th May 2026 05:39 18:39
Sunday, 31st May 2026 05:36 18:44

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