St Martin weather in August 2025

Expect 31°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in St Martin in August. Check more long-term weather averages for St Martin in August before you book your next holiday to St Martin in 2025/2026.

  • 31°C maximum daytime temperature in August in St Martin31
    31°C max day temperature
  • 9 hours of sunshine per day
  • 19 days with some rainfall in August in St Martin19
    19 days with some rainfall
  • 25°C minimum night-time temperature in August in St Martin25
    25°C min night temperature
  • 13 hours of daylight per day in August in St Martin13
    13 hours of daylight per day
  • Very high heat & humidity in August in St MartinVH
    Very High heat & humidity
  • 100 mm monthly rainfall in August in St Martin100
    100 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in St Martin11
    11+ (Extreme) UV index
  • 28°C sea temperature in August in St Martin28
    28°C sea temperature

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The August 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 August?

Daytime temperatures usually reach 31°C in St Martin in August with very high heat and humidity, falling to 25°C at night.

How sunny is it in St Martin in August?

There are normally 9 hours of bright sunshine each day in St Martin in August - that's 67% of daylight hours.

How warm is the sea around St Martin in August?

The average sea temperature around St Martin in August is 28°C.

Does it rain in St Martin in August?

There are usually 19 days with some rain in St Martin in August and the average monthly rainfall is 100mm.

What is the chance of a hurricane in St Martin in August?

On average less than 1 day in August in St Martin is likely to be affected by the passage of one or more tropical storms.

St Martin August sunrise & sunset times

Browse the sunrise and sunset times for St Martin in August 2025. Select a month to view St Martin sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:51 18:46
Saturday, 16th August 2025 05:55 18:38
Sunday, 31st August 2025 05:58 18:27

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