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St Martin weather in August 2025
Expect daytime maximum temperatures of 31°C in St Martin in August and very high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average with 19 days with some rainfall and typically 100 mm of rainfall in the month.
- 31°C max day temperature
31 - 9 hours of sunshine per day
- 19 days with some rainfall
19 - 25°C min night temperature
25 - 13 hours of daylight per day
13 - Very High heat & humidity
VH - 100 mm of monthly rainfall
100 - 11+ (Extreme) UV index
11 - 28°C sea temperature
28
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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)
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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