Sint Eustatius weather in September 2025

Q: How hot is it in Sint Eustatius in September?

Daytime temperatures usually reach 31°C in Sint Eustatius in September with very high heat and humidity, falling to 25°C at night.

Q: How sunny is it in Sint Eustatius in September?

There are normally 8 hours of bright sunshine each day in Sint Eustatius in September - that's 64% of daylight hours.

Q: How warm is the sea around Sint Eustatius in September?

The average sea temperature around Sint Eustatius in September is 29°C.

Q: Does it rain in Sint Eustatius in September?

There are usually 18 days with some rain in Sint Eustatius in September and the average monthly rainfall is 139mm.

Q: What is the chance of a hurricane in Sint Eustatius in September?

On average 1.2 days in September in Sint Eustatius are likely to be affected by the passage of one or more tropical storms.

Expect 31°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Sint Eustatius in September. Check more long-term weather averages for Sint Eustatius in September before you book your next holiday to Sint Eustatius in 2025/2026.

31
31°C max day temperature
8
8 hours of sunshine per day
18
18 days with some rainfall
25
25°C min night temperature
12
12 hours of daylight per day
VH
Very High heat & humidity
139
139 mm of monthly rainfall
11
11+ (Extreme) UV index
29
29°C sea temperature

More about Sint Eustatius

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The September weather guide for Sint Eustatius 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 Sint Eustatius in September?

Daytime temperatures usually reach 31°C in Sint Eustatius in September with very high heat and humidity, falling to 25°C at night.

How sunny is it in Sint Eustatius in September?

There are normally 8 hours of bright sunshine each day in Sint Eustatius in September - that's 64% of daylight hours.

How warm is the sea around Sint Eustatius in September?

The average sea temperature around Sint Eustatius in September is 29°C.

Does it rain in Sint Eustatius in September?

There are usually 18 days with some rain in Sint Eustatius in September and the average monthly rainfall is 139mm.

What is the chance of a hurricane in Sint Eustatius in September?

On average 1.2 days in September in Sint Eustatius are likely to be affected by the passage of one or more tropical storms.

Sint Eustatius September sunrise & sunset times

Browse the sunrise and sunset times for Sint Eustatius in September 2025. Select a month to view Sint Eustatius sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Monday, 1st September 2025	05:58	18:25
Monday, 15th September 2025	06:00	18:14
Tuesday, 30th September 2025	06:02	18:01

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Sint Eustatius - quick facts
Time difference	UK -4 hours
Language(s)	English, Dutch
Currency	United States Dollar
Electricity	A + B + C + F plug (110V)
Driving side	Right
Why visit?	Nature
Tourist info	St Eustatius Tourism Development Foundation