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Antigua weather in September 2025
Expect daytime maximum temperatures of 31°C in Antigua in September and very high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 17 days with some rainfall and typically 140 mm of rainfall in the month.
- 31°C max day temperature
31 - 7 hours of sunshine per day
- 17 days with some rainfall
17 - 25°C min night temperature
25 - 12 hours of daylight per day
12 - Very High heat & humidity
VH - 140 mm of monthly rainfall
140 - 11+ (Extreme) UV index
11 - 29°C sea temperature
29
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Recommended for Antigua
The September weather guide for Antigua (St John's) 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.
Top Antigua destinations
Below are average maximum temperatures at popular countries, regions and places in Antigua in September. Select a holiday destination to see more weather parameters.
- Codrington, Barbuda
- Dickenson's Bay
- English Harbour
- Falmouth Harbour
- Five Islands
- Jolly Harbour
- Long Bay
- Mamora Bay
- Soldiers Bay
- St John's
All Antigua destinations
- Codrington, Barbuda
- Dickenson's Bay
- English Harbour
- Falmouth Harbour
- Five Islands
- Jolly Harbour
- Long Bay
- Mamora Bay
- Soldiers Bay
- St John's
Metric (°C / mm) | Imperial (°F / inches)
More about Antigua
How hot is it in Antigua in September?
Daytime temperatures usually reach 31°C in St John's, Antigua in September with very high heat and humidity, falling to 25°C at night.
How sunny is it in Antigua in September?
There are normally 7 hours of bright sunshine each day in St John's, Antigua in September - that's 61% of daylight hours.
How warm is the sea around Antigua in September?
The average sea temperature around St John's, Antigua in September is 29°C.
Does it rain in Antigua in September?
There are usually 17 days with some rain in St John's, Antigua in September and the average monthly rainfall is 140mm.
What is the chance of a hurricane in Antigua in September?
On average 1.3 days in September in St John's, Antigua are likely to be affected by the passage of one or more tropical storms.
Antigua September sunrise & sunset times
Browse the sunrise and sunset times for Antigua in September 2025. Select a month to view Antigua sunrise and sunset times for the next 12 months. The Antigua sunrise and sunset times shown below are for St John's.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Monday, 1st September 2025 | 05:54 | 18:21 |
| Monday, 15th September 2025 | 05:56 | 18:09 |
| Tuesday, 30th September 2025 | 05:57 | 17:57 |
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