- Save up to 50% on all inclusive Caribbean holidays
- Plus save up to £800 off select rooms & durations
- Extra 5% discount on selected resorts
St John's weather in September 2025
Expect 31°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in St John's in September. Check more long-term weather averages for St John's in September before you book your next holiday to Antigua in 2025/2026.
- 3131°C max day temperature
- 7 hours of sunshine per day
- 1717 days with some rainfall
- 2525°C min night temperature
- 1212 hours of daylight per day
- VHVery High heat & humidity
- 140140 mm of monthly rainfall
- 1111+ (Extreme) UV index
- 2929°C sea temperature
More about St John's
- Overview
- Best time to visit
- Weather by month
- 5-day weather forecast
- Destinations
- Travel advice
- Deals & discounts
St John's by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Antigua
Expires at 23:59 on Thursday 31st Oct 2024 · View all Sandals offers
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.
Metric (°C / mm) | Imperial (°F / inches)
More about Antigua
How hot is it in St John's in September?
Daytime temperatures usually reach 31°C in St John's in September with very high heat and humidity, falling to 25°C at night.
How sunny is it in St John's in September?
There are normally 7 hours of bright sunshine each day in St John's in September - that's 61% of daylight hours.
How warm is the sea around St John's in September?
The average sea temperature around St John's in September is 29°C.
Does it rain in St John's in September?
There are usually 17 days with some rain in St John's in September and the average monthly rainfall is 140mm.
What is the chance of a hurricane in St John's in September?
On average 1.3 days in September in St John's are likely to be affected by the passage of one or more tropical storms.
St John's September sunrise & sunset times
Browse the sunrise and sunset times for St John's in September 2025. Select a month to view St John's sunrise and sunset times for the next 12 months.
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 |
Be inspired
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Related posts
Popular travel offers
Explore holidays in the sun for less
- Beach holidays
- Family holidays
- City breaks
- Summer holidays
- Winter sun holidays
- Holiday offers
- Top travel brands
- Airlines & flights
- Discount hotels
- Airport parking deals
- TUI
- Jet2holidays
- easyJet holidays
- Love Holidays
- British Airways
Airport parking
- Manchester Airport
- Stansted Airport
- Bristol Airport
- Luton Airport
- Birmingham Airport
- Edinburgh Airport
- Gatwick Airport
- Glasgow Airport
- Newcastle Airport
Airport lounges
- Manchester Airport
- Birmingham Airport
- Bristol Airport
- Edinburgh Airport
- Glasgow Airport
- Heathrow Airport
- Newcastle Airport
- Stansted Airport
- Gatwick Airport