Antigua weather in September
Antigua averages 30°C by day and 26°C at night in September, with the sea at 30°C and 22 days with at least 1 mm of rain.
Day
30°C
Night
26°C
Sea
30°C
Rainy days
22
Flight from London
8h
What September feels like
September is hot but wet in Antigua: rainy season, so pack for showers.
The sea is warm at 30°C: comfortable for long swims.
It is rainy season, with rain on about 22 days.
Of the 48 sun destinations we track, Antigua is the #14 warmest in September.
Want it warmer in September?
These are hotter than Antigua this month for at most an hour and a half more flying:
Antigua weather by month
September is highlighted. Compare with August and October, or see the full year in Antigua.
Antigua in September: quick answers
Is Antigua hot in September?
September is hot but wet in Antigua: rainy season, so pack for showers. Average highs are 30°C and lows 26°C.
Can you swim in Antigua in September?
The sea is warm at 30°C: comfortable for long swims.
Does it rain in Antigua in September?
It is rainy season, with rain on about 22 days.
What is the warmest month in Antigua?
August, at an average high of 30°C. The coolest is February at 27°C.
How long is the flight to Antigua from the UK?
About 8h direct from London, estimated from the 6,559 km distance. Check your airline for exact times.
Still choosing? See where is hot in September for every destination ranked by temperature, sea and flight time.
How we measured this
Averages of every day in September from 2016 to 2025, from the Open-Meteo historical weather archive (ECMWF ERA5 reanalysis). Sea temperature is the 2023 to 2025 average from the Open-Meteo marine archive. A rainy day has at least 1 mm of rain. Reanalysis describes an area about 25 km across, so sheltered resorts can run a degree or two warmer. Flight time is a distance-based estimate from London Heathrow.
Planning Antigua in September?
Save the restaurants, beaches and views you find on TikTok and Instagram for Antigua straight to a map, then let Dream Trip turn them into a day-by-day plan.
