Antigua weather in September
Antigua averages 30°C by day and 26°C at night in September, with the sea at 30°C and about 114 mm of rain in the month.
Day
30°C
Night
26°C
Sea
30°C
Rain
114 mm
Flight from London
8h
What September feels like
September is hot in Antigua: proper beach weather.
The sea is warm at 30°C: comfortable for long swims.
Expect some rainy spells: about 114 mm falls in the month.
That is 10°C warmer than an average September day in London.
Of the 56 sun destinations we track, Antigua is the #18 warmest in September.
Going to Antigua in September?
Share the TikToks and Instagram Reels you've saved for Antigua to Dream Trip. It finds the places, pins them on a map and builds your days around them.
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.
| Month | Day | Night | Sea | Rain |
|---|---|---|---|---|
| January | 28°C | 24°C | 27°C | 43 mm |
| February | 27°C | 24°C | 27°C | 52 mm |
| March | 28°C | 24°C | 27°C | 47 mm |
| April | 28°C | 24°C | 28°C | 59 mm |
| May | 29°C | 25°C | 29°C | 68 mm |
| June | 30°C | 26°C | 29°C | 63 mm |
| July | 30°C | 26°C | 29°C | 83 mm |
| August | 30°C | 26°C | 30°C | 100 mm |
| September | 30°C | 26°C | 30°C | 114 mm |
| October | 30°C | 26°C | 30°C | 117 mm |
| November | 29°C | 25°C | 29°C | 101 mm |
| December | 28°C | 25°C | 28°C | 48 mm |
Antigua in September: quick answers
Is Antigua hot in September?
September is hot in Antigua: proper beach weather. 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?
Expect some rainy spells: about 114 mm falls in the month.
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. Rain is the average monthly total. 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.
