Falmouth Harbour weather in September 2025

Q: How hot is it in Falmouth Harbour in September?

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

Q: How sunny is it in Falmouth Harbour in September?

There are normally 7 hours of bright sunshine each day in Falmouth Harbour in September - that's 61% of daylight hours.

Q: How warm is the sea around Falmouth Harbour in September?

The average sea temperature around Falmouth Harbour in September is 29°C.

Q: Does it rain in Falmouth Harbour in September?

There are usually 16 days with some rain in Falmouth Harbour in September and the average monthly rainfall is 140mm.

Q: What is the chance of a cyclone in Falmouth Harbour in September?

On average 1.3 days in September in Falmouth Harbour are likely to be affected by the passage of one or more tropical storms.

Expect 88°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Falmouth Harbour in September. Check more long-term weather averages for Falmouth Harbour in September before you book your next holiday to Antigua in 2025/2026.

88
88°F max day temperature
7
7 hours of sunshine per day
16
16 days with some rainfall
77
77°F min night temperature
12
12 hours of daylight per day
H
High heat & humidity
5.5
5.5 inches of monthly rainfall
11
11+ (Extreme) UV index
84
84°F sea temperature

More about Falmouth Harbour

Falmouth Harbour by month

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The September weather guide for Antigua (Falmouth Harbour) 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) | Imperial (°F)

More about Antigua

How hot is it in Falmouth Harbour in September?

Daytime temperatures usually reach 88°F in Falmouth Harbour in September with high heat and humidity, falling to 77°F at night.

How sunny is it in Falmouth Harbour in September?

There are normally 7 hours of bright sunshine each day in Falmouth Harbour in September - that's 61% of daylight hours.

How warm is the sea around Falmouth Harbour in September?

The average sea temperature around Falmouth Harbour in September is 84°F.

Does it rain in Falmouth Harbour in September?

There are usually 16 days with some rain in Falmouth Harbour in September and the average monthly rainfall is 5.5 inches.

What is the chance of a hurricane in Falmouth Harbour in September?

On average 1.3 days in September in Falmouth Harbour are likely to be affected by the passage of one or more tropical storms.

Falmouth Harbour September sunrise & sunset times

Browse the sunrise and sunset times for Falmouth Harbour in September 2025. Select a month to view Falmouth Harbour 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	05:54	18:20
Monday, 15th September 2025	05:55	18:09
Tuesday, 30th September 2025	05:57	17:57

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Antigua - quick facts
Flight time^✝	9 hours
Time difference	UK -4 hours
Language(s)	English
Currency	Eastern Caribbean Dollar
Electricity	A + B plug (230V)
Driving side	Left
Why visit?	Beaches Nature Nightlife
Tourist info	Antigua Barbuda Tourism Authority