Falmouth Harbour weather in September 2025

Expect 31°C 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.

  • 31°C maximum daytime temperature in September in Falmouth Harbour31
    31°C max day temperature
  • 7 hours of sunshine per day
  • 16 days with some rainfall in September in Falmouth Harbour16
    16 days with some rainfall
  • 25°C minimum night-time temperature in September in Falmouth Harbour25
    25°C min night temperature
  • 12 hours of daylight per day in September in Falmouth Harbour12
    12 hours of daylight per day
  • High heat & humidity in September in Falmouth HarbourH
    High heat & humidity
  • 140 mm monthly rainfall in September in Falmouth Harbour140
    140 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Falmouth Harbour11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in Falmouth Harbour29
    29°C 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 / mm)  |  Imperial (°F / inches)

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More about Antigua

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.

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 29°C.

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.

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.

JanFebMarAprMayJunJulAugSepOctNovDec

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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