George Town weather in September 2025

Expect 90°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in George Town in September. Check more long-term weather averages for George Town in September before you book your next holiday to Cayman Islands in 2025/2026.

  • 90°F maximum daytime temperature in September in George Town90
    90°F max day temperature
  • 8 hours of sunshine per day
  • 16 days with some rainfall in September in George Town16
    16 days with some rainfall
  • 77°F minimum night-time temperature in September in George Town77
    77°F min night temperature
  • 12 hours of daylight per day in September in George Town12
    12 hours of daylight per day
  • Very high heat & humidity in September in George TownVH
    Very High heat & humidity
  • 8.2 inches monthly rainfall in September in George Town8.2
    8.2 inches of monthly rainfall
  • UV (maximum) index 11 (Extreme) in September in George Town11
    11 (Extreme) UV index
  • 86°F sea temperature in September in George Town86
    86°F sea temperature

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The September weather guide for Cayman Islands, represented by George Town, (George Town) 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)

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How hot is it in George Town in September?

Daytime temperatures usually reach 90°F in George Town in September with very high heat and humidity, falling to 77°F at night.

How sunny is it in George Town in September?

There are normally 8 hours of bright sunshine each day in George Town in September - that's 61% of daylight hours.

How warm is the sea around George Town in September?

The average sea temperature around George Town in September is 86°F.

Does it rain in George Town in September?

There are usually 16 days with some rain in George Town in September and the average monthly rainfall is 8.2 inches.

What is the chance of a hurricane in George Town in September?

On average less than 1 day in September in George Town is likely to be affected by the passage of one or more tropical storms.

George Town September sunrise & sunset times

Browse the sunrise and sunset times for George Town in September 2025. Select a month to view George Town sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:10 18:40
Monday, 15th September 2025 06:13 18:28
Tuesday, 30th September 2025 06:16 18:14

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