Naples weather in September 2025

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

  • 90°F maximum daytime temperature in September in Naples90
    90°F max day temperature
  • 8 hours of sunshine per day
  • 15 days with some rainfall in September in Naples15
    15 days with some rainfall
  • 73°F minimum night-time temperature in September in Naples73
    73°F min night temperature
  • 12 hours of daylight per day in September in Naples12
    12 hours of daylight per day
  • Very high heat & humidity in September in NaplesVH
    Very High heat & humidity
  • 8.1 inches monthly rainfall in September in Naples8.1
    8.1 inches of monthly rainfall
  • UV (maximum) index 10 (Very High) in September in Naples10
    10 (Very High) UV index
  • 84°F sea temperature in September in Naples84
    84°F sea temperature

More about Naples

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The September weather guide for Florida (Naples) 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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More about Florida

How hot is it in Naples in September?

Daytime temperatures usually reach 90°F in Naples in September with very high heat and humidity, falling to 73°F at night.

How sunny is it in Naples in September?

There are normally 8 hours of bright sunshine each day in Naples in September - that's 68% of daylight hours.

How warm is the sea around Naples in September?

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

Does it rain in Naples in September?

There are usually 15 days with some rain in Naples in September and the average monthly rainfall is 8.1 inches.

What is the chance of a hurricane in Naples in September?

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

Naples September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:07 18:46
Monday, 15th September 2025 06:13 18:31
Tuesday, 30th September 2025 06:19 18:14

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