Naples weather in September 2025

Expect 79°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 Campania in 2025/2026.

  • 79°F maximum daytime temperature in September in Naples79
    79°F max day temperature
  • 8 hours of sunshine per day
  • 9 days with some rainfall in September in Naples9
    9 days with some rainfall
  • 61°F minimum night-time temperature in September in Naples61
    61°F min night temperature
  • 12 hours of daylight per day in September in Naples12
    12 hours of daylight per day
  • Low heat & humidity in September in NaplesL
    Low heat & humidity
  • 2.9 inches monthly rainfall in September in Naples2.9
    2.9 inches of monthly rainfall
  • UV (maximum) index 6 (High) in September in Naples6
    6 (High) UV index
  • 75°F sea temperature in September in Naples75
    75°F sea temperature

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The September weather guide for Campania (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 the Campania

How hot is it in Naples in September?

Daytime temperatures usually reach 79°F in Naples in September with low heat and humidity, falling to 61°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 62% of daylight hours.

How warm is the sea around Naples in September?

The average sea temperature around Naples in September is 75°F.

Does it rain in Naples in September?

There are usually 9 days with some rain in Naples in September and the average monthly rainfall is 2.9 inches.

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 05:30 18:35
Monday, 15th September 2025 05:44 18:12
Tuesday, 30th September 2025 05:59 17:47

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