Croatia weather in September 2025

Expect 25°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Croatia in September. Check more long-term weather averages for Croatia in September before you book your next holiday to Croatia in 2025/2026.

  • 25°C maximum daytime temperature in September in Croatia (Split)25
    25°C max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in September in Croatia (Split)10
    10 days with some rainfall
  • 14°C minimum night-time temperature in September in Croatia (Split)14
    14°C min night temperature
  • 12 hours of daylight per day in September in Croatia (Split)12
    12 hours of daylight per day
  • Low heat & humidity in September in Croatia (Split)L
    Low heat & humidity
  • 75 mm monthly rainfall in September in Croatia (Split)75
    75 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Croatia (Split)5
    5 (Moderate) UV index
  • 22°C sea temperature in September in Croatia (Split)22
    22°C sea temperature

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The September weather guide for Croatia (Split) 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.

Top Croatia destinations

Below are average maximum temperatures at popular countries, regions and places in Croatia in September. Select a holiday destination to see more weather parameters.

All Croatia destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Croatia

How hot is it in Croatia in September?

Daytime temperatures usually reach 25°C in Split, Croatia in September with low heat and humidity, falling to 14°C at night.

How sunny is it in Croatia in September?

There are normally 8 hours of bright sunshine each day in Split, Croatia in September - that's 62% of daylight hours.

How warm is the sea around Croatia in September?

The average sea temperature around Split, Croatia in September is 22°C.

Does it rain in Croatia in September?

There are usually 10 days with some rain in Split, Croatia in September and the average monthly rainfall is 75mm.

Croatia September sunrise & sunset times

Browse the sunrise and sunset times for Croatia in September 2025. Select a month to view Croatia sunrise and sunset times for the next 12 months. The Croatia sunrise and sunset times shown below are for Split.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:18 18:29
Monday, 15th September 2025 05:34 18:04
Tuesday, 30th September 2025 05:51 17:37

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