Split weather in September 2025

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

25
25°C max day temperature
8
8 hours of sunshine per day
10
10 days with some rainfall
14
14°C min night temperature
12
12 hours of daylight per day
L
Low heat & humidity
75
75 mm of monthly rainfall
5
5 (Moderate) UV index
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.

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

More about Croatia

How hot is it in Split in September?

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

How sunny is it in Split in September?

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

How warm is the sea around Split in September?

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

Does it rain in Split in September?

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

Split September sunrise & sunset times

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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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Croatia - quick facts
Flight time^✝	2.5 hours
Time difference	UK +1 hour
Language(s)	Croatian, English
Currency	Euro
Electricity	C + F plug (230V)
Driving side	Right
Why visit?	Beaches Culture Nature Nightlife
Tourist info	Croatian National Tourist Board