Supetar weather in September 2026

Q: How hot is it in Supetar in September?

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

Q: How sunny is it in Supetar in September?

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

Q: How warm is the sea around Supetar in September?

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

Q: Does it rain in Supetar in September?

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

Expect daytime maximum temperatures of 25°C in Supetar, Croatia in September based on long-term weather averages. There are 8 hours of sunshine per day on average with 10 days with some rainfall and typically 68 mm of rainfall in the month.

25
25°C max day temperature
8
8 hours of sunshine per day
10
10 days with some rainfall
16
16°C min night temperature
12
12 hours of daylight per day
L
Low heat & humidity
68
68 mm of monthly rainfall
5
5 (Moderate) UV index
22
22°C sea temperature

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The September weather guide for Croatia (Supetar) 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)