Postira weather in September 2026

Q: How hot is it in Postira in September?

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

Q: How sunny is it in Postira in September?

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

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

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

Q: Does it rain in Postira in September?

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

Expect daytime maximum temperatures of 25°C in Postira, 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

Postira by month

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

Recommended for Croatia

First Choice sale: up to £500 off holidays in 2026/2027

Sale

Save up to £500 on holidays (1 May 2026-31 Oct 2027)
10% discount up to £500. Min spend £500. T&Cs apply
Travel between 1st May 2026 & 31st Oct 2027 (inclusive)

Go to First Choice deal >>

Expires at 23:59 on Saturday 28th Feb 2026 · View all First Choice offers

The September weather guide for Croatia (Postira) 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)