Istron Bay weather in September 2025

Expect 26°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Istron Bay in September. Check more long-term weather averages for Istron Bay in September before you book your next holiday to Crete in 2025/2026.

  • 26°C maximum daytime temperature in September in Istron Bay26
    26°C max day temperature
  • 10 hours of sunshine per day
  • 1 day with some rainfall in September in Istron Bay1
    1 day with some rainfall
  • 19°C minimum night-time temperature in September in Istron Bay19
    19°C min night temperature
  • 12 hours of daylight per day in September in Istron Bay12
    12 hours of daylight per day
  • Low heat & humidity in September in Istron BayL
    Low heat & humidity
  • 18 mm monthly rainfall in September in Istron Bay18
    18 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Istron Bay8
    8 (Very High) UV index
  • 25°C sea temperature in September in Istron Bay25
    25°C sea temperature

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Istron Bay by month

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The September weather guide for Crete (Istron Bay) 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)

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More about Crete

How hot is it in Istron Bay in September?

Daytime temperatures usually reach 26°C in Istron Bay in September with low heat and humidity, falling to 19°C at night.

How sunny is it in Istron Bay in September?

There are normally 10 hours of bright sunshine each day in Istron Bay in September - that's 78% of daylight hours.

How warm is the sea around Istron Bay in September?

The average sea temperature around Istron Bay in September is 25°C.

Does it ever rain in Istron Bay in September?

There is usually 1 day with some rain in Istron Bay in September and the average monthly rainfall is 18mm.

Istron Bay September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:50 18:44
Monday, 15th September 2025 06:00 18:24
Tuesday, 30th September 2025 06:11 18:02

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