Mykonos weather in September 2025

Expect 24°C daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Mykonos in September. Check more long-term weather averages for Mykonos in September before you book your next holiday to Mykonos in 2025/2026.

  • 24°C maximum daytime temperature in September in Mykonos (Mykonos Town)24
    24°C max day temperature
  • 11 hours of sunshine per day
  • 2 days with some rainfall in September in Mykonos (Mykonos Town)2
    2 days with some rainfall
  • 18°C minimum night-time temperature in September in Mykonos (Mykonos Town)18
    18°C min night temperature
  • 12 hours of daylight per day in September in Mykonos (Mykonos Town)12
    12 hours of daylight per day
  • Low heat & humidity in September in Mykonos (Mykonos Town)L
    Low heat & humidity
  • 14 mm monthly rainfall in September in Mykonos (Mykonos Town)14
    14 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Mykonos (Mykonos Town)7
    7 (High) UV index
  • 23°C sea temperature in September in Mykonos (Mykonos Town)23
    23°C sea temperature

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The September weather guide for Mykonos (Mykonos Town) 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 Mykonos destinations

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

All Mykonos destinations

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

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How hot is it in Mykonos in September?

Daytime temperatures usually reach 24°C in Mykonos Town, Mykonos in September, falling to 18°C at night.

How sunny is it in Mykonos in September?

There are normally 11 hours of bright sunshine each day in Mykonos Town, Mykonos in September - that's 85% of daylight hours.

How warm is the sea around Mykonos in September?

The average sea temperature around Mykonos Town, Mykonos in September is 23°C.

Does it ever rain in Mykonos in September?

There are usually 2 days with some rain in Mykonos Town, Mykonos in September and the average monthly rainfall is 14mm.

Mykonos September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:49 18:48
Monday, 15th September 2025 06:01 18:26
Tuesday, 30th September 2025 06:13 18:03

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