Kalymnos weather in September 2025

Expect 28°C daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Kalymnos in September. Check more long-term weather averages for Kalymnos in September before you book your next holiday to Greece in 2025/2026.

  • 28°C maximum daytime temperature in September in Kalymnos28
    28°C max day temperature
  • 11 hours of sunshine per day
  • 4 days with some rainfall in September in Kalymnos4
    4 days with some rainfall
  • 19°C minimum night-time temperature in September in Kalymnos19
    19°C min night temperature
  • 12 hours of daylight per day in September in Kalymnos12
    12 hours of daylight per day
  • Moderate heat & humidity in September in KalymnosM
    Moderate heat & humidity
  • 16 mm monthly rainfall in September in Kalymnos16
    16 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Kalymnos7
    7 (High) UV index
  • 24°C sea temperature in September in Kalymnos24
    24°C sea temperature

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Kalymnos by month

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The September weather guide for Greece (Kalymnos) 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 Greece

How hot is it in Kalymnos in September?

Daytime temperatures usually reach 28°C in Kalymnos in September with moderate heat and humidity, falling to 19°C at night.

How sunny is it in Kalymnos in September?

There are normally 11 hours of bright sunshine each day in Kalymnos in September - that's 89% of daylight hours.

How warm is the sea around Kalymnos in September?

The average sea temperature around Kalymnos in September is 24°C.

Does it rain in Kalymnos in September?

There are usually 4 days with some rain in Kalymnos in September and the average monthly rainfall is 16mm.

Kalymnos September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:43 18:41
Monday, 15th September 2025 05:54 18:20
Tuesday, 30th September 2025 06:07 17:57

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