Kefalonia weather in July 2025

Expect 30°C daytime maximum temperatures in the shade with on average 13 hours of sunshine per day in Kefalonia in July. Check more long-term weather averages for Kefalonia in July before you book your next holiday to Kefalonia in 2025/2026.

  • 30°C maximum daytime temperature in July in Kefalonia (Argostoli)30
    30°C max day temperature
  • 13 hours of sunshine per day
  • 2 days with some rainfall in July in Kefalonia (Argostoli)2
    2 days with some rainfall
  • 19°C minimum night-time temperature in July in Kefalonia (Argostoli)19
    19°C min night temperature
  • 15 hours of daylight per day in July in Kefalonia (Argostoli)15
    15 hours of daylight per day
  • High heat & humidity in July in Kefalonia (Argostoli)H
    High heat & humidity
  • 9 mm monthly rainfall in July in Kefalonia (Argostoli)9
    9 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in July in Kefalonia (Argostoli)9
    9 (Very High) UV index
  • 24°C sea temperature in July in Kefalonia (Argostoli)24
    24°C sea temperature

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The July weather guide for Kefalonia (Argostoli) 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 Kefalonia destinations

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

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

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How hot is it in Kefalonia in July?

Daytime temperatures usually reach 30°C in Argostoli, Kefalonia in July with high heat and humidity, falling to 19°C at night.

How sunny is it in Kefalonia in July?

There are normally 13 hours of bright sunshine each day in Argostoli, Kefalonia in July - that's 88% of daylight hours.

How warm is the sea around Kefalonia in July?

The average sea temperature around Argostoli, Kefalonia in July is 24°C.

Does it ever rain in Kefalonia in July?

There are usually 2 days with some rain in Argostoli, Kefalonia in July and the average monthly rainfall is 9mm.

Kefalonia July sunrise & sunset times

Browse the sunrise and sunset times for Kefalonia in July 2025. Select a month to view Kefalonia sunrise and sunset times for the next 12 months. The Kefalonia sunrise and sunset times shown below are for Argostoli.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 05:19 20:05
Wednesday, 16th July 2025 05:28 20:00
Thursday, 31st July 2025 05:40 19:49

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