Argostoli weather in June 2026

Q: How hot is it in Argostoli in June?

Daytime temperatures usually reach 27°C in Argostoli in June with moderate heat and humidity, falling to 17°C at night.

Q: How sunny is it in Argostoli in June?

There are normally 11 hours of bright sunshine each day in Argostoli in June - that's 77% of daylight hours.

Q: How warm is the sea around Argostoli in June?

The average sea temperature around Argostoli in June is 22°C.

Q: Does it ever rain in Argostoli in June?

There are usually 3 days with some rain in Argostoli in June and the average monthly rainfall is 13mm.

Expect daytime maximum temperatures of 27°C in Argostoli, Kefalonia in June based on long-term weather averages. There are 11 hours of sunshine per day on average.

27
27°C max day temperature
11
11 hours of sunshine per day
3
3 days with some rainfall
17
17°C min night temperature
15
15 hours of daylight per day
M
Moderate heat & humidity
13
13 mm of monthly rainfall
9
9 (Very High) UV index
22
22°C sea temperature

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The June 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.

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