Avg weather in September
12 Hrs per day
19 mm per month
68 % avg
8 Mph avg


What’s the weather like in Kefalonia in September?

Kefalonia sits in the Ionian Sea off the southwestern coast of Greece which gives the island typical Mediterranean weather with long, hot summers and mild, wet winters. September’s the perfect time to visit as you’ll still get plenty of hot and sunny weather, although the amount of rain picks up as the month goes on.


The average high in Kefalonia is 27ºC in September, which drops to a pleasant 17ºC at night. You shouldn’t really need more than a warmer top for the evenings. At 25ºC, the sea’s lovely for swimming, while humidity’s moderate. There’s 47mm of rain over four days, and you can expect 12 hours of daylight with nine hours of sunshine each day. UV levels will be high so take some sun cream. Sunset’s after 8pm at the start of the month and gradually gets earlier.

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