Climate guide for Kefalonia, Greece

Best Time to Visit
Kefalonia

How to read the score (0–10)
05810
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About Kefalonia

Kefalonia is the largest of the Ionian Islands, renowned for its dramatic mountain ranges, crystal-clear subterranean cave lakes, pine-clad hills, and iconic steep pebble beaches.

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Travel Tips

Melissani Lake Midday Light
Visit Melissani cave lake between 11:30 AM and 1:30 PM when vertical sun rays illuminate the blue subterranean water.
Myrtos Beach Viewpoint
Stop at the coastal highway overlook above Myrtos beach for iconic high-angle panoramic photos before driving down.
Fiskardo Fishing Village
Drive north to Fiskardo, the only village on Kefalonia that survived the 1953 earthquake intact with original Venetian architecture.

Things to do in Kefalonia

Kefalonia, Greece. Live activities and tours from GetYourGuide, matched to this destination.

Frequently asked

When is the best time to visit Kefalonia, Greece?
The best months to visit Kefalonia are May, June, July, August, September. May is the single peak month with a climate score of 9.2/10 based on temperature, rainfall, humidity, daylight and historical sunny days.
What is the weather like in Kefalonia year-round?
Kefalonia has a beach and coastal climate profile. Average monthly temperatures range from 15°C in January to 32°C in July, with climate scores between 4.5 and 9.2 out of 10.
Which months should I avoid in Kefalonia?
The lowest-scoring months in Kefalonia are January (4.5/10), February (4.5/10), December (4.5/10). These months typically combine less comfortable temperatures, higher rainfall or fewer sunny days.
When is the rainy season in Kefalonia?
January is the wettest month in Kefalonia, averaging about 110 mm of rainfall. May is the driest, at roughly 15 mm.
Which is the sunniest month in Kefalonia?
May sees the most sun in Kefalonia, with about 23 sunny days on average - ideal for outdoor plans.
Is Kefalonia good for beach and coastal travel?
Kefalonia is profiled as a beach and coastal destination in Europe, Greece. Its highest-scoring window (May, June, July, August, September) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Kefalonia calculated?
Each month is rated 0-10 using ERA5 climate normals for Kefalonia: temperature comfort, precipitation, humidity, daylight hours, and historical sunny days - weighted for a beach and coastal trip.

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