When planning a visit to Kefalonia in Greece, it helps to know that temperatures typically range from 14°C (57°F) in February up to 27°C (81°F) during the peak of August. Our detailed climate overview is based on data from Lassi, the region's most well-known city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
The weather in Kefalonia during May, June, July, September, October and November is comfortably warm, with average temperatures ranging from 19°C (66°F) to 26°C (79°F).
When it comes to rainfall, Kefalonia sees significant variations throughout the year. December tends to be the wettest, receiving 159 mm (6.3 in) of rain, while July is much drier with just 5 mm (0.2 in). The driest conditions can be found during May, June, July and August, with rainfall staying below 19 mm (0.7 in).
