The largest Ionian island, Kefalonia has a mild climate, and we’ve got a detailed Kefalonia weather forecast to help you decide when to enjoy your Greek getaway. If you enjoy being more active, our two-week Kefalonia weather forecast gives you a daily guide of what to expect. For seeking out Byzantine monasteries or the phenomenon of Katavothres sea mills, June or September may be more comfortable. Walkers will appreciate the peace of Kefalonia outside peak season and cooler days. Taking in the views from Mount Ainos is a memorable moment. We’ve put together a long and short range Kefalonia weather forecast to help you with last-minute decisions about what to take or to pick the perfect time to visit this fascinating island.