Kefalonia, Greece

Kefalonia, Greece

May beach and weather guide

Based on 5 years of historical ERA5 climate data

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May beach conditions — historical average

Mixed
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📉 Our data shows more unsettled conditions in 2024-2025 compared to 2021-2022 for this destination and time of year
21.8°C Temp
19.5°C Sea temp
4.8 Rain days
11.6h Sunshine hrs
68.4% Humidity

Year by year — mid May

2025 Mixed 22.2°C · 7 rainy days · 12.5h sun
2024 Mixed 24.5°C · 6 rainy days · 10.7h sun
2023 Mixed 19.4°C · 9 rainy days · 9.3h sun
2022 Mixed 22.5°C · 1 rainy day · 12.7h sun
2021 Mixed 20.6°C · 1 rainy day · 12.8h sun

Other months in Kefalonia

May June July August September October

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Trip type

Each trip type is scored on what matters most for it — snow days for skiing, sea temp for beach, sunshine for sightseeing.

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About Kefalonia in May

Based on 5 years of ERA5 historical climate data, May in Kefalonia has historically been mixed for a beach holiday. Average temperatures of 21.8°C with sea temperatures around 19.5°C and 4.8 rainy days on average.

0 of the last 5 years had good beach conditions during this period. This data uses ERA5 reanalysis records — real historical measurements, not generalised averages.

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