Kefalonia, Greece
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Kefalonia

September beach and weather guide

Based on 5 years of historical ERA5 climate data

Photo by Zoe Stefanatou on Unsplash

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September beach conditions — historical average

Excellent
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26.0°C Temp
26.1°C Sea temp
3.8 Rain days
10.9h Sunshine hrs
68.4% Humidity
80%

Reliable conditions

4 of 5 years were good

Year by year — mid September

2024 Good 23.4°C · 10 rainy days · 10.4h sun
2023 Excellent 29.0°C · 0 rainy days · 11.5h sun
2022 Excellent 25.2°C · 2 rainy days · 11.6h sun
2021 Good 25.2°C · 4 rainy days · 11.0h sun
2020 Excellent 27.1°C · 3 rainy days · 10.0h sun

Other months in Kefalonia

May June July August September October

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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 September

Based on 5 years of ERA5 historical climate data, September in Kefalonia has historically been excellent for a beach holiday. Average temperatures of 26.0°C with sea temperatures around 26.1°C and 3.8 rainy days on average.

4 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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