Santorini, Greece
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Santorini

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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22.8°C Temp
19.4°C Sea temp
1.0 Rain days
12.4h Sunshine hrs
66.4% Humidity
100%

Reliable conditions

5 of 5 years were good

Year by year — mid May

2025 Good 23.6°C · 0 rainy days · 12.7h sun
2024 Mixed 23.6°C · 1 rainy day · 11.1h sun
2023 Mixed 21.7°C · 3 rainy days · 12.2h sun
2022 Mixed 22.3°C · 1 rainy day · 13.0h sun
2021 Mixed 22.6°C · 0 rainy days · 13.1h sun

Other months in Santorini

April May June July August September October

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About Santorini in May

Based on 5 years of ERA5 historical climate data, May in Santorini has historically been mixed for a beach holiday. Average temperatures of 22.8°C with sea temperatures around 19.4°C and 1.0 rainy days on average.

5 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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