Santorini weather in May
Averages for 1 place in Santorini in May, from 30 years of weather data.
Holiday weather in May
Fair
Best time to visit: July – September
Places in Santorini in May
Sorted by holiday weather score. Each place links to its own page for May.
| Place | Score | Day | Night | Sea | Sun | Rain days |
|---|---|---|---|---|---|---|
| Fira | 50 | 20° | 16° | 19° | 9 h | 2 |
May compared
How the weather changes from April to June. Tap a month to open it.
Santorini in May: quick answers
Is it warm in Santorini in May?
It is mild. Daytime highs average 20 °C (20 °C by place) and nights 16 °C.
Can you swim in Santorini in May?
Only if you like it fresh: the sea is 19 °C, 19 °C on average.
Does it rain much in Santorini in May?
Rarely: 2 rainy days on average. Plus 9 hours of sunshine a day.
Is May a good time to visit Santorini?
May scores 50 out of 100 (Fair). The best time to visit is July – September.
Santorini month by month
Santorini: weather by monthWhere to go in MaySea temperature in May
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Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)