Santorini weather in September
Averages for 1 place in Santorini in September, from 30 years of weather data.
Holiday weather in September
Excellent
Best time to visit: July – September
Places in Santorini in September
Sorted by holiday weather score. Each place links to its own page for September.
| Place | Score | Day | Night | Sea | Sun | Rain days |
|---|---|---|---|---|---|---|
| Fira | 92 | 24° | 21° | 24° | 9 h | 1 |
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 100 | 92 | 61 |
| Day | 26° | 24° | 20° |
| Night | 23° | 21° | 18° |
| Sea | 25° | 24° | 22° |
| Sun | 11 h | 9 h | 7 h |
| Rain days | 0 | 1 | 3 |
Santorini in September: quick answers
Is it warm in Santorini in September?
Yes, it is warm. Daytime highs average 24 °C (24 °C by place) and nights 21 °C.
Can you swim in Santorini in September?
Yes. The sea is 24 °C, 24 °C on average.
Does it rain much in Santorini in September?
Hardly: 1 rainy day on average. Plus 9 hours of sunshine a day.
Is September a good time to visit Santorini?
Yes, September is one of the best months, with a holiday weather score of 92 out of 100. Best time overall: July – September.
Santorini month by month
Santorini: weather by monthWhere to go in SeptemberSea temperature in September
More islands & regions
All places on the Greek islandsGreece: all destinationsAll islands & regions
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)