Click on a day for an hourly weather forecast
The weather in Santorini in September is very hot. The average temperatures are between 24°C and 24°C, drinking water regularly is advisable.
You can expect a few rainy days in Santorini during September, but usually the weather is comfortable in September.
Our weather forecast can give you a great sense of what weather to expect in Santorini in September 2025.
If you’re planning to visit Santorini in the near future, we highly recommend that you review the 14 day weather forecast for Santorini before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 15° / 13° | 4 | 27 | 0 | 87 mm | Good | Santorini in January |
| February | 15° / 13° | 3 | 25 | 0 | 81 mm | Good | Santorini in February |
| March | 15° / 14° | 3 | 28 | 0 | 54 mm | Good | Santorini in March |
| April | 17° / 16° | 1 | 29 | 0 | 20 mm | Good | Santorini in April |
| May | 20° / 19° | 1 | 30 | 0 | 29 mm | Good | Santorini in May |
| June | 23° / 22° | 1 | 29 | 0 | 15 mm | Perfect | Santorini in June |
| July | 25° / 24° | 0 | 31 | 0 | 3 mm | Perfect | Santorini in July |
| August | 26° / 25° | 0 | 31 | 0 | 4 mm | Perfect | Santorini in August |
| September | 24° / 24° | 1 | 29 | 0 | 19 mm | Perfect | Santorini in September |
| October | 22° / 21° | 2 | 29 | 0 | 51 mm | Good | Santorini in October |
| November | 19° / 18° | 3 | 27 | 0 | 52 mm | Good | Santorini in November |
| December | 16° / 15° | 4 | 27 | 0 | 75 mm | Good | Santorini in December |