Weather in Santorini Island for September 2025
Until now, September 2025 in Santorini Island is slightly cooler than the historical average by -0.8 °C.
Expect cooler weather in the next days in Santorini Island with the forecast suggesting a temperature of 23.6 °C, lower than the historical average.
In general, the average temperature in Santorini Island at the beginning of September is 25.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 23.9 °C by the end of September.
With an average of 2 rainy days, Santorini Island experiences minimal rainfall in September.
Is September a good time to visit Santorini Island? check out the best time to travel to Santorini Island page.
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Santorini Island Weather September
Temperatures trend during September in Santorini Island
September weather in Santorini Island day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 26° /24° | 0 mm | 7 | |
| 2 Sept. | Sunny | 26° /24° | 0 mm | 7 | |
| 3 Sept. | Sunny | 26° /24° | 0 mm | 7 | |
| 4 Sept. | Sunny | 26° /24° | 0 mm | 7 | |
| 5 Sept. | Sunny | 25° /24° | 1.8 mm | 7 | |
| 6 Sept. | Sunny | 25° /23° | 1.4 mm | 7 | |
| 7 Sept. | Sunny | 25° /23° | 0 mm | 6 | |
| 8 Sept. | Sunny | 25° /23° | 0 mm | 6 | |
| 9 Sept. | Sunny | 25° /23° | 0 mm | 6 | |
| 10 Sept. | Sunny | 25° /23° | 0 mm | 7 | |
| 11 Sept. | Sunny | 25° /23° | 0.5 mm | 6 | |
| 12 Sept. | Sunny | 25° /23° | 0 mm | 6 | |
| 13 Sept. | Sunny | 25° /23° | 0 mm | 6 | |
| 14 Sept. | Sunny | 24° /23° | 0 mm | 6 | |
| 15 Sept. | Sunny | 24° /23° | 0 mm | 1.6 | |
| 16 Sept. | Sunny | 24° /24° | 0 mm | 1.7 | |
| 17 Sept. | Sunny | 25° /24° | 0 mm | 1.8 | |
| 18 Sept. | Sunny | 23° /22° | 0 mm | 1.8 | |
| 19 Sept. | Sunny | 23° /22° | 0 mm | 2.1 | |
| 20 Sept. | Sunny | 24° /22° | 0 mm | 6 | |
| 21 Sept. | Sunny | 23° /23° | 0 mm | 6 | |
| 22 Sept. | Sunny | 23° /22° | 0 mm | 6 | |
| 23 Sept. | Sunny | 23° /22° | 0 mm | 6 | |
| 24 Sept. | Sunny | 24° /23° | 0 mm | 6 | |
| 25 Sept. | Sunny | 24° /23° | 0 mm | 6 | |
| 26 Sept. | Sunny | 24° /23° | 0 mm | 6 | |
| 27 Sept. | Sunny | 24° /23° | 0 mm | 6 | |
| 28 Sept. | Sunny | 23° /22° | 0 mm | 6 | |
| 29 Sept. | Sunny | 24° /22° | 0.2 mm | 6 | |
| 30 Sept. | Sunny | 24° /21° | 0 mm | 6 | |
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Santorini Island weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Sunny | Sunny | Sunny |
| Temperatures | 26°/24° | 24°/23° | 21°/20° |
| Rainfall | 2 mm | 5 mm | 2 mm |
| Wind | 29.2 km/h | 30.7 km/h | 31.1 km/h |
| Humidity | 75% | 70% | 68% |
| Rainy days | 1 days | 2 days | 1 days |
| Dry days | 30 days | 28 days | 30 days |
Planning a trip to Santorini Island? Discover the best time to visit
Santorini Island in September - FAQ
What to pack to Santorini Island in September?
As you prepare for your trip to Santorini Island in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Santorini Island, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
September rainfall patterns in Santorini Island
UV exposure in Santorini Island during September
Quick links
Where is Santorini Island?Get accurate weather forecasts for Santorini Island, located at latitude 36.406 and longitude 25.457. Stay updated with localized weather information tailored for Santorini Island.