Sea temperature in Santorini in October
The sea around Santorini averages 23°C in October, usually between 22°C and 24°C. That is pleasant for swimming, refreshing at first.
Average23°CRefreshing
Usual range22°C–24°C80% of readings
vs September−1.9°cooler
vs November−1.9°cooler next month
Through the year
Monthly averages 2023–2025. Water at 22°C or warmer: June–October.
October in recent years
| 2023 | 23°C |
|---|---|
| 2024 | 23°C |
| 2025 | 22°C |
Nearby in October
Beaches in Santorini
7 of 7 beaches have an Excellent EU water-quality grade. See which ones are calm today.