Sea temperature in Santorini in March
The sea around Santorini averages 17°C in March, usually between 16°C and 18°C. That is cold for most swimmers; a wetsuit helps.
Average17°CCold
Usual range16°C–18°C80% of readings
vs February−0.1°cooler
vs April+0.6°warmer next month
Through the year
Monthly averages 2023–2025. Water at 22°C or warmer: June–October.
March in recent years
| 2023 | 16°C |
|---|---|
| 2024 | 18°C |
| 2025 | 17°C |
Nearby in March
Beaches in Santorini
7 of 7 beaches have an Excellent EU water-quality grade. See which ones are calm today.