Sea temperature in Kos in March
The sea around Kos averages 17°C in March, usually between 17°C and 18°C. That is cold for most swimmers; a wetsuit helps.
Average17°CCold
Usual range17°C–18°C80% of readings
vs February−0.4°cooler
vs April+0.5°warmer next month
Through the year
Monthly averages 2023–2025. Water at 22°C or warmer: June–November.
March in recent years
| 2023 | 17°C |
|---|---|
| 2024 | 18°C |
| 2025 | 17°C |
Nearby in March
Beaches in Kos
15 of 16 beaches have an Excellent EU water-quality grade. See which ones are calm today.