Sea temperature in Evia in December
The sea around Evia averages 17°C in December, usually between 16°C and 19°C. That is cold for most swimmers; a wetsuit helps.
Average17°CCold
Usual range16°C–19°C80% of readings
vs November−0.5°cooler
vs January−3.8°cooler next month
Through the year
Monthly averages 2023–2025. Water at 22°C or warmer: July–September.
December in recent years
| 2023 | 18°C |
|---|---|
| 2024 | 17°C |
| 2025 | 18°C |
Nearby in December
Beaches in Evia
60 of 62 beaches have an Excellent EU water-quality grade. See which ones are calm today.