Sea temperature in Kalymnos in December
The sea around Kalymnos averages 21°C in December, usually between 19°C and 21°C. That is cool: fine for a quick swim, many people find it chilly.
Average21°CCool
Usual range19°C–21°C80% of readings
vs November−1.7°cooler
vs January−1.4°cooler next month
Through the year
Monthly averages 2023–2025. Water at 22°C or warmer: June–November.
December in recent years
| 2023 | 21°C |
|---|---|
| 2024 | 20°C |
| 2025 | 21°C |
Nearby in December
Beaches in Kalymnos
5 of 7 beaches have an Excellent EU water-quality grade. See which ones are calm today.