Sea temperature in Ermoupoli in January
The sea around Ermoupoli averages 17°C in January, usually between 15°C and 18°C. That is cold for most swimmers; a wetsuit helps.
Average17°CCold
Usual range15°C–18°C80% of readings
vs December−1.8°cooler
vs February−0.3°cooler next month
Through the year
Monthly averages 2023–2025. Water at 22°C or warmer: June–October.
January in recent years
| 2023 | 16°C |
|---|---|
| 2024 | 17°C |
| 2025 | 17°C |
Nearby in January
Beaches in Ermoupoli
45 of 45 beaches have an Excellent EU water-quality grade. See which ones are calm today.