Sea temperature in Poros in January
The sea around Poros averages 17°C in January, usually between 16°C and 17°C. That is cold for most swimmers; a wetsuit helps.
Average17°CCold
Usual range16°C–17°C80% of readings
vs December−2.1°cooler
vs February−0.9°cooler next month
Through the year
Monthly averages 2023–2025. Water at 22°C or warmer: June–October.
January in recent years
| 2023 | 17°C |
|---|---|
| 2024 | 17°C |
| 2025 | 16°C |
Nearby in January
Beaches in Poros
4 of 4 beaches have an Excellent EU water-quality grade. See which ones are calm today.