In September warmest sea in Poland is usually observed in the following locations: Gdynia, Sopot, Gdansk.
Table below shows the average sea water temperature for marine resorts of Poland in September for the last three years.
| Place name | September 2026 | September 2025 | September 2024 |
|---|---|---|---|
| Gdynia | 63.4°F | 64.3°F | 65.8°F |
| Sopot | 63.3°F | 63.9°F | 65.2°F |
| Gdansk | 63.3°F | 63.7°F | 65.0°F |
| Krynica Morska | 63.2°F | 64.7°F | 66.2°F |
| Szczecin | 62.9°F | 64.4°F | 66.1°F |
| Leba | 62.9°F | 64.2°F | 62.9°F |
| Vladyslawowo | 62.7°F | 64.0°F | 65.1°F |
| Miedzyzdroje | 62.6°F | 64.3°F | 65.4°F |
| Ustka | 62.3°F | 63.8°F | 62.9°F |
| Wisla | 32.0°F | 32.0°F | 32.0°F |
Charts below show average sea water temperature for Poland resorts with the warmest sea in September.
You can also check other months of the year to see sea temperature of Poland resorts at that time.
Places in Poland:
Name
°F
