In September warmest sea in Sweden is usually observed in the following locations: Uppsala, Karlstad, Orebro.
Table below shows the average sea water temperature for marine resorts of Sweden in September for the last three years.
| Place name | September 2026 | September 2025 | September 2024 |
|---|---|---|---|
| Uppsala | 62.9°F | 61.4°F | 62.0°F |
| Karlstad | 62.4°F | 60.9°F | 61.5°F |
| Orebro | 62.4°F | 61.0°F | 61.3°F |
| Vasteras | 62.3°F | 61.6°F | 61.8°F |
| Stockholm | 62.3°F | 60.8°F | 60.4°F |
| Gothenburg | 62.1°F | 62.0°F | 61.9°F |
| Helsinborg | 61.6°F | 62.6°F | 63.1°F |
| Lund | 60.6°F | 62.8°F | 63.2°F |
| Malmo | 60.6°F | 62.7°F | 63.1°F |
| Jonkoping | 59.9°F | 59.7°F | 59.7°F |
| Sundsvall | 58.8°F | 57.5°F | 57.4°F |
| Kristianstad | 57.6°F | 61.3°F | 61.8°F |
Charts below show average sea water temperature for Sweden resorts with the warmest sea in September.
You can also check other months of the year to see sea temperature of Sweden resorts at that time.
Places in Sweden:
Name
°F
