canIswim

Sea temperature and swimming season in Germany

When the sea is warm enough to swim in 15 coastal cities in Germany.

CityWarmestColdestSwimming season
Bremerhaven 19.7°C Aug 4.2°C Feb Aug – Aug (1 months)
Wilhelmshaven 19.6°C Aug 4.3°C Feb Aug – Aug (1 months)
Universitäts- und Hansestadt Greifswald 20.0°C Aug 2.6°C Feb Aug – Aug (1 months)
Cuxhaven 19.6°C Aug 3.9°C Feb Aug – Aug (1 months)
Emden 19.9°C Aug 4.1°C Feb Aug – Aug (1 months)
Ribnitz-Damgarten 18.6°C Aug 3.2°C Feb never comfortable
Brunsbüttel 19.6°C Aug 3.7°C Feb Aug – Aug (1 months)
Bergen auf Rügen 19.8°C Aug 2.8°C Feb Aug – Aug (1 months)
Fehmarn 19.0°C Aug 3.3°C Feb Aug – Aug (1 months)
Wolgast 20.0°C Aug 2.6°C Feb Aug – Aug (1 months)
Oldenburg in Holstein 19.0°C Aug 3.3°C Feb Aug – Aug (1 months)
Kappeln 19.0°C Aug 3.2°C Feb never comfortable
Niebüll 19.1°C Aug 3.2°C Feb Aug – Aug (1 months)
Borkum 19.3°C Aug 4.9°C Feb Aug – Aug (1 months)
Tönning 19.3°C Aug 3.6°C Feb Aug – Aug (1 months)

Season uses 19°C. Why that number, and where the data comes from