Sea temperature and swimming season in Denmark
When the sea is warm enough to swim in 15 coastal cities in Denmark.
| City | Warmest | Coldest | Swimming season |
|---|---|---|---|
| Copenhagen | 18.3°C Aug | 3.1°C Feb | never comfortable |
| Århus | 17.9°C Aug | 3.2°C Feb | never comfortable |
| Esbjerg | 18.7°C Aug | 3.5°C Feb | never comfortable |
| Horsens | 17.9°C Aug | 3.3°C Feb | never comfortable |
| Vejle | 17.9°C Aug | 3.3°C Feb | never comfortable |
| Roskilde | 18.5°C Aug | 3.0°C Feb | never comfortable |
| Fredericia | 17.9°C Aug | 3.3°C Feb | never comfortable |
| Køge | 18.5°C Aug | 3.1°C Feb | never comfortable |
| Sønderborg | 18.9°C Aug | 3.1°C Feb | never comfortable |
| Frederikshavn | 17.9°C Aug | 3.6°C Feb | never comfortable |
| Nykøbing Falster | 18.8°C Aug | 3.1°C Feb | never comfortable |
| Korsør | 18.6°C Aug | 3.1°C Feb | never comfortable |
| Rønne | 18.7°C Aug | 3.8°C Feb | never comfortable |
| Struer | 17.9°C Aug | 4.3°C Feb | never comfortable |
| Faaborg | 18.8°C Aug | 3.1°C Feb | never comfortable |
Knowing the temperature is only half of it. What to wear, and why cold shock is the real risk →
Season uses 19°C. Why that number, and where the data comes from