Kattegat, Köpenhamn · Sea/Coast
The current water temperature at Kattegat is 12.6 °C (as of October 16, 2026, source: official monitoring networks).
Official sample from August 17, 2026: 17.0 °C · current reading from Halmstad (2985 m away).
The sea lags the air by weeks: the warmest water often arrives after the warmest days. Measured buoy values show this honestly.
Can you swim at Kattegat right now?
The current water temperature is 12.6 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Kattegat?
Currently 12.6 °C (updated continuously).
How is the water quality at Kattegat?
The official classification is: excellent.