Kattegat water temperature

Kattegat, Vallda Sandö - Stensvik · Sea/Coast

The current water temperature at Kattegat is 18.0 °C (as of August 10, 2026, source: official monitoring networks).

The sea lags the air by weeks: the warmest water often arrives after the warmest days. Measured buoy values show this honestly.

18.0 °C

Measured: August 10, 2026 · continuously updated

💧 Water 18.0° · ☀️ Air 16.5° · high today 18.7°

Temperature trend of recent weeks

Kattegat — Photo: DimiTalen · CC0 · Wikimedia Commons

Water quality

EU classification: excellent

Nearby waters

Kattegat, Lerkil · 3.5 km away18.0 °C Kattegat, Smarholmen · 6.5 km away18.0 °C Kattegat, Onsala · 10.7 km away17.6 °C Kattegat, Gottskär - Utholmen · 12.6 km away18.0 °C Kattegat, Tjolöholm · 14.7 km away16.0 °C

More measuring points: Kattegat

Arild, Kallbadhuset20.0 °C Farhultsbaden20.0 °C Hönö, Hästen20.0 °C Hönö, Lapposand20.0 °C Laholmsbukten, Birger Pers väg20.0 °C Laholmsbukten, Fiskaregatan20.0 °C

Frequently asked questions

Can you swim at Kattegat right now?
The current water temperature is 18.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Kattegat?
Currently 18.0 °C (updated continuously).

How is the water quality at Kattegat?
The official classification is: excellent.

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