Kattegat, Tångudden · Sea/Coast
The current water temperature at Kattegat is 18.1 °C (as of September 1, 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.
This measurement series includes 719 data points since July 3, 2026.
Lowest recorded value: 15.0 °C on July 7, 2026 · highest value: 21.4 °C on July 18, 2026.
In September, temperatures have ranged between 18.1 °C and 18.2 °C.
Can you swim at Kattegat right now?
The current water temperature is 18.1 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Kattegat?
Currently 18.1 °C (updated continuously).
How warm is at Kattegat in September?
In September, the water temperature recently averaged 18.1 °C.
When is the water warmest at Kattegat?
Across the measurement record, July is on average the warmest month (18.3 °C).