Großer Ratzeburger See water temperature

Großer Ratzeburger See, Ratzeburger See; Groß Sarau · Lake

The current water temperature at Großer Ratzeburger See is 18.0 °C (as of August 25, 2026, source: Badegewässer Schleswig-Holstein (Open Data SH)).

Lakes stratify in summer: bathing-warm on top, markedly colder a few metres down. Measurements are taken at the surface — right where you swim.

18.0 °C

Measured: August 25, 2026 · continuously updated

💧 Water 18.0° · ☀️ Air 18.5°

Temperature trend of recent weeks

Großer Ratzeburger See — Photo: Martin Kraft · CC BY-SA 4.0 · Wikimedia Commons

Water quality

Visibility depth: 2.0 m

Nearby waters

Großer Ratzeburger See, Ratzeburger See, Pogeez · 2.2 km away19.0 °C Großer Ratzeburger See, Ratzeburger See, Buchholz · 4.2 km away19.0 °C Großer Ratzeburger See, Ratzeburger See, Kalkhütte · 4.8 km away19.0 °C Großer Ratzeburger See, Ratzeburger See, Bäk · 7.3 km away19.0 °C Großer Ratzeburger See, Ratzeburger See, Römnitz · 7.4 km away19.0 °C

More measuring points: Großer Ratzeburger See

Ratzeburger See, Bäk19.0 °C Ratzeburger See, Buchholz19.0 °C Ratzeburger See, Kalkhütte19.0 °C Ratzeburger See, Pogeez19.0 °C Ratzeburger See, Römnitz19.0 °C Ratzeburger See, Schlosswiese19.0 °C

Frequently asked questions

Can you swim at Großer Ratzeburger See 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 Großer Ratzeburger See?
Currently 18.0 °C (updated continuously).

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