Großer Ratzeburger See water temperature

Großer Ratzeburger See, Ratzeburger See, Schlosswiese · Lake

The current water temperature at Großer Ratzeburger See is 19.0 °C (as of August 24, 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.

19.0 °C

Measured: August 24, 2026 · continuously updated

💧 Water 19.0° · ☀️ Air 18.5°

Temperature trend of recent weeks

Großer Ratzeburger See — Photo: Niteshift (talk) · CC BY-SA 3.0 · Wikimedia Commons

Water quality

EU classification: excellent · Visibility depth: 2.5 m

Nearby waters

Großer Ratzeburger See, Ratzeburger See, Römnitz · 0.6 km away19.0 °C Großer Küchensee, Küchensee Ratzeburg · 0.8 km away19.0 °C Großer Ratzeburger See, Ratzeburger See, Bäk · 1.3 km away19.0 °C Großer Ratzeburger See, Ratzeburger See, Kalkhütte · 3.2 km away19.0 °C Großer Ratzeburger See, Ratzeburger See, Buchholz · 3.8 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; Groß Sarau18.0 °C

Frequently asked questions

Can you swim at Großer Ratzeburger See right now?
The current water temperature is 19.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Großer Ratzeburger See?
Currently 19.0 °C (updated continuously).

How is the water quality at Großer Ratzeburger See?
The official classification is: excellent.

← All waters · Warmest lakes to swim today · Water temperature in Germany