Längsee, St. Georgen water temperature

Längsee, St. Georgen, St. Georgen, Sankt Georgen am Längsee · Lake

The current water temperature at Längsee is 24.8 °C (as of August 31, 2026, source: AGES).

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

24.8 °C

Measured: August 31, 2026 · continuously updated

💧 Water 24.8° · ☀️ Air 14.6° · high today 24.2°

Temperature trend of recent weeks

Längsee, St. Georgen — Photo: C.Stadler/Bwag · CC BY-SA 4.0 · Wikimedia Commons

Water quality

EU classification: excellent · Visibility depth: 3.5 m

Measurement series & statistics

This measurement series includes 446 data points since July 7, 2026.

Lowest recorded value: 23.4 °C on July 25, 2026 · highest value: 28.5 °C on August 6, 2026.

Nearby waters

Längsee, Strandbad Längsee, Sankt Georgen · 0.1 km away24.8 °C Wörthersee, Strandbad Klagenfurt · 22.3 km away24.9 °C Wörthersee, Klagenfurt, Klagenfurt · 22.5 km away25.5 °C Maltschacher See, Briefelsdorf · 22.9 km away25.3 °C Klopeiner See, St. Kanzian, Sankt Kanzian am Klopeiner See · 23.5 km away24.3 °C

Frequently asked questions

Can you swim at Längsee right now?
The current water temperature is 24.8 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Längsee?
Currently 24.8 °C (updated continuously).

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

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