Hallstätter See water temperature

Hallstätter See, Lahn · Lake

The current water temperature at Hallstätter See is 19.2 °C (as of September 1, 2026, source: Hydrographie Land Oberösterreich).

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

19.2 °C

Measured: September 1, 2026 · continuously updated

💧 Water 19.2° · ☀️ Air 10.9° · high today 18.8°

Temperature trend of recent weeks

Hallstätter See — Photo: Nicholas Hartmann · CC BY-SA 4.0 · Wikimedia Commons

Water quality

EU classification: excellent

Measurement series & statistics

This measurement series includes 955 data points since July 3, 2026.

Lowest recorded value: 17.6 °C on July 6, 2026 · highest value: 24.4 °C on August 14, 2026.

Nearby waters

Hallstättersee, Hallstatt, Hallstatt · 0.2 km away21.3 °C Hallstättersee, Kesselgraben, Hallstatt · 1.2 km away21.8 °C Waldbach, Waldbachstrub · 1.5 km away5.4 °C Hallstättersee, Obertraun, Obertraun · 2.1 km away21.7 °C Traun, Obertraun · 5.4 km away15.9 °C

More measuring points: Hallstätter See

Steeg15.5 °C

Frequently asked questions

Can you swim at Hallstätter See right now?
The current water temperature is 19.2 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Hallstätter See?
Currently 19.2 °C (updated continuously).

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

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