Lac Léman water temperature

Lac Léman, Évian-les-Bains · Lake

The current water temperature at Lac Léman is 23.1 °C (as of September 1, 2026, source: Eawag/Alplakes model).

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

23.1 °C

Measured: September 1, 2026 · continuously updated

💧 Water 23.1° · ☀️ Air 16.1° · high today 24.3°

Temperature trend of recent weeks

Water quality

EU classification: excellent

Measurement series & statistics

This measurement series includes 477 data points since July 3, 2026.

Lowest recorded value: 22.1 °C on July 3, 2026 · highest value: 27.5 °C on August 12, 2026.

Nearby waters

Lac Léman, Thonon-les-Bains · 9.0 km away23.3 °C Lake Geneva, Lausanne, Vidy · 11.9 km away22.9 °C Lake Geneva, Baignade Vieux-Port d'Ouchy, Lausanne · 12.2 km away22.9 °C Venoge, Ecublens, Les Bois · 15.2 km away18.7 °C Aubonne, Allaman, Le Coulet · 16.1 km away11.5 °C

More measuring points: Lac Léman

Thonon-les-Bains23.3 °C

Frequently asked questions

Can you swim at Lac Léman right now?
The current water temperature is 23.1 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Lac Léman?
Currently 23.1 °C (updated continuously).

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

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