Lake Geneva water temperature

Lake Geneva, Lausanne, Vidy · Lake

The current water temperature at Lake Geneva is 22.9 °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.

22.9 °C

Measured: September 1, 2026 · continuously updated

💧 Water 22.9° · ☀️ Air 16.1° · high today 24.3°

Temperature trend of recent weeks

Lake Geneva — Photo: FrauDasgupta · CC BY-SA 3.0 · Wikimedia Commons

Water quality

EU classification: excellent

Measurement series & statistics

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

Lowest recorded value: 21.8 °C on July 5, 2026 · highest value: 26.9 °C on August 8, 2026.

Nearby waters

Lake Geneva, Baignade Vieux-Port d'Ouchy, Lausanne · 2.6 km away22.9 °C Venoge, Ecublens, Les Bois · 4.5 km away18.7 °C Lac Léman, Évian-les-Bains · 11.9 km away23.1 °C Aubonne, Allaman, Le Coulet · 14.9 km away11.5 °C Lac Léman, Thonon-les-Bains · 17.5 km away23.3 °C

More measuring points: Lake Geneva

Montreux23.2 °C Baignade Vieux-Port d'Ouchy, Lausanne22.9 °C Nyon22.4 °C Genève, Bains des Pâquis22.3 °C Plage du Vengeron, Bellevue22.3 °C Plage Gitana, Bellevue22.3 °C

Frequently asked questions

Can you swim at Lake Geneva right now?
The current water temperature is 22.9 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Lake Geneva?
Currently 22.9 °C (updated continuously).

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

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