Lake Geneva water temperature

Lake Geneva, Montreux · Lake

The current water temperature at Lake Geneva is 23.2 °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.

23.2 °C

Measured: September 1, 2026 · continuously updated

💧 Water 23.2° · ☀️ Air 11.4° · high today 21.2°

Temperature trend of recent weeks

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

Measurement series & statistics

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

Lowest recorded value: 22.9 °C on August 31, 2026 · highest value: 27.4 °C on July 10, 2026.

Nearby waters

Rhône, Porte du Scex · 9.1 km away9.5 °C Lake Geneva, Baignade Vieux-Port d'Ouchy, Lausanne · 23.0 km away22.9 °C Lac Léman, Évian-les-Bains · 24.7 km away23.1 °C Lake Geneva, Lausanne, Vidy · 25.5 km away22.9 °C Venoge, Ecublens, Les Bois · 29.6 km away18.7 °C

More measuring points: Lake Geneva

Baignade Vieux-Port d'Ouchy, Lausanne22.9 °C Lausanne, Vidy22.9 °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 23.2 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Lake Geneva?
Currently 23.2 °C (updated continuously).

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