Question 1

What is the temperature of Lake Joux today?

Accepted Answer

The water temperature of Lake Joux is calculated at 0.2 m depth in real time using a hydrodynamic model, at 7 locations. Data is updated in real time.

Question 2

Where to swim in Lake Joux?

Accepted Answer

We monitor water temperature at 7 swimming spots around Lake Joux. Each location has a dedicated page with real-time temperature, history and forecasts.

Question 3

How is the water temperature calculated?

Accepted Answer

Temperatures are calculated at 0.2 m depth by a hydrodynamic model (Delft3D-Flow) fed with weather data and field measurements. Results are updated in real time.

Lake Joux temperature