Warm enough for jumping into the water? Water temperature of rivers and streams (FOEN)
The FOEN has been operating a temperature monitoring network in watercourses since the 1970s. Care is taken to ensure that the measurements take on one bank of the river yield representative results for the entire river cross-section.
Link to the map: map.geo.admin.ch
The map provides an overview of current water temperatures in Switzerland's rivers (24-hour peak values). The monitoring network comprises around 80 stations.