Taking the local weather in Viuz-en-Sallaz into account can help you maximise your time at the pool during your trip. The hottest months are usually July and August, with an average temperature of 13°C, while the coldest months are January and February, with an average of -2°C. The rainiest months in Viuz-en-Sallaz are December, May, July and June, with each month seeing an average of 191 mm of rainfall.