Taking the local weather in Saint-Jean-de-Tholome 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 14°C, while the coldest months are January and February, with an average of -2°C. The rainiest months in Saint-Jean-de-Tholome are May, December, June and July, with each month seeing an average of 177 mm of rainfall.