Planning for the weather is a good way to make your trip to Sainte-Agathe-des-Monts relaxing and enjoyable, especially when you're splurging. The hottest months are usually July and August, with an average temperature of 17°C, while the coldest months are January and February, with an average of -8°C. Average annual precipitation for Sainte-Agathe-des-Monts is 1442 mm.