Planning for the weather is a good way to make your trip to Mieussy relaxing and enjoyable, especially when you’re splurging. 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 Mieussy are December, May, July and June, with each month seeing an average of 191 mm of rainfall.