Planning for the weather is a good way to make your trip to Val-Cenis relaxing and enjoyable, especially when you’re splurging. The hottest months are usually July and August, with an average temperature of 10°C, while the coldest months are January and February, with an average of -7°C. The rainiest months in Val-Cenis are December, May, November and January, with each month seeing an average of 179 mm of rainfall.