Planning for the weather is a good way to make your trip to Kopaonik relaxing and enjoyable, especially when you're splurging. The hottest months are usually August and July with an average temp of 59°F, while the coldest months are January and February with an average of 29°F. The snowiest months in Kopaonik are January, November, April, and December, with each month seeing an average of 19 inches of snowfall.