Planning for the weather is an important factor for making your trip to Ilidža a success, especially when you're splurging. The hottest months are usually August and July with an average temp of 65°F, while the coldest months are January and February with an average of 34°F. The snowiest months in Ilidža are January, December, April, and November, with each month seeing an average of 6 inches of snowfall.