Planning for the weather is an important factor for making your trip to Svilengrad a success, especially when you’re splurging. The hottest months are usually August and July with an average temp of 74°F, while the coldest months are January and February with an average of 41°F. The snowiest months in Svilengrad are January, February, March, and April, with each month seeing an average of 9 inches of snowfall.