December in Borovets is the windiest month of the year. In December, the weather in Borovets is typically freezing. Average daily high temperature in December is about zero. On average, Borovets has 7 rainy, 7 cloudy, 6 sunny, 6 partly cloudy, and 5 snowy days in December. The rains are usually heavy. December as well as February, March, April, and May is considered the most uncomfortable time to visit Borovets.