December in Varna is the windiest month of the year. In December, the weather in Varna is typically cold. Average daily high temperature in December is about 6 degrees above zero. On average, Varna has 11 partly cloudy, 10 sunny, 7 rainy, and 3 cloudy days in December. The rains are usually moderate. December as well as January, February, and March is considered the most uncomfortable time to visit Varna.