January in Sofia is the snowiest, the cloudiest, and the coldest month of the year. In January, the weather in Sofia is typically cold. Average daily high temperature in January is about 1 degree above zero. On average, Sofia has 11 partly cloudy, 7 sunny, 5 snowy, 4 rainy, and 4 cloudy days in January. The snowfalls are usually moderate. January as well as February, March, April, and May is considered the most uncomfortable time to visit Sofia.