December in Uman is the windiest month of the year. In December, the weather in Uman is typically cold. Average daily high temperature in December is about zero. On average, Uman has 20 cloudy, 4 rainy, 4 sunny, and 3 snowy days in December. The rains are usually light. December as well as February, March, May, and November is considered the most uncomfortable time to visit Uman.