May in Uman is the rainiest month of the year. In May, the weather in Uman is typically warm. Average daily high temperature in May is about 19 degrees above zero. On average, Uman has 17 rainy, 11 sunny, 2 partly cloudy, and 1 cloudy day in May. The rains are usually moderate. May as well as February, March, November, and December is considered the most uncomfortable time to visit Uman.