May in Novyy Bor is the rainiest month of the year. In May, the weather in Novyy Bor is typically cold. Average daily high temperature in May is about 6 degrees above zero. On average, Novyy Bor has 24 rainy, 5 cloudy, and 2 sunny days in May. The rains are usually moderate. May as well as January, February, August, and September is considered the most uncomfortable time to visit Novyy Bor.