May in Olekma is the rainiest and the windiest month of the year. In May, the weather in Olekma is typically cold. Average daily high temperature in May is about 8 degrees above zero. On average, Olekma has 18 rainy, 6 sunny, 4 cloudy, and 3 partly cloudy days in May. The rains are usually moderate. May as well as January, February, March, and September is considered the most uncomfortable time to visit Olekma.