May in Olyokminsk is the windiest month of the year. In May, the weather in Olyokminsk is typically warm. Average daily high temperature in May is about 10 degrees above zero. On average, Olyokminsk has 12 rainy, 8 cloudy, 7 partly cloudy, and 4 sunny days in May. The rains are usually light. May as well as January, February, March, and September is considered the most uncomfortable time to visit Olyokminsk.