May in Olginsk is the windiest month of the year. In May, the weather in Olginsk is typically warm. Average daily high temperature in May is about 11 degrees above zero. On average, Olginsk has 12 rainy, 9 partly cloudy, 5 sunny, and 5 cloudy 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 Olginsk.