May in Ol'ginskoe is the rainiest month of the year. In May, the weather in Ol'ginskoe is typically warm. Average daily high temperature in May is about 19 degrees above zero. On average, Ol'ginskoe has 22 rainy and 9 sunny days in May. The rains are usually heavy. May as well as January and February is considered the most uncomfortable time to visit Ol'ginskoe.