May in Oktyabrskiy is the rainiest month of the year. In May, the weather in Oktyabrskiy is typically warm. Average daily high temperature in May is about 17 degrees above zero. On average, Oktyabrskiy has 21 rainy, 9 sunny, and 1 cloudy day in May. The rains are usually heavy. May as well as March is considered the most uncomfortable time to visit Oktyabrskiy.