May in Biyka is the windiest month of the year. In May, the weather in Biyka is typically warm. Average daily high temperature in May is about 13 degrees above zero. On average, Biyka has 14 rainy, 10 sunny, and 7 partly cloudy days in May. The rains are usually heavy. May as well as January, February, April, and October is considered the most uncomfortable time to visit Biyka.