In October, the weather in Kosyu is typically freezing. Average daily high temperature in October is about 1 degree above zero. On average, Kosyu has 14 cloudy, 7 rainy, 5 snowy, 4 partly cloudy, and 1 sunny day in October. The rains are usually heavy. October as well as January, February, May, and June is considered the most uncomfortable time to visit Kosyu.