In May, the weather in Kokkosalma is typically warm. Average daily high temperature in May is about 9 degrees above zero. On average, Kokkosalma has 14 rainy, 7 cloudy, 5 sunny, and 5 partly cloudy days in May. The rains are usually moderate. May as well as January, April, June, and September is considered the most uncomfortable time to visit Kokkosalma.