In May, the weather in Kokkosalma is typically warm. Average daily high temperature in May is about 10 degrees above zero. On average, Kokkosalma has 10 rainy, 8 partly cloudy, 7 cloudy, and 6 sunny days in May. The rains are usually moderate. May as well as January, February, April, and September is considered the most uncomfortable time to visit Kokkosalma.