In April, the weather in Sumon Saylyg is typically cold. Average daily high temperature in April is about 5 degrees above zero. On average, Sumon Saylyg has 10 partly cloudy, 7 rainy, 7 cloudy, and 6 sunny days in April. The rains are usually moderate. April as well as January, February, October, and December is considered the most uncomfortable time to visit Sumon Saylyg.