In April, the weather in Sayanogorsk is typically cold. Average daily high temperature in April is about 8 degrees above zero. On average, Sayanogorsk has 14 rainy, 7 partly cloudy, 6 sunny, and 3 cloudy 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 Sayanogorsk.