In April, the weather in Kotelnich is typically cold. Average daily high temperature in April is about 8 degrees above zero. On average, Kotelnich has 8 sunny, 8 cloudy, 7 partly cloudy, 6 rainy, and 1 snowy day in April. The rains are usually moderate. April as well as January, September, October, and December is considered the most uncomfortable time to visit Kotelnich.