April in Bratsk is the rainiest month of the year. In April, the weather in Bratsk is typically cold. Average daily high temperature in April is about 4 degrees above zero. On average, Bratsk has 15 rainy, 8 cloudy, 4 partly cloudy, and 3 sunny days in April. The rains are usually light. April as well as January, February, and December is considered the most uncomfortable time to visit Bratsk.