April in Bolshoe Svistovo is the rainiest month of the year. In April, the weather in Bolshoe Svistovo is typically warm. Average daily high temperature in April is about 10 degrees above zero. On average, Bolshoe Svistovo has 15 rainy, 7 cloudy, 5 sunny, and 3 partly cloudy days in April. The rains are usually moderate. April as well as January, March, October, and November is considered the most uncomfortable time to visit Bolshoe Svistovo.