April in Biala is the sunniest month of the year. In April, the weather in Biala is typically warm. Average daily high temperature in April is about 14 degrees above zero. On average, Biala has 10 rainy, 8 sunny, 8 partly cloudy, and 4 cloudy days in April. The rains are usually moderate. April as well as January, February, March, and October is considered the most uncomfortable time to visit Biala.