April in Achinsk is the rainiest month of the year. In April, the weather in Achinsk is typically cold. Average daily high temperature in April is about 5 degrees above zero. On average, Achinsk has 23 rainy, 5 cloudy, and 2 sunny days in April. The rains are usually light. April as well as January, February, May, and September is considered the most uncomfortable time to visit Achinsk.