April in Mio is the windiest month of the year. In April, the weather in Mio is typically cold. Average daily high temperature in April is about 9 degrees above zero. On average, Mio has 13 rainy, 10 cloudy, 5 sunny, and 2 partly cloudy days in April. The rains are usually moderate. April as well as March, October, and November is considered the most uncomfortable time to visit Mio.