April in Newburyport is the cloudiest month of the year. In April, the weather in Newburyport is typically warm. Average daily high temperature in April is about 13 degrees above zero. On average, Newburyport has 10 rainy, 9 sunny, 8 partly cloudy, and 3 cloudy days in April. The rains are usually heavy. April as well as January, February, March, and November is considered the most uncomfortable time to visit Newburyport.