April in Campbell River is the windiest month of the year. In April, the weather in Campbell River is typically warm. Average daily high temperature in April is about 12 degrees above zero. On average, Campbell River has 17 rainy, 6 sunny, 6 partly cloudy, and 1 cloudy day in April. The rains are usually heavy. April as well as January, February, March, and October is considered the most uncomfortable time to visit Campbell River.