In April, the weather in Charlottetown is typically cold. Average daily high temperature in April is about 3 degrees above zero. On average, Charlottetown has 11 partly cloudy, 8 sunny, 5 rainy, 5 cloudy, and 1 snowy day in April. The rains are usually heavy. April as well as May, October, November, and December is considered the most uncomfortable time to visit Charlottetown.