In April, the weather in Gander is typically cold. Average daily high temperature in April is about 6 degrees above zero. On average, Gander has 13 cloudy, 6 rainy, 6 partly cloudy, 4 sunny, and 1 snowy day in April. The rains are usually heavy. April as well as March, May, October, and November is considered the most uncomfortable time to visit Gander.