April in Mossel Bay is the cloudiest month of the year. In April, the weather in Mossel Bay is typically warm. Average daily high temperature in April is about 23 degrees above zero. On average, Mossel Bay has 11 sunny, 10 partly cloudy, 7 rainy, and 2 cloudy days in April. The rains are usually light. April as well as January, February, March, and May is considered the most comfortable time to visit Mossel Bay.