April in Port Moresby is the rainiest month of the year. In April, the weather in Port Moresby is typically hot. Average daily high temperature in April is about 29 degrees above zero. On average, Port Moresby has 20 rainy, 5 cloudy, 3 sunny, and 2 partly cloudy days in April. The rains are usually moderate. April as well as March is considered the most uncomfortable time to visit Port Moresby.