In October, the weather in Port Moresby is typically hot. Average daily high temperature in October is about 29 degrees above zero. On average, Port Moresby has 19 rainy, 5 cloudy, 4 partly cloudy, and 3 sunny days in October. The rains are usually heavy. October as well as January, February, March, and April is considered the most uncomfortable time to visit Port Moresby.