July in Port-Gentil is the windiest and the coldest month of the year. In July, the weather in Port-Gentil is typically warm. Average daily high temperature in July is about 24 degrees above zero. On average, Port-Gentil has 19 cloudy, 8 partly cloudy, and 4 sunny days in July. July as well as June and August is considered the most comfortable time to visit Port-Gentil.