October in Port-Gentil is the rainiest month of the year. In October, the weather in Port-Gentil is typically warm. Average daily high temperature in October is about 26 degrees above zero. On average, Port-Gentil has 30 rainy and 1 sunny day 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-Gentil.