In October, the weather in Port Coquitlam is typically warm. Average daily high temperature in October is about 12 degrees above zero. On average, Port Coquitlam has 17 rainy, 8 sunny, and 6 partly cloudy 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 Coquitlam.