In April, the weather in Port Coquitlam is typically warm. Average daily high temperature in April is about 11 degrees above zero. On average, Port Coquitlam has 23 rainy, 5 sunny, and 2 partly cloudy days in April. The rains are usually heavy. April as well as January, February, March, and October is considered the most uncomfortable time to visit Port Coquitlam.