January in Port Douglas is the rainiest and the cloudiest month of the year. In January, the weather in Port Douglas is typically hot. Average daily high temperature in January is about 28 degrees above zero. On average, Port Douglas has 25 rainy, 4 cloudy, and 2 partly cloudy days in January. The rains are usually heavy. January as well as February, March, April, and December is considered the most uncomfortable time to visit Port Douglas.