January in Port Lincoln is the sunniest and the warmest month of the year. In January, the weather in Port Lincoln is typically warm. Average daily high temperature in January is about 25 degrees above zero. On average, Port Lincoln has 17 sunny, 8 partly cloudy, 3 rainy, and 3 cloudy days in January. The rains are usually light. January as well as February, March, and December is considered the most comfortable time to visit Port Lincoln.