September in Lae is the windiest month of the year. In September, the weather in Lae is typically warm. Average daily high temperature in September is about 24 degrees above zero. On average, Lae has 25 rainy, 3 cloudy, and 2 partly cloudy days in September. The rains are usually heavy. September as well as January, February, March, and April is considered the most uncomfortable time to visit Lae.