September in Lahad Datu is the cloudiest month of the year. In September, the weather in Lahad Datu is typically hot. Average daily high temperature in September is about 28 degrees above zero. On average, Lahad Datu has 29 rainy and 1 sunny day in September. The rains are usually heavy. September as well as January, February, March, and April is considered the most uncomfortable time to visit Lahad Datu.