September in Martapura is the windiest month of the year. In September, the weather in Martapura is typically hot. Average daily high temperature in September is about 31 degrees above zero. On average, Martapura has 21 rainy, 5 sunny, 2 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 Martapura.