In September, the weather in Banda Aceh is typically hot. Average daily high temperature in September is about 28 degrees above zero. On average, Banda Aceh has 20 rainy, 5 cloudy, 3 partly cloudy, and 2 sunny days in September. The rains are usually heavy. September as well as January, March, April, and May is considered the most uncomfortable time to visit Banda Aceh.