September in Mambajao is the cloudiest month of the year. In September, the weather in Mambajao is typically hot. Average daily high temperature in September is about 28 degrees above zero. On average, Mambajao has 24 rainy, 5 cloudy, and 1 partly cloudy day in September. The rains are usually heavy. September as well as January, May, June, and July is considered the most uncomfortable time to visit Mambajao.