September in Meithila is the rainiest month of the year. In September, the weather in Meithila is typically hot. Average daily high temperature in September is about 31 degrees above zero. On average, Meithila has 19 rainy, 5 cloudy, 4 sunny, and 2 partly cloudy days in September. The rains are usually moderate. September as well as June and August is considered the most uncomfortable time to visit Meithila.