In September, the weather in Nauru International Airport is typically hot. Average daily high temperature in September is about 28 degrees above zero. On average, Nauru International Airport has 18 rainy, 7 sunny, 4 partly cloudy, and 1 cloudy 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 Nauru International Airport.