September in Tauranga is the rainiest month of the year. In September, the weather in Tauranga is typically warm. Average daily high temperature in September is about 13 degrees above zero. On average, Tauranga has 15 rainy, 8 sunny, 6 partly cloudy, and 1 cloudy day in September. The rains are usually heavy. September as well as May, July, and August is considered the most uncomfortable time to visit Tauranga.