May in Tauranga is the sunniest month of the year. In May, the weather in Tauranga is typically warm. Average daily high temperature in May is about 14 degrees above zero. On average, Tauranga has 14 sunny, 11 rainy, 5 partly cloudy, and 1 cloudy day in May. The rains are usually heavy. May as well as July, August, and September is considered the most uncomfortable time to visit Tauranga.