September in Nuku Hiva is the sunniest and the coldest month of the year. In September, the weather in Nuku Hiva is typically warm. Average daily high temperature in September is about 26 degrees above zero. On average, Nuku Hiva has 24 sunny and 6 rainy days in September. The rains are usually light. September as well as June, August, and October is considered the most comfortable time to visit Nuku Hiva.