August in Neiafu is the coldest month of the year. In August, the weather in Neiafu is typically warm. Average daily high temperature in August is about 24 degrees above zero. On average, Neiafu has 13 partly cloudy, 12 sunny, 5 rainy, and 1 cloudy day in August. The rains are usually heavy. August as well as June and July is considered the most comfortable time to visit Neiafu.