August in Namatanai is the windiest and the sunniest month of the year. In August, the weather in Namatanai is typically hot. Average daily high temperature in August is about 28 degrees above zero. On average, Namatanai has 18 rainy, 11 sunny, 1 cloudy, and 1 partly cloudy day in August. The rains are usually heavy. August as well as January, February, March, and April is considered the most uncomfortable time to visit Namatanai.