January in Amahai is the rainiest, the cloudiest, and the hottest month of the year. In January, the weather in Amahai is typically hot. Average daily high temperature in January is about 29 degrees above zero. On average, Amahai has 30 rainy and 1 sunny day in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit Amahai.