January in Avarua is the rainiest month of the year. In January, the weather in Avarua is typically warm. Average daily high temperature in January is about 26 degrees above zero. On average, Avarua has 21 rainy, 5 sunny, 3 partly cloudy, and 2 cloudy days in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit Avarua.