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 23 rainy, 6 sunny, 1 cloudy, and 1 partly cloudy day in January. The rains are usually heavy. January as well as February, March, and December is considered the most uncomfortable time to visit Avarua.