July in Alotau is the windiest and the coldest month of the year. In July, the weather in Alotau is typically warm. Average daily high temperature in July is about 25 degrees above zero. On average, Alotau has 28 rainy, 2 sunny, and 1 cloudy day in July. The rains are usually heavy. July as well as January, February, March, and April is considered the most uncomfortable time to visit Alotau.