January in Bau-Bau is the rainiest month of the year. In January, the weather in Bau-Bau is typically hot. Average daily high temperature in January is about 28 degrees above zero. On average, Bau-Bau has 29 rainy and 2 sunny 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 Bau-Bau.