January in Boao is the coldest month of the year. In January, the weather in Boao is typically warm. Average daily high temperature in January is about 20 degrees above zero. On average, Boao has 24 rainy, 4 sunny, and 3 cloudy days in January. The rains are usually moderate. January as well as May, June, July, and August is considered the most uncomfortable time to visit Boao.