January in Kuala Belait is the coldest month of the year. In January, the weather in Kuala Belait is typically hot. Average daily high temperature in January is about 28 degrees above zero. On average, Kuala Belait has 30 rainy and 1 sunny day in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit Kuala Belait.