April in Bandar Seri Begawan is the sunniest month of the year. In April, the weather in Bandar Seri Begawan is typically hot. Average daily high temperature in April is about 29 degrees above zero. On average, Bandar Seri Begawan has 25 rainy, 3 sunny, and 2 cloudy days in April. The rains are usually heavy. April as well as January, February, March, and May is considered the most uncomfortable time to visit Bandar Seri Begawan.