In March, the weather in Bandar Seri Begawan is typically hot. Average daily high temperature in March is about 29 degrees above zero. On average, Bandar Seri Begawan has 24 rainy, 5 cloudy, and 2 sunny days in March. The rains are usually heavy. March as well as January, February, April, and May is considered the most uncomfortable time to visit Bandar Seri Begawan.