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