December in Pangkalan Bun is the coldest month of the year. In December, the weather in Pangkalan Bun is typically hot. Average daily high temperature in December is about 29 degrees above zero. On average, Pangkalan Bun has 31 rainy days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Pangkalan Bun.