January in Pangkalan Bun is the rainiest and the cloudiest month of the year. In January, the weather in Pangkalan Bun is typically hot. Average daily high temperature in January is about 30 degrees above zero. On average, Pangkalan Bun has 31 rainy days in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit Pangkalan Bun.