February in Nunukan is the sunniest and the hottest month of the year. In February, the weather in Nunukan is typically hot. Average daily high temperature in February is about 29 degrees above zero. On average, Nunukan has 28 rainy and 1 sunny day in February. The rains are usually heavy. February as well as January, March, April, and May is considered the most uncomfortable time to visit Nunukan.