February in Dumai is the windiest month of the year. In February, the weather in Dumai is typically hot. Average daily high temperature in February is about 29 degrees above zero. On average, Dumai has 26 rainy, 2 cloudy, 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 Dumai.