May in Semporna is the hottest month of the year. In May, the weather in Semporna is typically hot. Average daily high temperature in May is about 29 degrees above zero. On average, Semporna has 25 rainy, 5 sunny, and 1 partly cloudy day in May. The rains are usually moderate. May as well as January, March, April, and June is considered the most uncomfortable time to visit Semporna.