In May, the weather in Waingapu is typically warm. Average daily high temperature in May is about 27 degrees above zero. On average, Waingapu has 20 rainy, 8 sunny, 2 partly cloudy, and 1 cloudy day in May. The rains are usually heavy. May as well as January, February, March, and April is considered the most uncomfortable time to visit Waingapu.