May in Neiba is the rainiest month of the year. In May, the weather in Neiba is typically hot. Average daily high temperature in May is about 29 degrees above zero. On average, Neiba has 11 partly cloudy, 10 sunny, 8 rainy, and 2 cloudy days in May. The rains are usually heavy. May as well as August, September, and October is considered the most uncomfortable time to visit Neiba.