May in Ninh Bình is the windiest month of the year. In May, the weather in Ninh Bình is typically hot. Average daily high temperature in May is about 31 degrees above zero. On average, Ninh Bình has 22 rainy, 4 sunny, 4 cloudy, and 1 partly cloudy day in May. The rains are usually heavy. May as well as June, July, August, and September is considered the most uncomfortable time to visit Ninh Bình.