In May, the weather in Thái Bình is typically hot. Average daily high temperature in May is about 31 degrees above zero. On average, Thái Bình has 17 rainy, 6 sunny, 4 cloudy, and 4 partly cloudy days in May. The rains are usually heavy. May as well as June, July, August, and September is considered the most uncomfortable time to visit Thái Bình.