In May, the weather in Yên Bái is typically hot. Average daily high temperature in May is about 31 degrees above zero. On average, Yên Bái has 25 rainy, 4 sunny, 1 cloudy, and 1 partly cloudy day in May. The rains are usually heavy. May as well as June, July, and August is considered the most uncomfortable time to visit Yên Bái.