July in Yên Bái is the rainiest month of the year. In July, the weather in Yên Bái is typically hot. Average daily high temperature in July is about 31 degrees above zero. On average, Yên Bái has 30 rainy and 1 sunny day in July. The rains are usually heavy. July as well as May, June, and August is considered the most uncomfortable time to visit Yên Bái.