January in Yên Bái is the coldest month of the year. In January, the weather in Yên Bái is typically warm. Average daily high temperature in January is about 18 degrees above zero. On average, Yên Bái has 18 rainy, 6 partly cloudy, 4 sunny, and 3 cloudy days in January. The rains are usually heavy. January as well as March, April, May, and June is considered the most uncomfortable time to visit Yên Bái.