July in Lào Cai is the rainiest and the warmest month of the year. In July, the weather in Lào Cai is typically hot. Average daily high temperature in July is about 28 degrees above zero. On average, Lào Cai has 23 rainy, 5 cloudy, 2 sunny, and 1 partly cloudy day in July. The rains are usually moderate. July as well as June and August is considered the most uncomfortable time to visit Lào Cai.