July in Hua Hin is the cloudiest month of the year. In July, the weather in Hua Hin is typically hot. Average daily high temperature in July is about 30 degrees above zero. On average, Hua Hin has 24 rainy and 7 cloudy days in July. The rains are usually heavy. July as well as May, June, August, and September is considered the most uncomfortable time to visit Hua Hin.