In July, the weather in Sungai Petani is typically hot. Average daily high temperature in July is about 29 degrees above zero. On average, Sungai Petani has 24 rainy, 4 cloudy, and 3 partly cloudy days in July. The rains are usually heavy. July as well as March, April, May, and June is considered the most uncomfortable time to visit Sungai Petani.