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