July in Narayanganj is the rainiest, the windiest, and the cloudiest month of the year. In July, the weather in Narayanganj is typically hot. Average daily high temperature in July is about 31 degrees above zero. On average, Narayanganj has 29 rainy and 2 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 Narayanganj.