July weather forecast in Perth

July in Perth is the rainiest and the coldest month of the year. In July, the weather in Perth is typically warm. Average daily high temperature in July is about 17 degrees above zero. On average, Perth has 14 rainy, 10 sunny, and 7 partly cloudy days in July. The rains are usually heavy. July as well as June and August is considered the most uncomfortable time to visit Perth.