July in Launceston is the coldest month of the year. In July, the weather in Launceston is typically warm. Average daily high temperature in July is about 10 degrees above zero. On average, Launceston has 14 partly cloudy, 11 sunny, and 6 rainy days in July. The rains are usually moderate. July as well as August and September is considered the most uncomfortable time to visit Launceston.