August in Launceston is the cloudiest month of the year. In August, the weather in Launceston is typically warm. Average daily high temperature in August is about 12 degrees above zero. On average, Launceston has 13 rainy, 8 partly cloudy, 7 sunny, and 3 cloudy days in August. The rains are usually heavy. August as well as June, July, September, and October is considered the most uncomfortable time to visit Launceston.