August in Inverness is the cloudiest month of the year. In August, the weather in Inverness is typically warm. Average daily high temperature in August is about 15 degrees above zero. On average, Inverness has 19 rainy, 9 cloudy, 2 sunny, and 1 partly cloudy day in August. The rains are usually moderate. August as well as January, February, March, and April is considered the most uncomfortable time to visit Inverness.