August in Yarmouth is the warmest month of the year. In August, the weather in Yarmouth is typically warm. Average daily high temperature in August is about 19 degrees above zero. On average, Yarmouth has 15 partly cloudy, 10 sunny, 4 rainy, and 2 cloudy days in August. The rains are usually light. August as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Yarmouth.