August in Kastellaun is the sunniest month of the year. In August, the weather in Kastellaun is typically warm. Average daily high temperature in August is about 21 degrees above zero. On average, Kastellaun has 11 sunny, 11 partly cloudy, 7 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 Kastellaun.