In August, the weather in Castrop-Rauxel is typically warm. Average daily high temperature in August is about 21 degrees above zero. On average, Castrop-Rauxel has 13 partly cloudy, 9 sunny, 8 rainy, and 1 cloudy day in August. The rains are usually moderate. August as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Castrop-Rauxel.