November in Willemstad is the rainiest month of the year. In November, the weather in Willemstad is typically hot. Average daily high temperature in November is about 28 degrees above zero. On average, Willemstad has 19 rainy, 8 sunny, and 3 partly cloudy days in November. The rains are usually heavy. November as well as October and December is considered the most uncomfortable time to visit Willemstad.