April in Jan Thiel Baai is the cloudiest month of the year. In April, the weather in Jan Thiel Baai is typically warm. Average daily high temperature in April is about 27 degrees above zero. On average, Jan Thiel Baai has 12 partly cloudy, 10 cloudy, 7 sunny, and 1 rainy day in April. The rains are usually light. April as well as February, March, and May is considered the most comfortable time to visit Jan Thiel Baai.