April in Ca Mau is the hottest month of the year. In April, the weather in Ca Mau is typically hot. Average daily high temperature in April is about 32 degrees above zero. On average, Ca Mau has 25 rainy, 4 sunny, and 1 cloudy day in April. The rains are usually heavy. April as well as May, June, July, and August is considered the most uncomfortable time to visit Ca Mau.