March in Sobral is the rainiest month of the year. In March, the weather in Sobral is typically hot. Average daily high temperature in March is about 29 degrees above zero. On average, Sobral has 28 rainy, 2 cloudy, and 1 sunny day in March. The rains are usually heavy. March as well as January, February, April, and May is considered the most uncomfortable time to visit Sobral.