March in Teresina is the rainiest and the coldest month of the year. In March, the weather in Teresina is typically hot. Average daily high temperature in March is about 30 degrees above zero. On average, Teresina has 28 rainy, 2 sunny, and 1 partly cloudy day in March. The rains are usually heavy. March as well as January, February, April, and December is considered the most uncomfortable time to visit Teresina.