March weather forecast in Santarem

March in Santarem is the rainiest and the cloudiest month of the year. In March, the weather in Santarem is typically hot. Average daily high temperature in March is about 28 degrees above zero. On average, Santarem has 31 rainy days in March. The rains are usually heavy. March as well as January, February, April, and May is considered the most uncomfortable time to visit Santarem.