March in Oviedo is the windiest month of the year. In March, the weather in Oviedo is typically warm. Average daily high temperature in March is about 13 degrees above zero. On average, Oviedo has 15 rainy, 9 partly cloudy, 6 sunny, and 1 cloudy 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 Oviedo.