March in Valparaiso is the sunniest month of the year. In March, the weather in Valparaiso is typically warm. Average daily high temperature in March is about 16 degrees above zero. On average, Valparaiso has 25 sunny, 5 partly cloudy, and 1 rainy day in March. The rains are usually light. March as well as January, February, and December is considered the most comfortable time to visit Valparaiso.