In March, the weather in San Cristobal de las Casas is typically warm. Average daily high temperature in March is about 22 degrees above zero. On average, San Cristobal de las Casas has 16 partly cloudy, 9 sunny, 4 rainy, and 2 cloudy days in March. The rains are usually light. March as well as January, February, and December is considered the most comfortable time to visit San Cristobal de las Casas.