March in San Cristobal de las Casas is the windiest month of the year. In March, the weather in San Cristobal de las Casas is typically warm. Average daily high temperature in March is about 27 degrees above zero. On average, San Cristobal de las Casas has 21 sunny, 6 partly cloudy, and 4 rainy days in March. The rains are usually light.