In October, the weather in San Cristobal de las Casas is typically warm. Average daily high temperature in October is about 24 degrees above zero. On average, San Cristobal de las Casas has 19 rainy, 7 partly cloudy, and 5 sunny days in October. The rains are usually heavy. October as well as May, June, July, and August is considered the most uncomfortable time to visit San Cristobal de las Casas.