June in San Cristobal de las Casas is the cloudiest month of the year. In June, the weather in San Cristobal de las Casas is typically warm. Average daily high temperature in June is about 21 degrees above zero. On average, San Cristobal de las Casas has 30 rainy days in June. The rains are usually heavy. June as well as May, July, August, and September is considered the most uncomfortable time to visit San Cristobal de las Casas.