In May, the weather in San Lucas Sacatepéquez is typically warm. Average daily high temperature in May is about 25 degrees above zero. On average, San Lucas Sacatepéquez has 20 rainy, 7 partly cloudy, and 4 sunny days in May. The rains are usually heavy. May as well as June, July, August, and September is considered the most uncomfortable time to visit San Lucas Sacatepéquez.