In August, the weather in San Francisco de Campeche is typically hot. Average daily high temperature in August is about 32 degrees above zero. On average, San Francisco de Campeche has 18 rainy, 7 partly cloudy, 5 sunny, and 1 cloudy day in August. The rains are usually heavy. August as well as June, July, and September is considered the most uncomfortable time to visit San Francisco de Campeche.