October in San Miguel de Cozumel is the rainiest month of the year. In October, the weather in San Miguel de Cozumel is typically hot. Average daily high temperature in October is about 28 degrees above zero. On average, San Miguel de Cozumel has 21 rainy, 8 sunny, and 2 partly cloudy days in October. The rains are usually heavy. October as well as June, August, and September is considered the most uncomfortable time to visit San Miguel de Cozumel.