June in Manzanillo is the rainiest and the cloudiest month of the year. In June, the weather in Manzanillo is typically hot. Average daily high temperature in June is about 32 degrees above zero. On average, Manzanillo has 26 rainy and 4 sunny 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 Manzanillo.