June in Montego Bay is the rainiest and the cloudiest month of the year. In June, the weather in Montego Bay is typically hot. Average daily high temperature in June is about 29 degrees above zero. On average, Montego Bay has 20 rainy, 7 sunny, 2 partly cloudy, and 1 cloudy day in June. The rains are usually moderate. June as well as August, September, and October is considered the most uncomfortable time to visit Montego Bay.