October in Cayman Brac is the rainiest and the cloudiest month of the year. In October, the weather in Cayman Brac is typically hot. Average daily high temperature in October is about 28 degrees above zero. On average, Cayman Brac has 22 rainy, 5 sunny, 3 partly cloudy, and 1 cloudy day in October. The rains are usually heavy. October as well as August and September is considered the most uncomfortable time to visit Cayman Brac.