In October, the weather in Guantanamo is typically hot. Average daily high temperature in October is about 30 degrees above zero. On average, Guantanamo has 21 rainy, 7 sunny, 2 cloudy, and 1 partly cloudy day in October. The rains are usually heavy. October as well as May, June, July, and August is considered the most uncomfortable time to visit Guantanamo.