March in Guantanamo is the windiest month of the year. In March, the weather in Guantanamo is typically hot. Average daily high temperature in March is about 28 degrees above zero. On average, Guantanamo has 22 sunny, 6 partly cloudy, and 3 rainy days in March. The rains are usually light. March as well as January, February, and December is considered the most comfortable time to visit Guantanamo.