temperature in cuba in september
Weather in Cuba in September. The average maximum daytime temperature in Cuba in September is a hot 31Â°C (88Â°F) with very high heat & humidity. There are usually 10 hours of bright sunshine each day, which represents 82% of the 12 hours of daylight. The average sea temperature in and around Cuba in September is 29Â°C (84Â°F). Expect 174mm (6.9 inches) of rainfall across the whole of September with 13 days with some rain falling. Maximum UV levels will be extreme (11 UV index) at midday when the skies are clear.