weather in grand cayman in september
Average Weather in September in George Town Cayman Islands. In George Town, the month of September is characterized by essentially constant daily high temperatures, with daily highs around 84Â°F throughout the month, rarely exceeding 86Â°F or dropping below 83Â°F. Daily low temperatures are around 83Â°F, rarely falling below 81Â°F or exceeding 85Â°F.