Savannah, Cayman Islands offers 4 beaches perfect for sunbathing, surfing, swimming, and more. George Town, Cayman Islands, is known for Seven Mile Beach, Stingray City, and the Cayman Islands National Museum. The best time to travel to Savannah, Cayman Islands, is between March and June, when the average air temperature is around 82°F (28°C) and the water temperature is approximately 80°F (27°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!