Hawksbill Bay, Cayman Islands offers 1 beach perfect for sunbathing, surfing, swimming, and more. Hawksbill Bay, Sister Islands, Cayman Islands, is known for its pristine beaches and vibrant coral reefs ideal for snorkeling and diving. The best time to travel to Hawksbill Bay, 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!