Cayon, Saint Kitts and Nevis offers 1 beach perfect for sunbathing, surfing, swimming, and more. Cayon, Saint Mary Cayon, Saint Kitts and Nevis, is known for the scenic beauty of the lush rainforest and the historic St. Mary's Anglican Church. The best time to travel to Cayon, Saint Kitts and Nevis, is from December to April, with average air temperatures around 77-82°F (25-28°C) and water temperatures near 79-82°F (26-28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!