Semakau Island, Singapore offers 1 beach perfect for sunbathing, surfing, swimming, and more. Semakau Island is known for the Semakau Landfill, which is an eco-friendly waste management site that also offers guided tours showcasing its unique blend of nature and technology. The best time to visit Semakau Island, Singapore, is from February to April, with average air temperatures around 27-31°C (81-88°F) and water temperatures approximately 28-30°C (82-86°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!