Sister's Island, Singapore offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sister's Island, South West Region, Singapore, is known for its Sister's Islands Marine Park. The best time to visit Sister's 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!
