Nainamadama, Sri Lanka offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Nainamadama is known for its proximity to the scenic beaches of the Negombo area and the vibrant local fish markets. The best time to travel to Nainamadama, Sri Lanka, is from December to March, with average air temperatures around 27°C (81°F) and water temperatures near 28°C (82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!