Kosgoda, Sri Lanka offers 1 beach perfect for sunbathing, surfing, swimming, and more. Kosgoda is known for its turtle hatcheries and conservation efforts in regard to tourism. The best time to travel to Kosgoda, 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!