Nilwella, Sri Lanka offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Nilwella is known for its proximity to the Hiriketiya Beach, a popular surfing destination. The best time to travel to Nilwella, Sri Lanka, is from December to March, with average air temperatures around 27°C (81°F) and water temperatures approximately 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!