Velanai, Sri Lanka offers 1 beach perfect for sunbathing, surfing, swimming, and more. Velanai is known for its beautiful beaches and the historic Nagadeepa Purana Vihara. The best time to travel to Velanai, Sri Lanka, is from January 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!