Nilaveli, Sri Lanka offers 1 beach perfect for sunbathing, surfing, swimming, and more. Nilaveli is known for Pigeon Island National Park and its pristine beaches. The best time to travel to Nilaveli, Sri Lanka, is from May to September, when the average air temperature is around 28-32°C (82-90°F) and the water temperature is approximately 27-29°C (81-84°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!