Kalmunai, Sri Lanka offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Kalmunai is known for its proximity to the scenic Kumana National Park and the historic Batticaloa Lighthouse. The best time to travel to Kalmunai, Sri Lanka, is from May to September, with average air temperatures around 28-32°C (82-90°F) and water temperatures around 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!