Pooneryn, Sri Lanka offers 1 beach perfect for sunbathing, surfing, swimming, and more. Pooneryn is known for its proximity to the Jaffna Peninsula and the scenic Pooneryn Fort. The best time to travel to Pooneryn, 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!