Ohonua, Tonga offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Ohonua is known for Eua National Park, which offers stunning hiking trails and birdwatching opportunities. The best time to travel to Ohonua, Tonga, is from May to October, with average air temperatures around 24-27°C (75-81°F) and water temperatures about 25-28°C (77-82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!