Ona, Indonesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Ona, North Maluku, Indonesia, is known for its proximity to the historically significant Ternate and Tidore islands, which are famous for their role in the global spice trade. The best time to travel to Ona, Indonesia, is from May to September, 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!