Monas, Indonesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Gorontalo, Indonesia, is known for its stunning Olele Marine Park and the historical Fort Otanaha. The best time to visit Monas, Indonesia, is during the dry season from May to September, with average air temperatures around 28°C (82°F) and water temperatures near 29°C (84°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!