Kalasey Satu, Indonesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Kalasey Satu, North Sulawesi, Indonesia, is known for its vibrant marine biodiversity and popular diving spots. The best time to travel to Kalasey Satu, Indonesia, is 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!