Garapan, Northern Mariana Islands offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Garapan, Saipan is known for the American Memorial Park and Micro Beach. The best time to travel to Garapan, Northern Mariana Islands, is from December to June, with average air temperatures around 80°F (27°C) and water temperatures near 82°F (28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!