San Marine, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. San Marine, Oregon, United States, is not widely recognized as a major tourist destination and lacks specific proper nouns associated with tourism. The best time to travel to San Marino, United States, is during the summer months of June to August, when the average air temperature is around 75-85°F and the water temperature is approximately 70-75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!