Wareham, United States offers 31 beaches perfect for sunbathing, surfing, swimming, and more. Wareham is known for the Cape Cod Canal, Onset Beach, and Water Wizz water park. The best time to travel to Wareham, United States, is in late spring (May to June) when the average air temperature is around 60-70°F and the water temperature is approximately 55-65°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!