Phippsburg, United States offers 8 beaches perfect for sunbathing, surfing, swimming, and more. Phippsburg is known for Popham Beach State Park and Fort Popham. The best time to travel to Phippsburg, United States, is during the summer months of June to August, when the average air temperature is around 70-75°F and the water temperature is approximately 60-65°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!