Eagles Mere, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Eagles Mere, Pennsylvania, United States, is known for its historic charm and scenic beauty, particularly the Eagles Mere Lake and the Eagles Mere Historic Village. The best time to travel to Eagles Mere, 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 in the lake is approximately 70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!