Ashtabula, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Ashtabula is known for its scenic Lake Erie beaches and charming harbor district. The best time to travel to Ashtabula, United States, is during the summer months of June to August, when the average air temperature is around 70-80°F and the water temperature in Lake Erie 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!