Varna, Bulgaria offers 25 beaches perfect for sunbathing, surfing, swimming, and more. Harstine, Washington, United States, is known for Harstine Island State Park, which offers scenic hiking trails and waterfront views. The best time to travel to Varna, Bulgaria, is from June to September, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 23°C (73°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!