Primorsko, Bulgaria offers 8 beaches perfect for sunbathing, surfing, swimming, and more. Primorsko is known for its beautiful beaches and vibrant summer tourism scene. The best time to travel to Primorsko, Bulgaria, is from June to September, when the average air temperature ranges from 25°C to 30°C (77°F to 86°F) and the sea temperature is around 23°C to 26°C (73°F to 79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!