Byblos, Lebanon offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Byblos is known for its ancient Phoenician ruins and the historic Byblos Castle. The best time to travel to Byblos, Lebanon, is from April to June, when the average air temperature is around 20-25°C (68-77°F) and the Mediterranean Sea temperature is approximately 19-23°C (66-73°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!