Belleair Shore, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Belleair Shore is known for its exclusive residential beachfront and proximity to the Gulf of Mexico. The best time to travel to Belleair Shore, United States, is from March to May, when the average air temperature is around 75°F (24°C) and the water temperature is approximately 72°F (22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!