Sapphire, Saint Lucia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sapphire, Laborie, Saint Lucia, is known for its picturesque Sapphire Beach and the nearby Maria Islands Nature Reserve. The best time to travel to Sapphire, Saint Lucia, is from December to April, with average air temperatures around 80°F (27°C) and water temperatures near 82°F (28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!