Coeur d'Alene, United States offers 22 beaches perfect for sunbathing, surfing, swimming, and more. Coeur d'Alene is known for Lake Coeur d'Alene, Silverwood Theme Park, and the Coeur d'Alene Resort. The best time to travel to Coeur d'Alene is during the summer months of June to August, when the average air temperature is around 75°F (24°C) and the water temperature in Lake Coeur d'Alene is approximately 68°F (20°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!