Castlegar, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Castlegar is known for its stunning natural landscapes and outdoor recreational activities. The best time to travel to Castlegar, Canada, is in July when the average air temperature is around 25°C (77°F) and the water temperature is approximately 18°C (64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!