Niebla, Chile offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Niebla is known for the Niebla Fort, a historic Spanish colonial fortification that is part of the Valdivian Fort System. The best time to travel to Niebla, Chile, is during the summer months of December to February, when the average air temperature is around 63°F (17°C) and the water temperature is approximately 59°F (15°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!