Kasilof, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Kasilof is known for the Kasilof River, which is popular for salmon fishing and outdoor recreation. The best time to travel to Kasilof, United States, is during July when the average air temperature is around 60°F (15°C) and the water temperature is approximately 50°F (10°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!