Kylmakoski, Finland offers 1 beach perfect for sunbathing, surfing, swimming, and more. Carthage, Tennessee, United States, is known for the Cordell Hull Birthplace State Park and Museum. The best time to travel to Kylmakoski, Finland, is during the summer months of June to August, when the average air temperature is around 15-20°C (59-68°F) and the water temperature is approximately 15°C (59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!