Okay, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Okay, Oklahoma, United States, is not widely recognized for specific tourist attractions or proper nouns. The best time to travel to Oklahoma, United States, is in late spring (May), when the average air temperature is around 70°F (21°C) and the average water temperature in lakes is approximately 65°F (18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!