Okinawa is Japan's subtropical island chain — geographically and culturally distinct from the Japanese mainland, with turquoise water, coral reefs, and a warm climate year-round. Japan's southernmost prefecture, it stretches 1,000km from the main island down to the Yaeyama Islands near Taiwan. For beach travel, Okinawa offers some of East Asia's finest coastal scenery and clearest water.
Main Island Okinawa
Naha is the capital and airport hub. The main island's most visited beach area is the central resort zone (American Village, Moon Beach) with full hotel infrastructure. Better beaches are in the north:
Emerald Beach (Motobu): Adjacent to Ocean Expo Park with the famous Churaumi Aquarium. White sand, calm water, free entry. The aquarium (¥2,180) is one of the world's largest, featuring the second-largest fish in the world, whale sharks.
Okuma Beach (northern tip): One of the main island's best beaches — longer, less crowded, beautiful water. Camp facilities and resort accommodation.
The main island also has Okinawa's cultural sites: Shurijo Castle (UNESCO World Heritage, recently restored after a 2019 fire), traditional Ryukyu Kingdom villages, and the Okinawa Prefectural Museum.
Miyako-jima
A 45-minute flight from Naha, Miyako is consistently ranked among Japan's finest beach destinations. The water visibility reaches 40+ metres; the beaches are flat, white, and uncrowded by comparison to Thai or Bali resorts. Key beaches:
Yonaha Maehama: 7km of white sand consistently voted Japan's best beach. The water is crystalline and shallow for a long distance. Resort hotels line the back of the beach.
Sunayama Beach: More dramatic than Yonaha Maehama, with rock formations and a natural arch. Reached by a short walk through sand dunes from the car park.
Yaeyama Islands (Ishigaki, Iriomote)
Japan's most remote and spectacular island chain, about 2 hours flight from Naha. Ishigaki is the transport hub; Iriomote and Taketomi are reached by ferry.
Kabira Bay (Ishigaki): An enclosed bay with brilliantly turquoise water and small forested islands. Famous but swimming is not permitted to protect coral — glass-bottom boat tours operate.
Iriomote Island: Over 90% covered in subtropical jungle — one of Japan's last true wilderness areas. The Urauchi River boat trip and mangrove kayaking are the main activities. Snorkelling and diving from the surrounding reefs is superb.
Taketomi Island: A tiny island with a preserved Ryukyu village of traditional stone walls and red-tile roofs. Explore by water buffalo cart. Beautiful Kondoi Beach with shallow turquoise water.
Water Sports and Diving
Okinawa is Japan's premier diving destination. The Yaeyama Islands in particular have warm, clear water and diverse coral reef ecosystems. Popular dive sites: Blue Cave (main island), Manta Scramble (Miyako — seasonal manta rays), and numerous sites around Iriomote. Diving operators on all islands offer certification courses and guided dives. Snorkelling is excellent near most beaches from April through November.
When to Go
April–June: Before rainy season ends, warm water, moderate crowds. July–September: Hottest and most humid, peak typhoon season (especially August–September), but also most vibrant. October–November: Best overall balance — post-typhoon, still warm, fewer crowds, excellent visibility for diving. December–March: Mild compared to mainland Japan but not beach weather — whale watching season (humpbacks, January–March).