Okinawa: Beaches, Ryukyu Culture and the Kerama Islands

· 8 min read Region Guide
Clear turquoise water over coral reef in the Kerama Islands, Okinawa

Okinawa is Japan’s southernmost prefecture and its most un-Japanese — a subtropical archipelago of 160 islands stretching 1,000 km from the southern tip of Kyushu to within 110 km of Taiwan. For 450 years before Japanese annexation in 1879, these islands formed the independent Ryukyu Kingdom, a maritime trading state that developed its own language, performing arts, castle architecture, and food culture from its position between Japan, China, and Southeast Asia.

The main island (Okinawa Honto) has the history, the food, and the beaches closest to Naha. The outer islands — Kerama, Miyako, Ishigaki, Iriomote — have the clearest water and the most complete sense of being somewhere genuinely separate. Both are worth your time.

Naha

Naha is Okinawa’s capital and the entry point for most visitors — direct flights connect from Tokyo (2h30min), Osaka (1h50min), and Fukuoka (1h20min). The international airport is 5 minutes from Naha downtown by monorail.

Kokusai-dori (“International Street”) is the 1.6-km main shopping avenue, rebuilt from rubble after the Battle of Okinawa in 1945 and now a mix of Okinawan craft shops, awamori distilleries, shisa lion-dog figurine stores, and restaurants. The narrow shopping arcades (ichiba) that run perpendicular to Kokusai-dori — particularly Makishi Market — have more local character: butchers selling pigs’ trotters and snout, tofu shops open from 6am, and a second floor of restaurants where vendors cook what you buy below (charging a small cooking fee).

Shuri Castle (Shurijo) is the great monument of the Ryukyu Kingdom: a UNESCO World Heritage Site whose orange-vermilion walls and tiered royal halls differ from any Japanese or Chinese castle model — evidence of the kingdom’s independent architectural tradition. The main Seiden (royal hall) was destroyed in the Battle of Okinawa in 1945 and rebuilt from historical records by 1992; it burned again in 2019 and restoration work is ongoing (completion estimated mid-2020s). Parts of the castle grounds remain open; check current access before visiting. Entry to the castle grounds varies by section (full access ¥400–¥1,000 when complete, as of 2026).

Tamaudun Mausoleum — the royal family tomb, a few minutes from Shuri Castle, is better preserved and less crowded. Entry ¥300. The limestone carving and tripartite chamber design (one chamber for bodies awaiting decomposition, two for cleaned royal bones) reflect distinctly Ryukyuan burial practice.

The Okinawa Prefectural Museum and Art Museum (entry ¥530, as of 2026) covers the full span of Ryukyuan history from the shell mounds of 7,000 years ago through the Kingdom and World War II. The museum’s display of traditional Ryukyuan textile arts (bingata dyeing, bashofu plantain-fibre weaving) is among the best in Japan.

Okinawa Main Island Beaches and Sights

Churaumi Aquarium in northern Okinawa (entry ¥2,180, as of 2026, open 8:30am–6:30pm) contains one of the world’s largest single-tank aquarium exhibits — the Kuroshio Sea tank holds whale sharks and manta rays alongside the full Okinawan reef ecosystem. The aquarium is part of the larger Ocean Expo Park (park entry free); allow 3–4 hours. From Naha by car: 2h on the Okinawa Expressway (¥1,100 toll each way) or 2h30min by express bus (¥2,000 each way).

Cape Manzamo (Manzamo Misaki) is an eroded limestone cliff on the west coast, with views of the East China Sea and the characteristic wave-carved elephant-trunk rock formation. Entry free, small parking fee. At sunset the colours on the water are notable.

Nakagusuku Castle Ruins and Katsuren Castle Ruins — two of Okinawa’s nine UNESCO World Heritage Castle sites — are less visited than Shuri but in better original condition. Katsuren (entry ¥600) stands on a hill with 360-degree sea views; the stone ramp construction is typical of Ryukyuan gusuku castle architecture that has no parallel in Japan or China.

Peace Memorial Park (Mabuni Hill, south Okinawa): The Battle of Okinawa in 1945 killed approximately 200,000 people — about one-third of the pre-war civilian population along with most of the Japanese garrison and 12,000 Americans. The park contains the Cornerstone of Peace, with 241,000 names of everyone who died, by nationality (including Okinawan civilians, Japanese soldiers, American soldiers, and Korean labourers). The Okinawa Prefectural Peace Memorial Museum (entry ¥300) documents the battle and its aftermath with depth and restraint. Entry free to the grounds; the Himeyuri Peace Museum (¥310, 20 minutes away by car) specifically covers the story of the student nurses mobilised into the battle.

Kerama Islands

The Kerama Islands (Keramashoto) — a cluster of small islands 30–40 km west of Naha — are the most accessible introduction to Okinawa’s outer island diving and snorkelling. The water here won a designation as a Kerama Blue benchmark for visibility and colour. From Naha’s Tomari Port, high-speed ferries reach Zamami (50–70 minutes, ¥3,200 one way as of 2026) and Tokashiki (35 minutes, ¥2,160) daily.

Zamami Island (6 km², population about 600) has two main beaches — Furuzamami and Ama beach — with direct snorkelling off the shore across coral and reef fish. Sea turtle sightings are common from March to September. Dive shops offer introductory dives (from ¥8,000) and equipment rental. Stay overnight for the full effect: the island is quiet after the last ferry leaves, and the night sky, well away from Naha’s light pollution, is remarkable.

Tokashiki Island (13 km²) is the largest Kerama island and the most developed for tourism. Aharen Beach and Tokashiku Beach have clear water and nearby dive sites; several guesthouses and campsite options.

Both islands can be day-tripped from Naha, though one or two nights gives a very different experience. Accommodation on the islands is primarily small guesthouses (minshuku) with meals; expect ¥8,000–¥15,000 per person with dinner and breakfast.

Ishigaki and the Yaeyama Islands

Ishigaki is the hub of the Yaeyama Islands at the far southwest end of the Okinawa archipelago — 410 km from Naha and 270 km from Taiwan. Direct flights from Tokyo (3h30min), Osaka (2h30min), and Naha (1h) make it accessible without going through the main island.

Kabira Bay on Ishigaki’s northwest coast cannot be swum in (the bay is a protected black pearl cultivation area) but is glass-bottomed-boat territory: the water is shallow, bright green to turquoise, and islands dot the bay. Glass-bottomed boat tours from the bay car park run ¥1,050 for 30 minutes (as of 2026).

Taketomi Island is a 10-minute ferry from Ishigaki (¥730 each way) and has the best-preserved Ryukyuan village architecture in the archipelago: low coral-wall compounds, shisa lions on every roof, sandy lanes between traditional houses with bougainvillea and hibiscus. No cars in the village centre; explore by rental bicycle (¥500/hour). Population is about 350, but the island receives far more day visitors than residents.

Iriomote Island (45 minutes by ferry from Ishigaki, ¥2,690 each way) is 90% UNESCO-designated subtropical jungle and has one road around its perimeter. The interior — mangrove rivers, waterfalls, and the Urauchi River gorge — is accessed by kayak and on foot. The Iriomote Yamaneko (Iriomote cat) is found only on this island; approximately 100 individuals remain. Jungle kayaking tours from ¥6,000 per person; waterfall trekking tours from ¥7,500.

Miyako-jima

Miyako-jima is the competitor to Ishigaki for Japan’s clearest water: the Miyako Blue is a specific designation for the visibility and colour of the surrounding sea. The island (290 km from Ishigaki, direct flights from Naha in 45 minutes) has extensive sandy beaches on its western and southern coasts.

Yonaha Maehama Beach is frequently cited as Japan’s best beach: 7 km of fine white sand on the south coast, very shallow entry, and the Miyako Blue water extending to the horizon. The beach has rental chairs and watersports but no large resort hotels directly on it.

Irabu Island connects to Miyako by bridge (opened 2015, 3.5 km) and has the Irabu-jima dive sites — some of the most dramatic in Japan, with underwater caves, drop-offs, and large fish aggregations. The island itself is quieter than Miyako, with small fishing settlements and a handful of guesthouses.

Getting to Okinawa

From Tokyo Haneda to Naha: approximately 2h30min, with dozens of daily flights. ANA and JAL operate frequent services; budget carriers Peach and Jetstar fly from Narita for lower fares. The JR Pass does not cover any part of Okinawa (there is no rail connection).

Ishigaki and Miyako have their own airports with direct connections from Tokyo, Osaka, and Naha. For island-hopping, inter-island flights (30–60 minutes) and ferries (30 minutes to several hours depending on route) connect the main islands.

Plan your Okinawa visit: Tours and activities across Okinawa cover the region’s top experiences. Flights to Japan — compare early, especially for travel to regional airports outside Tokyo. Travel insurance for Japan and an Airalo eSIM are worth sorting before you fly.

City Guides for Okinawa

Detailed city guide: Okinawa (Naha)

Related guides: Okinawa travel guide · Things to do in Okinawa · Hokkaido vs Okinawa · Japan in August · Japan in September · Best time to visit Japan

See also: Where to stay in Okinawa · Best restaurants in Okinawa · Okinawa food guide · Day trips from Okinawa · Japan in July · Budget travel guide Japan

Frequently Asked Questions

When is the best time to visit Okinawa?
April to June and October to December are ideal — warm, clear water, and outside the peak crowds of Japanese summer school holidays (late July to August). Typhoon season runs July to September and can disrupt island-hopping; September is the peak typhoon month. For diving, visibility is best March to June. Winter (January–February) is mild at 15–20°C but too cool for swimming without a wetsuit.
Is Okinawa part of Japan?
Yes, Okinawa has been part of Japan since 1879, when the Ryukyu Kingdom was formally annexed. Before that it was an independent kingdom with its own language, religion, performing arts, and architecture — most of which survives as a distinct culture within Japan. The US military administered Okinawa until 1972 and retains significant bases there today, which contributes to a more internationally mixed character than most Japanese prefectures.
Do I need to go to the outer islands?
The main island (Okinawa Honto) has excellent beaches, the most historic sites, and the majority of tourist infrastructure. The outer islands — Kerama, Miyako, Ishigaki, Iriomote — have clearer water, better diving, fewer people, and a more distinctly tropical feel. If you have a week, a night or two on a Kerama island is easy to add from Naha. A separate 4–5 day trip to Ishigaki or Miyako accesses Japan's most Caribbean-like environment.
Can I get around Okinawa main island without a car?
Naha is walkable and has the Yui Rail monorail (21 stations, ¥230–¥370, as of 2026). Beyond Naha — north to Churaumi Aquarium, east to Katsuren or the Hamahiga Island causeway, or south to the war memorials — a rental car is significantly more convenient. Bus routes exist but are slow and infrequent. Rental cars from Naha Airport start around ¥4,000–¥6,000 per day.
What is Okinawan food like?
Okinawan cuisine (Ryukyu ryori) is distinct from mainland Japanese food — more use of pork (every part), bitter melon (goya), tofu prepared differently (Okinawa tofu is firmer and higher protein), seaweed (mozuku, harvested locally), and turmeric rice. The signature dish is champuru — a stir fry of goya, tofu, egg, and pork. Awamori (Ryukyuan rice spirit distilled from Thai long-grain rice) is the local drink, served over ice with water.

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