Japan Okinawa Islands Guide 2025
Okinawa's Ryukyu archipelago stretches over 1,000km through Japan's southwestern ocean — a chain of 160 islands with some of Asia's clearest water, most pristine coral reefs, and a unique Ryukyuan culture that is distinctly its own. This guide covers the main island's highlights, the Kerama Islands' world-class diving, Miyako's legendary beaches, and the remote Yaeyama islands including jungle-covered Iriomote.
Plan Your Naha Okinawa Base
Naha is the gateway to all Okinawa island groups — from here you can reach Kerama by ferry and the outer islands by flight.
Okinawa Main Island: Naha, Shuri Castle & Churaumi Aquarium
The main island of Okinawa (沖縄本島) is the largest in the Ryukyu archipelago and home to the prefectural capital Naha — a vibrant city that blends Ryukyuan cultural heritage with modern Japanese urban life and a distinct subtropical atmosphere. As the gateway to all other Okinawan island groups (connected by flights and ferries), the main island deserves at least 2–3 days even for travelers planning to spend most of their time on outer islands.
Main Island Highlights
- • Kokusai Dori (国際通り): Naha's lively 1.6km international street — lined with restaurants, souvenir shops, and awamori (local spirits) distilleries
- • Shuri Castle (首里城): The restored palace of the Ryukyu Kingdom (14th–19th century); a UNESCO World Heritage site. Currently being rebuilt after a 2019 fire; partial access available
- • Makishi Public Market: Naha's covered fresh market with Okinawan produce — sea grapes (umibudo), bitter melon (goya), pig face, and coral-colored fish
- • Okinawa Churaumi Aquarium: One of the world's largest aquariums, housing whale sharks and manta rays in an enormous tank; located in Ocean Expo Park, northern Okinawa
- • Cape Manzamo: Dramatic coastal cliffs carved by waves into an elephant-trunk shape — an iconic Okinawan landscape
- • American Village (Mihama): A distinctly Okinawan shopping and dining district shaped by the long American military presence
Ryukyuan Cuisine to Try
- • Champuru: Stir-fry of tofu, vegetables, spam, and egg — the signature Okinawan dish
- • Okinawa soba: Thick wheat noodles in pork-based broth — entirely different from mainland soba
- • Taco rice: Taco meat on a bed of white rice — an American-Okinawan fusion classic
- • Jimami tofu: Peanut-based tofu — smooth, rich, and nothing like soy tofu
Getting Around Main Island
- • Yui Rail: Okinawa's only monorail — connects Naha Airport to Shuri (27 minutes)
- • Rental car: Essential for northern beaches and Churaumi — roads are good and signs have English
- • Bus: Comprehensive but slow — useful for budget travelers
- • Taxi: Reasonable rates within central Naha
Kerama Islands: Crystal Water, Whale Watching & World-Class Diving
The Kerama Islands (慶良間諸島) — a national park just 40km west of Naha — are renowned worldwide for what oceanographers call "Kerama Blue": exceptionally clear, warm turquoise water of remarkable visibility (30m+ in calm conditions) surrounding islands of intact coral reef. The Kerama chain comprises Zamami Island, Tokashiki Island, Aka Island, and a dozen smaller coral atolls. This is among the finest snorkeling and scuba diving destinations in all of Asia.
Zamami Island (座間味島)
The most developed of the Kerama islands for tourism, with good accommodation options, dive shops, and the famous Furuzamami Beach — one of Japan's finest white-sand beaches with immediate snorkeling access to coral gardens from the shore. From January to March, humpback whales pass through the channel between Zamami and Aka Islands, making whale watching by small boat a spectacular winter activity. Ferry from Naha's Tomari Port: 50 minutes (high-speed) or 2 hours (regular).
Tokashiki Island (渡嘉敷島)
Tokashiki is the largest Kerama island and offers slightly more variety — Aharen Beach on the west coast is wonderfully calm and shallow for families, while the east coast offers more challenging dive sites with sea turtles and reef sharks. Day trips from Naha are feasible, but staying overnight reveals the island at its most peaceful. Ferry from Naha Tomari Port: 35 minutes (high-speed).
Kerama Diving Highlights
The Kerama Islands' diving is exceptional: coral cover on many sites exceeds 70%, water temperatures range from 22°C (winter) to 29°C (summer), and visibility consistently reaches 20–30m. Common sightings include Hawksbill and Loggerhead sea turtles (year-round), manta rays (summer), reef sharks, moray eels, and the extraordinary soft coral forests of the deeper sites. Multiple dive schools cater to all levels including beginners.
Kerama Whale Watching Season
Humpback whales (zatori kujira) migrate through the Kerama channel from January to March each year — one of Japan's most dependable wildlife spectacles. Tour boats depart from both Zamami and Tokashiki harbors during peak season (late January to mid-March), with remarkably high sighting rates (90%+ on calm days). Cost: approximately ¥4,000–¥6,000 per person for a 2-hour tour.
Miyako Islands: Japan's Clearest Water and Sunayama Beach
The Miyako Islands (宮古諸島), centered on Miyakojima City, are famous for holding some of Japan's clearest ocean water — competing seriously with the Kerama Islands for visibility and coral quality. The main island of Miyakojima is connected by road to Irabu Island and Shimoji Island via the remarkable 3.5km Irabu Bridge (伊良部大橋), Japan's longest toll-free bridge and one of the most scenic drives in the country.
Miyakojima Highlights
- • Sunayama Beach: Natural rock arch on a pristine white beach — one of Japan's most photogenic coastal spots
- • Yonaha Maehama Beach: 7km of powder-white sand — considered one of Japan's finest beaches
- • Higashihennazaki Cape: Dramatic sea-cliff walkway along Miyakojima's eastern tip
- • Irabu Bridge crossing: Drive or cycle the 3.5km bridge at sunset — spectacular views
Irabu and Shimoji Islands
- • Toriike Pond: Twin tidal pools connected to the sea by underground channels — snorkeling paradise
- • Nanamata Sea Cave: Kayak into a sea cave system with bioluminescent plankton (seasonal)
- • Shimoji Airport: A civilian-used pilot training airport with only 2–3 flights daily — eerie and beautiful
Getting to Miyako Islands
Miyakojima Airport is served by ANA and JAL from Naha (35 minutes) and from Tokyo Haneda (2.5–3 hours direct, seasonal). Rental cars are strongly recommended on Miyakojima — the island's highlights are spread across the coastline and a car (or scooter) is the only practical way to reach all beaches and viewpoints. Miyakojima's flat terrain also makes it excellent for cycling.
Miyako cuisine centers on local specialties including Miyako soba (narrower noodles than Okinawa soba, served with soft pork), mozuku seaweed (a local variety cultivated in large volumes), and fresh reef fish prepared in Okinawan style with turmeric and awamori. The island has developed a small but excellent restaurant scene in central Hirara town.
Yaeyama Islands: Iriomote Jungle, Ishigaki & Remote Yonaguni
The Yaeyama Islands (八重山諸島) are the southernmost inhabited island group in Japan — closer to Taiwan (270km) than to Okinawa main island (430km). Centered on Ishigaki City, the Yaeyamas comprise Ishigaki Island, the jungle-covered Iriomote Island, the colonial-village-preserved Taketomi Island, and the legendary diving destination of Yonaguni Island at Japan's western extremity. This is Japan at its most tropical and remote.
Ishigaki Island — Yaeyama Hub
Ishigaki (石垣島) is the administrative and transport center of the Yaeyamas with the region's main airport. Kabira Bay on the northwest coast — with its emerald water and small islands — is the most photographed scene in the Yaeyamas (swimming is prohibited to protect the black pearl cultivation). Yonehara Beach offers fantastic snorkeling from shore. Ishigaki beef (Ishigaki-gyu) is the region's celebrated wagyu brand. Ferries to all Yaeyama islands depart from Ishigaki Port.
Iriomote Island — Japan's Jungle Interior
Iriomote (西表島) is 90% covered by UNESCO-designated subtropical rainforest — a place so wild that it supports a unique subspecies of wildcat (Iriomote cat, fewer than 100 remain). The Urauchi River snakes 39km into the jungle interior, navigable by tour boat with optional jungle trekking to Mariyudo and Kampire waterfalls. Mangrove kayaking, river snorkeling, and SUP tours are also available. Iriomote is a UNESCO Natural World Heritage site (as part of Amami-Okinawa). Ferry from Ishigaki: 40 minutes.
Taketomi Island — Preserved Ryukyuan Village
Taketomi (竹富島) is a tiny island (5.4 km²) preserved as a living museum of traditional Ryukyuan culture. Low, red-roofed coral-stone walls line sand paths through a village of traditional houses draped in bougainvillea. Water buffalo carts (carrying tourists through the lanes) are the defining image of Taketomi. The island bans new permanent construction to preserve its UNESCO candidate cultural landscape. Ferry from Ishigaki: just 10 minutes.
Yonaguni Island — Japan's Westernmost Point
Yonaguni (与那国島) is as far west as Japan goes — just 111km from Taiwan. Famous among divers worldwide for two things: hammer head sharks (schooling in groups of 100+ in winter currents off the north coast) and the Yonaguni Monument — a large stepped underwater rock formation that some researchers controversially claim is a man-made ancient structure. Whether natural or artificial, the diving at the Monument site is extraordinary. Flights from Ishigaki: 30 minutes (ANA).
Island Hopping Logistics: Flights, Ferries & Best Seasons
Planning a multi-island Okinawa itinerary requires understanding the transport links between island groups. The basic structure: fly into Naha (OKA) from mainland Japan, use Naha as a base for the Kerama day trips, then fly to Miyakojima or Ishigaki for the outer island groups.
Transport Between Island Groups
- • Naha → Kerama Islands: Ferry from Tomari Port — Tokashiki 35 min (high-speed) / Zamami 50 min (high-speed). Day trips possible; overnight recommended.
- • Naha → Miyakojima: ANA/JAL flights, 35 minutes. Or ferry (10 hours — overnight ferry is a budget option).
- • Naha → Ishigaki: ANA/JAL/Peach flights, 55 minutes. Most convenient connection for Yaeyamas.
- • Ishigaki → Iriomote: Ferry (Uehara port or Ohara port), 40–50 minutes. Day trips possible; 2+ nights recommended.
- • Ishigaki → Taketomi: Ferry, 10 minutes. Easy day trip.
- • Ishigaki → Yonaguni: ANA flights, 30 minutes. 2 nights minimum to see both dive sites.
Best Season: April–June
Water is already warm (24–27°C), rainy season hasn't started, typhoon risk is low, and tourist crowds are smaller than summer. Whale shark season peaks in March–April near Iriomote. Cherry blossoms bloom on Okinawa in late January — Japan's earliest.
Typhoon Season: August–October
Okinawa is Japan's most typhoon-exposed region. August and September see the highest frequency. Typhoons can cancel all ferries and flights for 2–4 days. Buy travel insurance covering cancellations, and build buffer days into your itinerary if traveling in typhoon season.
Recommended Island Itineraries
- • 5 days: Naha (2 nights) + Zamami day trip + Ishigaki (2 nights) with Taketomi day trip
- • 8 days: Naha (1) → Zamami/Tokashiki (2) → Miyakojima (2) → Ishigaki (2) → Iriomote (1)
- • 12 days: All of the above plus Yonaguni (2) — the complete Okinawa island hop
Frequently Asked Questions
How many islands does Okinawa Prefecture have?▼
What is the best island in Okinawa for snorkeling beginners?▼
Is Iriomote Island difficult to visit?▼
Can I visit the Okinawa islands on a Japan Rail Pass?▼
What is Okinawan food and how is it different from mainland Japanese food?▼
Book Your Naha Base for Island Hopping
Naha connects you to the Kerama Islands by ferry and the outer islands by flight — make it your Okinawa headquarters.