When is the Best Time for Whale Watching in Japan?
Jul 1, 2026
Japan's coastline stretches across nearly 30,000 kilometers, and the waters surrounding it host some of the Pacific's most spectacular whale populations. Between January and April, humpback whales migrate to the warm, clear waters around the Kerama Islands and Okinawa to breed and nurse their calves. In summer, sperm whales surface near the remote Ogasawara Islands, while orcas patrol the seas off Hokkaido.
What makes these sightings more than just a thrill is the conservation context. The Western North Pacific humpback whale population that breeds around Okinawa and Ogasawara remains classified as endangered, and every respectful whale watching trip supports the research and awareness that help protect them.
In this guide, I'll cover six whale watching regions from Okinawa in the south to Hokkaido in the north, with seasons, species, and how to get there for each. Let's get started.
Whale watching in Japan is an exhilarating experience, with the country's diverse marine life offering unique encounters throughout the year. The most anticipated spectacle is during the winter months, specifically from January to March when the humpback whales migrate to the warmer waters around the Kerama Islands and Okinawa's main island for breeding.
Their captivating water acrobatics and nurturing behaviors toward their calves make this period exceptionally special. As winter gives way to spring, the whale watching season doesn't end but welcomes a different giant; the elusive sperm whales make their presence known around the Ogasawara Islands, providing a thrilling experience for enthusiasts from March to April.
These months also offer the calmest weather conditions, enhancing visibility and increasing the likelihood of sightings during whale watching tours.
Best months: January to March (humpback whales, Okinawa and Kerama Islands), March to April (sperm whales, Ogasawara Islands), summer (pilot whales and dolphins).
Research tracking individual humpback whales between Okinawa and Ogasawara has identified 225 matched individuals across both breeding grounds, confirming that these two regions form a connected migration corridor for the Western North Pacific population.
However, the allure of whale watching in Japan extends beyond these majestic whales. The summer season ushers in the sociable pilot whales and playful pods of wild dolphins, including the energetic bottlenose dolphins, delighting tourists with their antics.
These sightings often occur during boat tours, where respectful distance is maintained to safeguard the creatures and their habitat. During summer tours, you may also spot sea turtles and flying fish depending on the region. For more on Japan's marine adventures, see our island guide.
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The six locations below span Japan's full coastline, each with different peak seasons, species, and access requirements. I've organized them roughly south to north so you can match your travel dates to the right region.
The Ogasawara Islands, often referred to as the Galapagos of the East, present a unique whale watching experience due to their remote location. Accessible only by a 24-hour ferry ride from Tokyo, these islands are a haven for a variety of marine life, including humpback whales and sperm whales. The more elusive pilot whales also appear here.
Best months: February to April Species: Humpback whales, sperm whales, pilot whales Getting there: 24-hour ferry from Tokyo (Takeshiba Pier), no flights available
The isolation has led to the evolution of a distinctive ecosystem, with clear, warm waters that offer perfect conditions for these marine giants to thrive. Between February and April, humpback whales are often seen breaching and tail-slapping, creating an unforgettable spectacle. The Ogasawara Islands also serve as a critical research area for scientists studying whales, contributing to the global understanding and conservation of these magnificent creatures.
Okinawa, Japan's southernmost prefecture, offers a tropical whale watching paradise, especially around the Kerama Islands and Zamami Island. The region is famous for its crystal-clear waters, making it ideal for observing humpback whales as they migrate to breed and calve during the winter months, particularly from January to March.
Best months: January to March Species: Humpback whales, bottlenose dolphins Getting there: Fly to Naha Airport (direct flights from Tokyo, Osaka, and other major cities), then join a tour from Naha or take a ferry to Zamami Island
These waters also host a variety of playful marine species, including bottlenose dolphins and wild dolphins, often seen riding the bow waves of boats. Okinawa's rich coral reefs and diverse marine life provide a vibrant backdrop for whale watching tours, making it a top destination for Okinawa tours and activities for enthusiasts and photographers alike. For more on the region, see our guide to the top things to do in Okinawa.
Kochi Prefecture, on Shikoku Island, is a hidden gem for whale watching in Japan. The area sees a variety of whale species, including sperm whales and humpback whales, which pass through its waters during their migration periods. Kochi offers a more secluded experience, away from the crowds, allowing for intimate encounters with these majestic beings.
Best months: April to October Species: Sperm whales, humpback whales, dolphins Getting there: Fly to Kochi Ryoma Airport, or take the JR Limited Express from Okayama (approximately 2.5 hours)
The warm Kuroshio Current running along the coast supports a wide range of marine life beyond whales, and dolphins are frequently spotted between whale sightings on Kochi tours.
Up north in Hokkaido, the Shiretoko Peninsula stands out with its pristine wilderness and dramatic landscapes. Recognized as a UNESCO World Heritage site, this location offers a unique whale watching season in the summer. Visitors here have the opportunity to see sperm whales, humpback whales, and even orcas in their natural habitat.
Best months: May to September Species: Sperm whales, humpback whales, orcas Getting there: Fly to Memanbetsu Airport, then drive or take a bus to Rausu (approximately 2 hours)
The area's nutrient-rich waters, resulting from seasonal sea ice melt, support a diverse array of marine life. Shiretoko is also renowned for its commitment to conservation, providing a protected environment where the harmony between marine and terrestrial life is profoundly evident. If you visit between late May and early June, the retreating sea ice creates prime conditions for both whale sightings and brown bear viewing along the coast. Plan your time in the region with our 5-day Hokkaido itinerary.
Just a short distance from the bustling city of Tokyo, Chiba Prefecture offers unexpected delights for whale watchers. The whale watching season here spans the colder months, from December to February when Pacific Ocean currents bring nutrients that attract a variety of marine creatures.
Best months: December to February Species: Humpback whales, sperm whales, dolphins Getting there: Train from Tokyo Station to Choshi or Katsuura (approximately 2 hours by JR Limited Express)
The Kujukuri Beach and the surrounding waters are prime spots to catch glimpses of both humpback whales and sperm whales, as well as schools of wild dolphins performing acrobatic displays. Additionally, the region's proximity to the capital makes it a convenient day trip. See our Chiba Prefecture travel guide for more on planning your visit.
The Izu Peninsula, with its hot springs, beautiful coastlines, and mountainous landscapes, is also home to a vibrant marine ecosystem. The deep, nutrient-rich waters around the peninsula are a magnet for marine life, including various species of whales and dolphins. From early spring to late autumn, particularly between September and November, the area sees migrating pods of humpback whales, sperm whales, and even the occasional Bryde's whale.
Best months: September to November Species: Humpback whales, sperm whales, Bryde's whales, dolphins Getting there: Take the JR Tokaido Shinkansen to Atami, then transfer to the Izu Kyuko Line (approximately 1.5 hours from Tokyo)
The local whale-watching tours are committed to responsible practices, ensuring minimal disturbance to the natural behaviors of these majestic marine mammals. With its proximity to Tokyo, the Izu Peninsula is a fantastic, easily accessible choice. Our Fuji-Hakone-Izu National Park guide covers more of the area's attractions.
Tour boats vary by location. In Okinawa, you'll typically board a mid-size vessel with 20 to 30 passengers. In Kochi, smaller boats of 10 to 15 passengers are more common, giving you a closer feel to the water. Before setting sail, guides often provide a brief on what to expect and rules to follow, such as maintaining a safe distance from the whales and avoiding attempts to swim with or touch them. These regulations are in place to protect sensitive marine life and ensure a respectful and sustainable eco-tourism practice.
Most whale watching tours in Japan run between 2 and 4 hours and accommodate groups of 10 to 30 passengers. Operators in popular areas like the Kerama Islands and Zamami run multiple departures per day during peak season, so booking a morning slot often gives you calmer seas and better visibility.
Japan follows International Whaling Commission (IWC) whale watching guidelines, which require boats to maintain minimum approach distances and limit the number of vessels near any single whale group at a time.
Whale watching tours, especially those in areas like the Kerama Islands, Ogasawara Islands, or off the coast of Okinawa's main island, offer more than just a glimpse of humpback whales or sperm whales. They are an immersive experience, where you can witness wild dolphins frolicking in the water or hear the haunting songs of whales echoing through the ocean.
Bottlenose dolphins, known for their curiosity and playfulness, are a common delight, often seen swimming alongside boats. Tourists are encouraged to bring cameras to capture these memorable moments but are also reminded to experience the spectacle through their senses, beyond the lens.
Conditions on the water differ significantly by season and location, so preparation matters. The tips below cover the most common questions first-time whale watchers ask.
Dress in layers. It gets chilly on the water even in summer, and during the winter months, warm, waterproof clothing is essential.
Take seasickness medication before you board. The ocean can be unpredictable, and even experienced sailors sometimes feel queasy. Stay hydrated throughout the trip.
Follow the guidelines provided by tour operators. Keep a safe distance from whales and dolphins, and never attempt to feed, touch, or swim with them.
Keep quiet when whales are nearby. They are sensitive to sound, and a calm environment gives you a better chance of hearing their vocalizations.
Bring a camera, but remember to watch with your eyes too. Some of the best moments happen in seconds.
Watch the horizon and listen for cues from your guide or fellow passengers. Whales and dolphins can surface when you least expect it.
Your guide will share valuable information about whale behaviors and keep you safe. Pay attention to their instructions throughout the trip.
