Published October 20, 2026 at 1:52 PM JST

In the seaside city of Uozu, seven towering lantern floats shaped like fishing boats are swung and spun in the first days of August, in thanks for the sea's gifts.

Quick answer: The Uozu Tatemon Festival is a summer night festival in Uozu, Toyama Prefecture, where seven boat-shaped floats called tatemon, each hung with about ninety lanterns, are pulled around the coastal town. It is typically held on the first Friday and Saturday of August, and the organizers set the exact times each year. Born as a prayer for good catches and safety at sea, it is a UNESCO-listed float festival and one of the most glowing sights of the Toyama summer.

A festival that lights up the coast

Few float festivals look as much like a living sculpture of light as the Uozu Tatemon Festival. Uozu is a small port city on the shore of Toyama Bay, in Toyama Prefecture on the Sea of Japan side of central Japan, and each August its streets are filled with tall, lantern-hung floats that glow against the night sky. The festival is known locally as the tatemon matsuri.

The festival is held around Suwa Shrine, which stands near the coast. According to the Toyama tourism pages, the occasion is a marine festival that prays for safety at sea and thanks the gods for a good catch of fish. The seven neighborhoods around the shrine each prepare one tatemon, so the sight of seven floats gathering together is the highlight of the evening.

Travel guides say the festival has a history of more than 300 years. It is designated a nationally important intangible folk cultural property, and in December 2016 it was inscribed as part of the UNESCO listing of Yama, Hoko, Yatai float festivals in Japan, along with 32 other festivals from around the country.

What a tatemon is

The word tatemon is said to come from a word meaning something offered before the gods, according to a Japanese festival guide. The idea is that the floats are offerings to the gods, and the tall tower of lanterns is a way of calling the deities of the sea.

A tatemon is not like most Japanese festival floats, because it has no wheels. Instead, according to the Toyama cultural heritage site, it is built on a sled-shaped base and dragged along the street. The base has the shape of a fishing boat, and the guide published for the festival says the frame is made of zelkova wood for the boat body and cedar for the structure that holds the lanterns. The Toyama pages add that the floats are tied together with rope only, with no nails, in a style inspired by the way fishers tie their nets.

Rising from the center is a central pillar of about 16 meters. More than ninety lanterns are hung from it in a triangular arrangement, so that the whole structure looks like the sail of a boat or a pyramid of light. At the top is an eight-sided ornament and an image of Ebisu, the god of fishing and good fortune, according to the Toyama tourism site. Each tatemon is reported to weigh about five tons.

Origins by the sea

The origin story ties Uozu to the Japanese mountains and the sea. According to a Japanese travel guide, the custom is said to come from the practice of offering gifts for a good catch to the main shrine of Suwa in Nagano. The current style is said to have taken shape around the Kyoho era in the early 1700s. At that time, nine tatemon are said to have existed, and today seven remain.

The festival date has changed over time. The same guide notes that in the Meiji era it was held in mid August and was moved in 1968 to avoid overlapping with the northern fishing season, and that since 2007 it has been held on the first Friday and Saturday of August. That shift is why the schedule today follows weekdays rather than a fixed calendar date.

The long relationship between the town and the sea gives the festival its feel. The lantern pillar placed high in the air is explained by the Toyama pages as a way to invite the gods of fishing.

What happens on the festival nights

The parade begins at night. According to a guide to the festival, the floats are pulled around the town from about 8:30 in the evening until 11 at night. Around eighty people, mostly young people in happi coats, pull each tatemon, and the call of the pullers, together with drums and flutes, fills the streets. The Toyama tourism site notes that the lanterns sway through the summer night, giving the festival its famous dreamlike glow.

The high point comes at Suwa Shrine. In turn, each tatemon is spun around in front of the shrine as an offering. The Toyama cultural heritage pages describe this as the festival's peak performance, one that is believed to have begun as a way of making the offerings look more impressive to the gods. The lantern lights draw circles of light in the night air as the pillar turns.

Because the festival takes place over two nights, there are two chances to see the floats. Visitors can choose either evening, and the shrine grounds are the place to be for the spinning offerings.

Fireworks over the water

The tatemon nights are part of a larger summer festival called the Jantokoi Uozu Festival, held over the first Friday, Saturday and Sunday of August. Among its events is a sea fireworks display on the Saturday. A recent festival report describes about 2,000 fireworks launched from barges off Uozu Port over roughly 40 minutes in the evening, and the tatemon on the coast can be seen in the same night, so the lantern floats and the fireworks share the same air.

The Toyama tourism page also mentions the fireworks as a related event on the second day. Because the barges are offshore, the fireworks open over the water, and viewers can watch from along the harbor. Since schedules and rain plans differ by year, it is wise to read the festival committee's announcement before traveling.

Visiting Uozu

Uozu is easy to reach from the Hokuriku Shinkansen line. According to a travel article, travelers can take the Shinkansen to Toyama Station, which takes about two and a half hours from Tokyo, and then ride the Ainokaze Toyama Railway for about 25 minutes to Uozu Station. From the station the shrine is a short taxi ride of about ten minutes, according to the festival guide, and the guide also mentions the local Dentetsu-Uozu station, about a 20-minute walk away, and a free shuttle bus. By car, the Uozu interchange of the Hokuriku Expressway is about fifteen minutes away.

On festival nights the area around the shrine and the coast is crowded. The best approach is to arrive in the early evening, find a place along the street away from the pull path, and give the pullers room. The floats are heavy and the crowd is close, so keep your belongings secure and follow the guidance of the festival staff. Comfortable shoes and light summer clothing are a good idea, as August nights in Toyama are warm.

Please check the official Uozu city or tourism association information for the latest schedule, shuttle arrangements and any traffic restrictions.

Around Uozu and the UNESCO listing

Uozu is famous for more than its festival. It is known for its mirages over Toyama Bay, which appear mostly in spring, and for the Uozu Buried Forest Museum, which displays the remains of an ancient forest about 2,000 years old, according to a travel magazine. The city is also known for the glowing firefly squid of Toyama Bay. Locally, a dish called bai-meshi, a rice dish cooked with a type of sea snail, is a fishermen's meal that is now served in the city's restaurants, according to a Japanese festival guide.

The UNESCO listing includes Uozu among 33 float festivals. UNESCO describes them as festivals in which people of all ages share the work of preparing floats and running the event, strengthening community bonds and prayers for peace and protection. In Uozu this takes a luminous form, with the work of seven neighborhoods creating one glowing night.

Frequently Asked Questions

When is the Uozu Tatemon Festival held?

It is typically held on the first Friday and Saturday of August, with the floats pulled in the evening and night. The organizers set the exact times each year, so check the Uozu city or tourism pages before you plan your trip.

How many tatemon take part?

Seven tatemon take part, one from each of the neighborhoods around Suwa Shrine. Each has a central pillar of about 16 meters hung with more than ninety lanterns, and each is pulled by roughly eighty people, according to the Toyama tourism pages.

Is there a special reason the floats are shaped like boats?

Yes. The festival is a prayer for safe sailing and good fishing, so the floats are made to resemble fishing boats offering their catch to the gods. The tall lantern pillar is said to invite the fishing gods, which is why it is placed so high.

Further reading: the Toyama tourism page on the festivals of Toyama, the Toyama cultural heritage page on the tatemon festival and the Tokyo Weekender article on Uozu.

Keep exploring: Takaoka Mikurumayama Festival: Seven Lacquered Floats on May Day; Johana Hikiyama Festival: Squeaking Wheels and Teahouse Songs; Kamezaki Shiohi Festival: Giant Floats Rolling Into the Tide; Hachinohe Sansha Taisai: Giant Handmade Floats of Aomori's Summer.