Obon Festival in Japan: Meaning, Dates and Bon Odori

By Tim Yu, Founder & Editor · Published 4 June 2026 · Updated 4 November 2026

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Obon (お盆, also called Bon) is Japan’s Buddhist festival for honouring the spirits of the ancestors, woven together with older Japanese ancestor rites: families return home, visit the family graves, and in popular belief welcome the dead back for a few days before sending them off with fires, dances, and floating lanterns. Its date depends on the calendar.

The rite centres on the 15th of the seventh month, and Shogakukan’s Digital Daijisen dictionary notes that today some regions keep it by the old lunar calendar and others a month late, around 15 August, so it falls in mid-July in some places and mid-August in others. Its Buddhist root is the Yulanpen (Ullambana) Sutra, a scripture traditionally ascribed to the translator Dharmarakṣa, in which the disciple Mulian (Japanese Mokuren) sees his dead mother among the hungry ghosts and is told to make offerings to the monks on the fifteenth day of the seventh month. Jōdo Shinshū frames the festival differently: Senshin Buddhist Temple, of the Hongwanji-ha, writes that in Jōdo Shinshū Obon is called Kangi-e, or “The Gathering of joy,” and that “we do not welcome, entertain, and see off the souls of our ancestors at Obon.”

Its mood is reunion and gratitude more than mourning.

What is the Obon festival and what happens during it?

Obon is the Japanese version of Ullambana, a festival kept across much of East Asia for the spirits of the dead. Encyclopaedia Britannica, describing the related Chinese “Hungry Ghost Festival,” notes that in Japan “the festival is called Obon, a shortened form of Urabon, which some scholars think is a translation of Ullambana” — the Sanskrit name behind the Buddhist scripture that gives the festival its founding story. During Obon, Britannica adds, “colorful lanterns are lit to welcome the ghosts back to earth,” and the Bon dance is central.

The heart of Obon is simple and human: the dead are thought to return briefly to visit the living, so the living make them welcome. Families clean the family grave, set out offerings, light a small fire to guide the spirits home, gather to dance, and at the end light farewell fires and float lanterns to see the spirits safely back. (Unfamiliar terms are gathered in the glossary.)

The origin: Mokuren and his mother

The Buddhist root of Obon lies in the Ullambana Sutra (Chinese Yulanpen) and the story of one of the Buddha’s great disciples, Maudgalyayana — known in Japan as Mokuren. The story is widely told in the Mahayana world and is the same one that anchors the Chinese Hungry Ghost Festival.

In the tale, Mokuren gains supernatural sight and uses it to look for his deceased mother — only to find that she has been reborn into the realm of hungry ghosts (preta), where she suffers from unrelievable hunger and thirst. Distraught, he goes to the Buddha and asks how he can help her. As Britannica summarises the teaching, the disciple learns that to rescue a suffering relative “the whole sangha … would need to come together”; the Buddha advises him to make offerings to the assembly of monks at the close of their summer rains retreat. Mokuren does so, and his mother is released from her suffering.

Two things in that story shaped everything that follows. The first is the idea of transferring merit to the dead — that the living, through generosity to the monastic community, can ease the lot of departed loved ones. This is why Obon is bound up with offerings, temple visits, and care for the ancestors, and it connects to wider Buddhist questions about what happens after death and the rites Buddhists hold for the dead (see Buddhist funerals). The second is the dance of joy. The sutra itself says only that Mokuren and the assembly rejoiced, and that his mother was freed that same day; the dance belongs to the Japanese telling of the story, in which, as Britannica puts it, “the monk joyfully danced” when she was released. From that dance, by tradition, comes the Bon Odori, the communal dance still held every Obon. Japanese encyclopaedias tie the dance’s growth to the nembutsu odori, the dances of chanting holy men who traced their practice to Kūya and Ippen, which local communities took up for their own ancestors from the late Middle Ages.

A note on the name

It is worth being honest that the etymology of ullambana is not settled. The traditional gloss treats it as a Sanskrit word meaning roughly “hanging upside down,” a vivid image of the torments of the lower realms. But the Japanese scholar Hikata Ryūshō, writing in 1964, pointed out that the Yulanpen Sutra itself never speaks of hanging upside down, that the gloss goes back only to Xuanying’s seventh-century glossary, and argued that the underlying word is ullumpana, “rescue” — in which case the “hanging upside-down” explanation is a later gloss. Japanese dictionaries record other theories too, among them a derivation from the Iranian urvan, “soul.” Either way, the sense of the festival — lifting the dead out of suffering — is the same.

When is Obon?

Obon does not fall on a single fixed date, and this trips up many first-time visitors. Traditionally it was kept on the 15th day of the 7th month of the lunar calendar. When Japan adopted the Gregorian calendar in 1873, early in the Meiji era, different regions adapted differently, and three patterns settled in:

• Hachigatsu Bon (“Bon in August”), around 15 August — the most common, observed across most of Japan.
• Shichigatsu Bon (“Bon in July”), around 15 July — kept in Tokyo and some other areas.
• The old lunar reckoning — still followed in places such as Okinawa, where the date shifts each year and can fall as late as September: the Okinawa Convention & Visitors Bureau gives 4–6 September for 2025 and 25–27 August for 2026.

The reasons varied from place to place. Kyoto City’s history pages say Kyoto holds the rite a month late, in August, roughly matching the old seventh month, because changing it at will would trouble the ancestors. Local farming calendars could matter too: a Nishi-Tokyo City library answer explains that Tanashi, now part of that city, set its Bon at 30 July to 1 August, the time when farm families busy with silkworms could finally rest. The festival itself runs about three days, though the exact start varies by region. If you want the precise dates for a given year and place, it is best to check a current Japanese calendar rather than assume.

Although the focus of this page is Japan, it helps to see Obon as one branch of a wider East Asian observance. The same Ullambana story underlies the Chinese Hungry Ghost Festival (also called the Yulanpen or Zhongyuan festival), kept on the 15th day of the 7th lunar month — a reminder of how teachings and customs travelled along the routes by which Buddhism spread (see the history of Buddhism). Obon sits within Japan’s own ritual year alongside other observances; for the broader picture, see Buddhist festivals around the world.

How Obon began in Japan

Obon is not a purely imported festival. Most accounts describe it as a fusion: the Buddhist Ullambana rite arriving from the continent and merging with an older native Japanese practice of welcoming the spirits of ancestors home — a custom said to predate Buddhism’s arrival in Japan. This blending is part of why Obon feels less like doctrine and more like deep family tradition.

As for when it took hold, the records are old and a little imprecise, so it is worth flagging rather than overstating. Japan’s oldest official chronicle, the Nihon Shoki, records that from 606, in the reign of Empress Suiko (592–628), every temple held a Buddhist feast on the eighth day of the fourth month and the fifteenth of the seventh, and it records an Urabon-e in 657, the entry Yamakawa’s dictionary of Japanese history treats as the rite’s first appearance. From 733, the Nihon Kokugo Daijiten notes, it was a regular Buddhist rite at the imperial court. What is clear is that it began as a court and temple observance and only gradually, through long blending with native beliefs and customs, became the popular, nationwide festival it is today.

The customs of Obon

Obon’s practices vary by region and family, but most weave together the same threads: returning home, honouring the grave, welcoming the spirits, dancing, and seeing the spirits off.

Coming home and tending the graves

Obon is one of the great homecoming seasons in Japan, when many people travel back to their family hometowns. A central act is visiting the family grave (ohaka) to clean it, offer flowers, and pay respects. At home, families may prepare a small altar or set out offerings of food and seasonal fruit for the returning spirits.

Welcoming fires and farewell fires

To guide the spirits, families light small welcoming fires (mukaebi) at the entrance to the home at the start of Obon — by the August reckoning, on the evening of the 13th. At the festival’s close — the evening of the 16th — they light farewell fires (okuribi) to send the spirits back. The best known of these is Kyoto’s Gozan no Okuribi, often called the Daimonji: five enormous bonfires set ablaze on the mountains ringing the city on the night of 16 August. Kyoto City’s own history pages explain that families in Kyoto welcome the ancestral spirits home once August begins, and that the fires of the 16th send those spirits back again to the other world. Two of the five fires form giant Chinese characters reading 大 (dai, “great”) — the famous one on Daimonji-yama and the Hidari (“left”) Daimonji north of Kinkaku-ji — one more spells 妙法 (myō-hō, “wondrous Dharma,” a reference to the Buddha’s teaching), its two characters lit on the West and East Hills of Matsugasaki, and the remaining two are shaped as a boat (funagata) and a torii gate. Each of the five is registered as an intangible folk cultural property of Kyoto City.

Floating lanterns (toro nagashi)

In many places the spirits are sent off on water. In toro nagashi, people set paper lanterns afloat on a river, lake, or the sea, each small light carrying a spirit on its way back to the other world. The image — hundreds of glowing lanterns drifting on dark water at the end of summer — is one of the most quietly beautiful in the Japanese year, and it echoes the lanterns lit to welcome the spirits in at the start.

The Bon dance (Bon Odori)

The most public and joyful side of Obon is the Bon Odori. On summer evenings, in temple grounds, shrine courtyards, parks, and town squares, people gather to dance in a circle around a raised wooden platform (yagura) where drummers and singers perform. The steps are simple, repeated, and easy to join; the styles differ from region to region, each town often keeping its own tune and movements. Because the dance descends, by tradition, from Mokuren’s dance of joy, its spirit is gladness — a community celebrating the return of its ancestors rather than grieving their loss.

What Obon is really about

For all its fires and lanterns, Obon is at heart an act of remembrance and gratitude. It expresses something close to the centre of Buddhist ethics: that we did not arrive here alone, that we are held up by those who came before, and that we owe them care. The festival turns the abstract idea of the dependence of all things into something a family can do together — sweeping a gravestone, lighting a fire at the door, dancing in a circle in the warm dark.

It also says something gentle about death itself. Obon does not pretend the dead are not gone; the whole shape of the festival is a welcome and then a leave-taking, a brief reunion and then a sending-off. But it treats that parting without dread, even with tenderness and a kind of joy. For a tradition that asks us to look death squarely in the face, Obon is a remarkably warm way of doing so — less a festival of fear than a yearly homecoming for the whole family, the living and the dead alike. (For the larger story it belongs to, see the history of Buddhism and the wider calendar of Buddhist festivals.)