Every year in late May and early June, two of Malaysia's biggest cultural celebrations land almost back to back, and most of the country outside Sabah and Sarawak knows the headline but not the substance. Kaamatan traditions and Gawai Dayak traditions get filed under "Sabah and Sarawak's harvest festivals" on every school-holiday calendar, but the specifics — who Huminodun was, what a chapan basket is for, why tuak gets poured out in five separate rounds — rarely travel past the state border. Here is what actually happens, tradition by tradition, described the way the Kadazan-Dusun, Murut, Rungus, Iban, Bidayuh and Orang Ulu communities themselves explain it.
What Kaamatan and Gawai Dayak Actually Mark
Kaamatan is Sabah's harvest festival, celebrated on 30 and 31 May, a public holiday in Sabah and the federal territory of Labuan. It is led by the Kadazan-Dusun, Sabah's largest Bumiputera group, alongside the Murut, Rungus and other indigenous communities, and marks the close of the padi (rice) harvest season, according to the Sabah Tourism Board.
Gawai Dayak follows a few days later, on 1 and 2 June, a public holiday specific to Sarawak. It is observed by the Iban and Bidayuh, plus Orang Ulu groups such as the Kayan, Kenyah and Kelabit — communities collectively referred to as Dayak, per the Sarawak Tourism Board. In 2026, Sarawak has also gazetted 3 and 4 June as replacement holidays after Gawai's usual dates overlapped with Wesak Day and the Yang di-Pertuan Agong's birthday, stretching the break even longer this year.
Both festivals share the same root idea: gratitude for a good harvest, expressed through ritual, feasting, and — worth stating plainly rather than glossing over — the drinking of home-brewed rice wine as a formal part of hospitality, not casual partying. What differs is the specific custom each community has built around that gratitude.
Kaamatan Traditions Worth Knowing
The Huminodun origin myth
Kaamatan traces back to the legend of Huminodun, daughter of the creator god Kinoingan. According to Kadazan-Dusun belief, when the earliest humans faced famine, Huminodun sacrificed herself so her body could become food: her flesh and blood became rice, and other parts of her became coconut, maize, ginger and other crops that sustain the community to this day. Her spirit is said to have become Bambaazon, the rice spirit invoked at harvest time. It is a sacrifice story, not a metaphor Kadazan-Dusun communities take lightly — it is the reason the festival exists at all.
Unduk Ngadau, the harvest pageant
Unduk Ngadau, "maiden of the harvest," is the pageant held at the Kaamatan finale and run by the Kadazandusun Cultural Association (KDCA) since 1960 — the 2026 edition marks its 66th year. It is a direct tribute to Huminodun: judges assess contestants on cultural knowledge, poise, traditional costume and community values rather than physical appearance alone, with district-level winners advancing to the state final at KDCA's Hongkod Koisaan in Penampang.
Sugandoi, singing for the harvest
Long before it became a contest, Sugandoi (from monugandoi) was the practice of trading riddles, poems and songs of wit during the harvest, along with songs of praise and thanksgiving to Huminodun. That oral tradition is now a structured singing competition running from village level up to the state finale, giving new Kadazan-Dusun vocalists and composers a platform.
Sumazau dance and the Bobolian
Sumazau is the Kadazan-Dusun community's signature dance, its arm and hand movements said to echo an eagle spreading its wings over golden rice fields. Dancers typically perform in pairs, in traditional dress, to the beat of six gongs and a drum, expressing thanks for the harvest. Presiding over the ritual side of the festival is the Bobolian (or Bobohizan), a Kadazan-Dusun priestess who acts as intermediary between the community and the spirit world and leads the ceremonies tied to the rice cycle.
Gawai Dayak Traditions Worth Knowing
Muai Antu Rua, casting out the spirit of greed
On the evening of 31 May, longhouse residents perform Muai Antu Rua — literally, chasing away the spirit of greed and bad luck. Two men drag a chapan (winnowing basket) past each family's room along the longhouse, and every household throws unwanted items into it. The basket is then carried to the end of the longhouse and its contents tossed to the ground, clearing the way for the new harvest year.
Ngajat, the warrior and welcome dance
Ngajat is performed by both men and women, but the two versions read very differently. The male ngajat mimics the mannerisms of the hornbill, regarded as the king of birds, to project courage and strength; the female ngajat is softer and more restrained, built around precise, graceful turns. Dancers wear elaborate costume — feathered headdresses and ceremonial swords for men, pua kumbu (handwoven cloth) and beaded ngepan headdresses for women — accompanied by gongs and percussion.
Tuak and the five rounds of hospitality
Tuak, a rice wine, is brewed at least a month ahead of Gawai. When a guest arrives at the longhouse, it is served in a set sequence, each round carrying its own name and symbolism: ai tiki (a welcoming drink), ai aus (to quench thirst), ai basu (a "washing" drink), ai untong (a "profit" drink) and ai basa (a drink of respect). It is a ritualised form of hospitality with defined steps, not an open bar — and for Christian Dayak families, Gawai also involves a church thanksgiving service alongside the longhouse customs.
Ngabang, the Gawai open house
On 1 June, Dayak households open their doors to visitors under the custom known as Ngabang. Guests are served tuak as part of the welcome, a practice locally described as "nyibur temuai" — watering the guests. It sits alongside other open-house traditions marking Malaysia's festive calendar, from Hari Raya open houses to the community gatherings found in Melaka's Kristang celebrations, though Ngabang's rituals and drink rounds are specific to Dayak longhouse culture.
Kaamatan and Gawai Dayak are far from the only Bumiputera and community festivals that reward a closer look rather than a passing glance — much like how KL's own Hungry Ghost Festival getai season tends to be seen but rarely understood by people outside the community that keeps it going.
FAQ
When is Kaamatan celebrated in 2026?
Kaamatan falls on 30 and 31 May 2026, and is a public holiday in Sabah and Labuan. Celebrations actually build up throughout May, starting with a launch on 1 May in a chosen district before culminating in the state-level finale.
When is Gawai Dayak celebrated in 2026?
Gawai Dayak falls on 1 and 2 June 2026, a public holiday in Sarawak. Sarawak has additionally gazetted 3 and 4 June 2026 as replacement holidays because Gawai's dates coincided with Wesak Day and the Agong's birthday this year.
Who celebrates Kaamatan and who celebrates Gawai Dayak?
Kaamatan is celebrated primarily by the Kadazan-Dusun, Murut and Rungus communities of Sabah. Gawai Dayak is celebrated by the Iban and Bidayuh, along with Orang Ulu groups such as the Kayan, Kenyah and Kelabit of Sarawak, collectively referred to as Dayak.
What is Unduk Ngadau?
Unduk Ngadau is Kaamatan's harvest pageant, run by the Kadazandusun Cultural Association since 1960. It honours the legend of Huminodun and judges contestants on cultural knowledge, traditional costume and community values rather than physical appearance.
Is tuak central to Gawai Dayak, and what is it?
Tuak is a traditional rice wine brewed ahead of Gawai and served to guests in a set sequence of ritual rounds as part of longhouse hospitality. It is a factual, longstanding part of the custom — not something this article recommends or celebrates, simply a practice that helps explain how Gawai hospitality works.
