Ok Om Bok (Khmer Moon Worshipping Festival)

Ok Om Bok (also spelled Ok Ang Bok) is the Khmer Theravada Buddhist Moon Worshipping festival, celebrated on the full moon of the 10th lunar month (typically November) in the Khmer-heartland Mekong Delta provinces of Trà Vinh and Sóc Trăng.

It's one of the most distinctive cultural events in Vietnam and largely invisible to international tourism — most foreign visitors who attend stumble across it rather than plan for it.

When it happens

Year	Approximate dates
2026	~24 November
2027	~13 November
2028	~1 November

The full moon of the 10th lunar month is the central night; the festival typically runs 2–3 days around it.

The cultural meaning

In Khmer Theravada Buddhism, Ok Om Bok marks the end of the rainy season and gives thanks to the Moon (perceived as a deity in older Khmer cosmology) for protecting crops through the wet months. The full moon of the 10th lunar month is also significant in the broader Buddhist calendar.

The festival has three core components:

1. Moon worship — at home and at pagodas, families offer "ok om bok" (flattened young rice), bananas, coconut, sugar cane to the moon.
2. Boat racing (đua ghe ngo) — long, narrow racing canoes with 40–60 paddlers, drums, and ceremonial flags. The races are the public-facing highlight.
3. Floating lantern release — paper lanterns floated on rivers and ponds carrying offerings and prayers.

Where to see it

Trà Vinh

The province with the largest Khmer population in Vietnam hosts the official Ok Om Bok Festival with the biggest boat races on the Long Bình canal. The Tỉnh ủy Trà Vinh (provincial committee) organises with the local Khmer community.

See Trà Vinh province.

Sóc Trăng

Boat races at the Maspero river in Sóc Trăng city. The Khmer pagodas (Bat Pagoda, Clay Pagoda) hold ceremonies. Less officially branded than Trà Vinh but with deeper community involvement.

See Sóc Trăng province.

Smaller communities

Khmer pagodas in other delta provinces (Bạc Liêu, Kiên Giang, An Giang) hold smaller observances.

The boat racing

The "ghe ngo" racing canoes are the festival's signature. Each boat is:

• 25–30 metres long, made from a single tree trunk traditionally
• Painted in vivid Khmer designs — dragon heads at the prow, mythological figures along the hull
• Crewed by 50–60 men (women's races are increasingly held too)
• Powered by paddles in synchronisation with drumbeats from the stroke

Each Khmer pagoda traditionally owns and trains a boat. The annual races are a major source of pride for the sponsoring community.

The race itself is short — a few hundred metres — but intense; crowds line the canal banks; the atmosphere is loud, joyful, and deeply Khmer rather than Vietnamese.

How to attend

• From HCMC: 4–5 hour bus ride to Trà Vinh or Sóc Trăng.
• From Cần Thơ: 2 hours to Trà Vinh or Sóc Trăng — the more practical base if combining with a delta itinerary.
• Accommodation: book ahead. Local hotels fill with Vietnamese-Khmer families returning for the festival.
• Entry: free to public race-viewing.

Practicalities

• Atmosphere: respectful but festive. Families bring children; the boat races draw thousands.
• Photography: allowed and encouraged; the colourful boats are striking.
• Food: festival food stalls; try bánh tét cốm dẹp (Khmer-style sticky-rice cake) and chè kheng (Khmer dessert).
• Khmer language: many participants speak Khmer first, Vietnamese second. Vietnamese-only speakers may not be able to converse with older festival-goers.

What to wear

• Modest, comfortable. The pagoda ceremonies have the usual covered-shoulders-and-knees expectation.
• Sun protection — November in the Mekong is dry-season hot.

Combining with a Mekong itinerary

For travellers building a Mekong delta itinerary around Ok Om Bok:

• 3-day version: HCMC → Cần Thơ overnight → Trà Vinh or Sóc Trăng for the festival → back.
• 5-day version: HCMC → Bến Tre → Cần Thơ → Trà Vinh (Ok Om Bok) → Sóc Trăng → back.

See Mekong Delta hub.

Honest take

Ok Om Bok is the most distinctive Khmer cultural event in Vietnam — and almost entirely off the foreign tourist radar. For travellers in the south during November, or for anyone interested in the cultural depth of the Khmer-Vietnamese communities, it's a genuinely meaningful experience.

The boat races are loud, the food is good, the welcome is genuine, and the day in the Mekong sun feels markedly different from the standard Hoi-An-and-Halong-Bay Vietnamese tourist experience.

For broader Khmer cultural context, see Trà Vinh and Sóc Trăng.