Water Festival (Bon Om Touk) — បុណ្យអុំទូក

The Water Festival is Cambodia's most spectacular celebration, marking the extraordinary annual reversal of the Tonle Sap river. For three days in November, the current of the Tonle Sap — which has been flowing northwest into the Great Lake during the monsoon — reverses direction and flows back toward the Mekong. This natural phenomenon has been celebrated for over 800 years.

The festival's heart is in Phnom Penh, where the Tonle Sap, Mekong, and Bassac rivers converge. The city's population swells from 2 million to nearly 5 million as Cambodians from across the country come to watch the races, cheer their province's team, and celebrate along the riverfront.

Over 400 colorful longboats, each crewed by 40–80 paddlers, race in pairs along a 1.7km stretch of the Tonle Sap river. Teams represent provinces, military units, and government ministries, and the competition is fierce. Each boat features a carved naga (serpent) prow and teams paddle in rhythmic unison to the beat of a drum.

Races run from early morning until late afternoon across all three days, with finals on the last day. The atmosphere along the riverfront is electric — families spread picnic blankets, vendors sell grilled meats and cold drinks, and the roar of crowds echoes across the water.

• Daytime: Boat races from 7am–4pm. The riverfront becomes a massive open-air festival with food stalls, games, and live music stages.
• Evening: Illuminated boat parades drift along the river. Each boat is decorated with thousands of lights forming elaborate designs — temples, nagas, and national symbols.
• Night: Massive fireworks displays over the river at 8–9pm. The reflection off the water creates a stunning spectacle.
• Moon worship: On the final night, Cambodians float small lotus-shaped boats with candles and offerings for the full moon (Sampeah Preah Khae).

• Book 2–3 months ahead. Riverside hotels sell out entirely. Even budget guesthouses fill up.
• Arrive a day early. Roads into Phnom Penh are gridlocked on the festival's first day.
• Stay near the river. Getting back to distant hotels through festival crowds is nearly impossible at night.
• Protect valuables. Pickpocketing increases in dense crowds. Use a money belt.
• Bring water and snacks. Vendor prices spike during the festival.
• Watch from higher ground. Rooftop bars like FCC and Raffles offer elevated views — reserve ahead.