Tet (Lunar New Year)
Tet Nguyen Dan — the Lunar New Year — is Vietnam's most important holiday and the one that reshapes the country most dramatically. It falls in January or February depending on the lunar calendar. In the weeks before Tet, markets fill with peach blossoms (north) and apricot flowers (south), kumquat trees, and mountains of decorative items. On New Year's Eve, fireworks light up Hoan Kiem Lake in Hanoi and the riverfront in Ho Chi Minh City.
For travelers, Tet is a complex time. The spectacle is real — lion dances, flower markets, decorated streets — but much of the country shuts down for a week or more as people return to their home villages. Restaurants close, transport is chaotic, and ATMs run out of cash. If you want to experience Tet, arrive a few days before and book accommodation well in advance. Avoid the peak travel days around the holiday itself unless you enjoy organized chaos.
Hung Kings Temple Festival
Held on the 10th day of the third lunar month (typically April), this national holiday commemorates the legendary Hung Kings, founders of the Vietnamese nation. The main ceremonies take place at the Hung Kings Temple complex in Phu Tho province, north of Hanoi, drawing hundreds of thousands of pilgrims. It's a major cultural event and an official public holiday.
Mid-Autumn Festival (Tet Trung Thu)
Celebrated on the 15th day of the eighth lunar month (September or October), this is particularly a children's festival. Towns fill with paper lanterns, lion dances, and mooncakes. Hoi An is one of the best places to see it — the lantern-lit ancient town at mid-autumn is genuinely beautiful.
Hoi An Lantern Festival
On the 14th of each lunar month, Hoi An dims its electric lights and the ancient town glows with silk lanterns hung along the streets and reflected in the Thu Bon River. This happens monthly, not just once a year, making it easy to time a visit.
Kate Festival
The Kate Festival is the most important religious ceremony of the Cham people, held at Cham towers (most notably the Po Klong Garai towers near Phan Rang) in late September or early October. It's a vivid display of music, dance, and religious ritual largely unknown to most tourists — worth seeking out if you're in the central coast region at the right time.