Onam & Kerala’s Festival Calendar

Kerala’s biggest festival is Onam, the state harvest festival, which falls in the August–September window; in 2026 the main day, Thiruvonam, is 26 August. But the calendar runs year-round — spectacular temple festivals, snake-boat races and the ritual dance-worship of the north. Almost all of these dates track the Malayalam calendar and shift each year, so use the months below as a guide and confirm the exact year’s date before you build a trip around one.

Onam

Onam is a ten-day harvest festival celebrating the mythical King Mahabali. In 2026 the season runs roughly 16–28 August, with the main day (Thiruvonam) on 26 August; it opens with the Athachamayam procession in Tripunithura around 16 August and is often bookended by the Pulikali “tiger dance” in Thrissur around 29 August. Look for the elaborate sadya feast served on a banana leaf, intricate pookalam flower carpets laid at doorways, and Vallam Kali snake-boat races on the backwaters.

Snake-boat races (Vallam Kali)

The snake-boat races are Kerala’s great sporting spectacle — hundred-foot chundan vallam crewed by scores of rowers, chanting in time. The most famous is the Nehru Trophy Boat Race on Punnamada Lake near Alappuzha, held on 22 August 2026; the ritual Aranmula boat race follows on 30 August 2026, and Champakulam is another on the circuit. Because the dates follow the Malayalam calendar, confirm them yearly before planning.

Thrissur Pooram

Thrissur Pooram is Kerala’s grandest temple festival, staged at the Vadakkunnathan temple in Thrissur — rows of caparisoned elephants under ceremonial parasols, thunderous panchavadyam percussion ensembles and a spectacular night of fireworks. It falls in the Malayalam month of Medam, generally late April to early May; confirm the exact year’s date locally, as it moves with the lunar-solar calendar.

Vishu & Attukal Pongala

Vishu, the astronomical Malayalam New Year, falls in mid-April, marked by the Vishukkani (an arrangement of auspicious objects seen first thing on waking) and Vishukkaineettam gifts of money. Attukal Pongala, at the Attukal temple in Thiruvananthapuram, is on 3 March 2026 — famous as one of the largest gatherings of women anywhere in the world, when hundreds of thousands cook a rice offering on roadside hearths across the city.

Theyyam & festivals across faiths

In North Malabar (Kannur and Kasaragod), Theyyam is a mesmerising form of ritual dance-worship in which performers become the deity, in towering costumes and elaborate face paint; its season runs roughly October to May. Kerala’s festivals also span faiths — the state’s large Christian and Muslim communities mark Christmas and Easter, Eid, and church festivals such as Chandanakudam — so there is nearly always something on somewhere.

Planning around the dates

Nearly every date here shifts from year to year with the Malayalam calendar, so treat the months as your anchor and confirm the specific day before you commit flights or hotels. Festival weeks — Onam above all — mean busier trains, fuller hotels and higher prices, but also the most colour and life you’ll see in Kerala. If you can travel flexibly, timing a trip to catch one is well worth it.