Ok Phansa 2026: End of Buddhist Lent & Illuminated Boat Processions

Ok Phansa marks the end of the three-month Buddhist Lent (Khao Phansa), when monks conclude their rainy-season retreat and are once again free to travel. It falls on the full moon of the eleventh lunar month — October 6 in 2026 — and is celebrated with processions, merit-making, and illuminated boat festivals along Thailand’s rivers.

The most spectacular celebrations happen along the Mekong in Nong Khai and Nakhon Phanom, where elaborately decorated illuminated boats (Lai Ruea Fai) are floated on the river after dark. Nakhon Phanom’s boat procession is the largest, with dozens of boats stretching hundreds of metres, each covered in thousands of candles and lights. The reflection on the Mekong creates a mesmerising double image.

This is also the night of the famous Naga Fireballs — mysterious glowing orbs that rise from the Mekong near Phon Phisai in Nong Khai province. Whether you believe the phenomenon is supernatural or natural, combining the illuminated boat procession with the fireball watching makes for an unforgettable Isan evening.

Practical tips: Ok Phansa is a public holiday. Alcohol sales are banned for the day (though enforcement varies at tourist-area restaurants). Temples nationwide hold morning alms-giving ceremonies — Thais wear white and present new robes to monks (Thod Kathin). If you’re in Bangkok, Wat Arun and Wat Pho hold particularly atmospheric ceremonies at dawn.