Every year, at the end of Buddhist Lent, balls of light are reported above the Mekong in Nong Khai province. The phenomenon, called the Naga fireballs, draws Thai visitors and a few foreigners.
This year the end of Lent falls on 26 October, and Rattanawapi district has prepared a three-day programme from 24 to 26 October.
The phenomenon
The fireballs are described as points of light rising from the river surface, silently, before disappearing. Locals see a manifestation of the Naga, a mythological water creature.
Scientists suggest natural explanations linked to gas or light phenomena. The debate remains open, and the mystery is part of the appeal.
The date
The end of Buddhist Lent, or Ok Phansa, marks the end of the monks’ retreat during the rainy season. It falls on 26 October this year. Celebrations last several days, with ceremonies and local festivals.
The Rattanawapi programme
The district published a detailed programme. On 24 October, an alms-giving ceremony is planned at seven, followed by a traditional boat race at ten, an aerobics display at four and student performances at seven.
On 25 October, the day starts with a local produce market, then a Naga tribute ceremony at 18:29, the official opening at 19:00 with more than a thousand dancers, and a charity concert at 20:30.
On 26 October, local produce stalls are open all day, and a display of illuminated boats is planned at 18:00.
Where to go
The Mekong banks in Rattanawapi district are the busiest viewing points. Visitors settle early to find a spot. Other districts also organise events, with a more local crowd.
How to get there
Nong Khai is reached by train from Bangkok, with overnight services, or by air via Udon Thani, an hour away.
Rattanawapi district is about an hour from Nong Khai town, and a vehicle is needed.
Where to stay
Accommodation in Nong Khai is limited and fills up at this time. Book ahead, or stay in Udon Thani. Some visitors sleep in villages, but the offer is restricted.
Precautions
The crowd is dense on the evening of 26 October, so arrive early. Roads may be closed and parking is difficult.
Respect ceremonies, do not disturb worshippers and avoid noisy behaviour.
Weather
Late October marks the transition between the rainy and cool seasons. Evenings can be cool, so bring a warm layer.
FAQ
Are the fireballs guaranteed?
No. Locals come to watch traditionally, and sightings vary.
Is there a fee?
Access to the banks is free, but some events or seats may be charged.
With children?
Yes, but the crowd and noise require care.
How many days?
Two nights allow you to follow the celebrations.
What to do in Nong Khai?
The market, the sculpture park and the Mekong banks deserve a day.
Sources and references
- Thairath — Nong Khai prepares for visitors watching the Naga fireballs 2026 (22 October 2026)
- Der Farang — 800 drones illuminate the Mekong, Nakhon Phanom
To go further
Mr Schaka’s guidebook, Isan – The Practical Guide, covers the essentials: transport, neighbourhoods, addresses, food, etiquette and safety, updated for 2026–2027.
