Sai Thong Beach
A scenic riverside beach on the Mekong, offering a peaceful natural escape in Nong Khai province.
Tours that include Sai Thong Beach
Skip-the-line entry, guided visits and day-tour combos around Sai Thong Beach.
Why go, and how to do it well
Sai Thong Beach is a natural riverside attraction situated along the Mekong River in the Sri Chiang Mai district of Nong Khai province, not far from Udon Thani. The beach draws visitors looking for a relaxed, unhurried experience away from the busier tourist circuits of northeastern Thailand, offering sandy stretches alongside the river with open views across to Laos on the opposite bank.
The atmosphere here is calm and informal, making it well suited to families, day-trippers, and travelers seeking a quieter connection with the Mekong landscape. The setting is largely natural, and the appeal lies in the scenery and the slow pace rather than organized facilities or commercial attractions. It functions as both a leisure spot and a local gathering place, reflecting the laid-back character of riverside life in this part of Isan.
Practically speaking, Sai Thong Beach is best visited during the cool season between November and February, when temperatures are more comfortable and the river levels are lower, revealing broader sandy areas along the bank. As no website or confirmed opening hours are available, visitors planning a trip are advised to check locally before traveling. The beach is best reached by private vehicle or motorbike, as public transport options in the area are limited. Light, breathable clothing is recommended year-round given the region's warm climate.
Written by Mac Kiley · Updated Oct 2026
Stay within reach of Sai Thong Beach
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Tours that include Sai Thong Beach
Skip-the-line entry, guided visits and day-tour combos around Sai Thong Beach.
Experience hints
Pair your visit. After Sai Thong Beach, round out your day in Udon Thani with contrasting stops nearby.
WJJ6+WFQ บ้าน หาดทราย อำเภอ ศรีเชียงใหม่ หนองคาย 43130, Thailand
Open in Google MapsTips for Visiting Beaches
Go Early for Empty Sand
Even the busiest beaches are nearly deserted before 9 AM. Sunrise walks on Kata, Chaweng, or Railay are magical — and you'll beat the heat for a morning swim.
Use Reef-Safe Sunscreen
Many Thai marine parks ban chemical sunscreens that damage coral. Bring reef-safe (mineral/zinc-based) sunscreen from home — it's harder to find and pricier in Thailand.
Explore Beyond the Main Strip
Every popular beach area has quieter alternatives nearby. Rent a scooter and ride 10 minutes from Patong to find Freedom Beach, or head to Phuket's northeast coast for nearly empty shores.
Sai Thong Beach: Frequently Asked Questions
Is Sai Thong Beach worth visiting?
Sai Thong Beach holds a 4.4★ rating from 64 Google reviews — a strong rating for beaches in Udon Thani.
When is the best time to visit Sai Thong Beach?
The best months to visit Udon Thani are December – February (Red Lotus Sea blooms Dec–Feb), with the most reliable weather. Crowds peak in December – January (lotus season weekends) — going early in the day usually means fewer people. Months to think twice about: March – May (peak heat).
Where is Sai Thong Beach located?
Sai Thong Beach is at WJJ6+WFQ บ้าน หาดทราย อำเภอ ศรีเชียงใหม่ หนองคาย 43130, Thailand, in Udon Thani. Getting around Udon Thani: Songthaews on numbered city routes (฿10–15); Grab and metered taxis in the city.
Also popular in Udon Thani

Cafe Viet
Vietnamese cooking in a Mekong border town, done properly, and closed by six so plan lunch not dinner.

Nong Prajak Park
Giant inflatable ducks on a city lake, and half of Udon Thani out jogging around it at dusk.

U-Tube Bar&Restaurant
A popular evening bar and restaurant in Udon Thani, open nightly from 5:30pm with a mid-range price point.

Maninakaspa
A highly regarded wellness spa in Udon Thani, open daily until 11pm for flexible scheduling.
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Siamchai Whitesand Beach
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