Is December a good time to visit The Land of Smiles? Thailand December events include a rare procession of barges down Bangkok’s majestic Chao Phraya River. Plus: a sailing regatta, a night marathon, and more. As for weather, temperatures are mild and skies are clear.
Thailand December Weather
In terms of weather, December is the coolest month of the year in Thailand. But keep in mind that this is the tropics, and what is considered “cool” in Thailand would still be considered “hot” in more temperate climates.
While the average high in Bangkok in December is 31 degrees Celsius, or 88 degrees Fahrenheit, the average low is 21 degrees Celsius, or 70 degrees Fahrenheit.
In fact, Bangkok enjoys a daily average of nine hours of sunshine in December. Usually, there are about two rainy days. Expect an average of 10 millimeters of rainfall during the month.
As for the humidity, the average is a relatively comfortable 62%. And the average sea temperature is 28 degrees Celsius, or 82 degrees Fahrenheit.
Winter runs from mid-November to mid-March. For many tourists, it is the best time to visit Thailand. Therefore, winter is the peak tourist season in the Land of Smiles. As a result, hotel room bargains are harder to find.
Recommended: Top 10 Etiquette Tips for Travelers Visiting Thailand>>
Best Thailand Continuing Events
The following events will begin in November 2026 and continue into December 2026.Â
In This Post
Vijit Chao Phraya Light Festival – 9 November to 23 December 2026Â
chao-phraya-river-illuminated-with-light-installations
The Chao Phraya River illuminated with light installations in Bangkok. Photo Credit: Tourism Authority of Thailand.
The Vijit Chao Phraya Light Festival will transform Bangkok’s riverside into a dazzling spectacle of light and color. Iconic landmarks along the Chao Phraya River, including temples, bridges, and cultural sites, will be illuminated with artistic projections and installations.
Visitors can stroll through riverside promenades, enjoy live performances, and watch the river itself come alive with reflections of the vibrant displays.
This festival is designed to highlight Bangkok’s cultural heritage while adding a modern twist to the festive season. It provides a magical backdrop for evening walks, photography, and riverside dining, and serves as a prelude to the city’s New Year’s Eve celebrations.
Location: Chao Phraya River, Bangkok, Thailand.
River Kwai Bridge Week – 27 November to 7 December 2026
This event takes you back in time to World War II through the River Kwai Bridge build by Allied prisoners-of-war.
To clarify, the Kanchanaburi Bridge was the part of the Death Railway that spanned the River Kwai.
The annual River Kwai Bridge Week and Kanchanaburi Red Cross Fair features two nightly light-and-sound shows telling the stories of World War II.
And it honours the prisoners of war and Asian labourers who built the infamous Death Railway, the Bridge on the River Kwai, and the Hellfire Pass. The event is held at the same time as the Kanchanaburi Red Cross Fair. And there is shopping, entertainment, exhibitions of local products, and a mini motor show.
Location: River Kwai Bridge, Kanchanaburi province, Thailand.
Best Thailand December Events
Many events take place in Thailand in December include a flower festival, a jet ski competition, an outdoor rock concert, a marathon – the list goes on.
However, keep in mind that dates in Thailand often change. And sometimes events are cancelled at the last minute.
Therefore, you might want to check with tourism authorities before booking your hotel room. Better safe than sorry!
More events will be added during the month as new information becomes available.
The listing begins with three on-going events, which began in November, and continues chronologically through December.
King Rama IX Birthday – 5 December 2026
In most countries Father Day falls in June. One of the exceptions is Thailand, where Father’s Day falls in December.
In addition, Thailand is the only country in the world where Father’s Day is an official holiday.
That is because Father’s Day in Thailand falls on the birthday of Bhumibol Adulyadej (5 December 1927 – 13 October 2016), who was conferred with the title King Bhumibol the Great in 1987.
For this reason, Father’s Day is also called King’s Birthday. If the actual date falls on a Saturday or Sunday, it is observed on the following Monday.
Location: Nationwide.
Phuket King’s Cup Regatta – 5 to 12 December 2026
The Phuket King’s Cup Regatta is the largest sailing event of its type in Asia, attracting enthusiasts from around the world. And there will be dinghy classes and five days of racing.
 Location: Phuket, Thailand.
Constitution Day – 10 December 2026
On this day, Thailand transitioned from an absolute monarchy to a constitutional monarchy. Therefore, Thai’s express their gratitude to the king, who gave them the chance to take part in the governance of the country.Â
Constitution Day is fixed on 10 December each year. If it falls on a weekend, a substitute holiday is observed on the following weekday. Government offices, schools, and many businesses will close. The next time it will be substituted to Monday is 11 December 2028.
Location: Nationwide.
Chiang Mai Marathon – 10 December 2026
The annual Chiang Mai Marathon will take running enthusiasts along a scenic route full of natural spots, historic sites, traditional art, cultural relics, local customs, and colourful festivals.
The full marathon will follow a 42,199 kilometre course and begin at 3 am. The cut-off time is 10 am.
However, shorter events will commence at 4 am and 5 am. A 3 kilometre “smile and kids” run stats at 5.20 am.
Not only that, the route is flat, and the temperature is expected to range between 12 and 20 degrees Celsius.
Location: Chiang Mai, Thailand.
Red Cross Fair – 11 to 22 December 2026 (Pending)
The Red Cross Fair will feature stage performances, games with prizes. raffle draws, and countless booths vending food and products.
The fair runs daily in Lumpini Park, Bangkok’s green lung, from 11 am to 11pm. My advice is to go after dark, when the temps have moderated and live bands take to the stages! Â
Location: Lumpini Park, Bangkok, Thailand.
Jet Ski World Cup Championship – 16 to 20 December 2026
The WGP#1 World Series Final Round—better known as the Jet Ski World Cup—will be held at Jomtien Beach, Pattaya, in Chonburi, Thailand.
This prestigious event draws elite jet ski athletes from over 40 countries, competing across multiple categories including freestyle, endurance, and GP classes.Â
Location: Jomtien Beach, Pattaya, Chonburi, Thailand.
Full Moon Party – 24 and 31 December 2026
Full Moon Party at Haad Rin Sunris Beach on Koh Phangan, an island near Koh Samui. Photo Credit: Per Meistrup.
The Full Moon Party is held on the beach of Haad Rin every month on the night of the full moon.
DJs play a variety of musical styles including trance, dubstep, reggae, and techno. Jugglers, fire-eaters, and fireworks add drama to the all-night event.
Haad Rin is crescent shaped beach located on the island of Ko Pha Ngan. It can be reached by boat from Koh Samui, an island off the coast of Southern Thailand.
Koh Samui is 293 miles (471 kilometres) south of Bangkok. Because the drive takes nearly 10 hours, air travel is recommended,. The flight takes just over one hour.
Christmas – 25 December 2026
As a predominately Buddhist country, Thailand does not celebrate Christmas as an official holiday. However, unofficially, Christmas has become increasingly popular in recent years.
Nowhere is this more apparent than at the country’s upscale shopping malls and five star hotels. Expect lavish decorations and special menus.
Location: Nationwide.
Overcoat Music Festival – 2026 Date Pending
 Celebrate Thailand’s coolest winter music festival at the scenic Jolly Land Starlight Amphitheater in Khao Kho, Phetchabun.
Location: Jolly Land Starlight Ampitheatr – Khaem Son, Khao Kho, Petchaburi, Thailand.
Neon Countdown Music Festival – 2026 Date Pending
Be a part of the ultimate countdown festival at the Neon Countdown Music Festival, which will feature a host of domestic and international DJs.
Location: Wonder World Extreme Park, Bangkok, Thailand.
New Year’s – Eve – 31 December 2026
Across Thailand, New Year’s Eve is marked by lively countdown parties where people gather in public squares, temples, beaches, and shopping centers to welcome the coming year together.
As midnight approaches, major cities light up the sky with spectacular fireworks, often paired with dazzling music and light shows.
Entertainment plays a central role, with concerts featuring Thai and international artists, DJs, and cultural performances keeping the crowds energized.
Food is everywhere — street stalls, night markets, and hotels offer festive menus that add to the celebratory atmosphere.
Alongside the revelry, many Thais also embrace spiritual traditions by visiting temples on New Year’s Eve or New Year’s Day to make merit, pray, and receive blessings, blending modern festivities with deep cultural and religious practices.
Here’s a look at what will happen in various cities and provinces around the Land of Smiles, arranged alphabetically:
Bangkok
In Bangkok, New Year’s Eve 2026 will be centered around three major venues. ICONSIAM will host the flagship Amazing Thailand Countdown, featuring dazzling fireworks, synchronized drone shows, and concerts along the Chao Phraya River.
CentralWorld will stage one of Asia’s largest outdoor countdown parties, with giant LED screens, live music, and a vibrant street‑festival atmosphere.
One Bangkok, the city’s newest landmark development, will offer immersive stage productions and cultural showcases, blending modern design with traditional elements.
Together, these celebrations make Bangkok the focal point of Thailand’s nationwide festivities.
Chiang Mai
In Chiang Mai, the celebrations are infused with tradition. Tha Pae Gate becomes the heart of the festivities, where lantern releases light up the night sky, symbolizing new beginnings. Cultural performances, including traditional Lanna music and dance, add a distinctly northern flavor to the countdown, making it one of the most atmospheric places to welcome the New Year.
Hua Hin and Prachuap Khiri Khan
Along the Gulf of Thailand, Hua Hin and Prachuap Khiri Khan offer seaside fireworks displays that illuminate the beaches. These towns emphasize family‑friendly events, with live music, food stalls, and relaxed gatherings by the water, creating a more laid‑back but equally festive way to celebrate.
Khon Kaen and Nakhon Ratchasima
In northeastern Thailand, Khon Kaen and Nakhon Ratchasima host lively local countdowns. Town squares and public parks fill with residents enjoying live music, traditional dances, and community celebrations. These events highlight the warmth of Isaan culture, blending modern entertainment with regional traditions.
Koh Samui
On Koh Samui, the island atmosphere shapes the celebrations. Beach parties dominate, with DJs spinning late into the night, fire shows dazzling crowds, and fireworks bursting over the ocean. Resorts and clubs host special events, making Koh Samui a hotspot for travelers seeking a tropical New Year’s Eve experience.
Krabi
Krabi’s Ao Nang Beach becomes the center of festivities, where locals and tourists gather for countdown parties. Fire shows, live music, and fireworks over the Andaman Sea create a vibrant yet relaxed atmosphere, with the natural beauty of limestone cliffs and islands as a backdrop.
Pattaya
Pattaya is known for its energetic nightlife, and New Year’s Eve amplifies it. Bali Hai Pier hosts spectacular fireworks displays, while concerts and street parties spill across Walking Street and the beachfront. The city’s reputation for entertainment ensures a lively and international crowd.
Phuket
Phuket’s Patong Beach is the epicenter of its New Year’s Eve celebrations. Beach parties, resort galas, and fireworks over the water draw thousands of revelers. The island’s nightlife scene combines with cultural performances, offering both high‑energy parties and family‑friendly events.
Prachuap Khiri Khan
In Prachuap Khiri Khan, seaside fireworks and community gatherings create a festive yet intimate atmosphere. Families and visitors enjoy concerts, food stalls, and cultural showcases, making it a charming coastal destination for the holiday.
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I haven’t yet been to Thailand, but you’ve convinced me to plan for a December visit. All the festivals plus the history surrounding the River Kwai Bridge Week sound like an amazing itinerary.
I spent last Christmas in Thailand, and it’s great time to visit as the weather is a bit cooler than usual.
There are so many festivals to choose from! Which would you recommend to get the best insight into local culture?
Great question! I think the Balinese New Year, a.k.a. Nyepi or Silent Day, is a very unique experience. On this day, the entire island goes dark and quiet for 24 hours. Hotels are given a pass. They must turn off all external lights, and gets cannot leave the premises. But they organize activities such as meditation or movies. We ate dinner on the roof in the dark! (There were lights in the kitchen, where the food was prepared.) It was a very special experience. BTW, the date varies each year, but it is usually in the early spring.
You have me seriously thinking about Thailand in December (maybe even this year). I got excited about the flower festival but then I saw the jet ski competition. I’m an avid jet skier (but not competitive) so I would love to see that! But I’m a NYE baby so the full moon party this year looks like it would be really cool!
There is a Full Moon Party every month on the same island. I’ve never been, but I hear it’s lots of fun.
I would love to see the Regatta and many of the festivals. Is New Year’s celebration a big one? I know it’s a big deal in many Asian countries.
I think NYE is only a big thing if you go to a party or function. I can’t recall much happening in the streets. Maybe on Khaosan Road, which is popular with tourists.