December is one of the best months to visit Chiang Mai, offering cool, dry, and sunny weather. Average temperatures range from 21°C to 30°C during the day, with low humidity and gentle breezes. It’s perfect for outdoor sightseeing, hiking, and enjoying the city’s festive atmosphere. Rainfall is minimal, and skies are often crystal clear, making it an excellent time for photography and mountain trips. However, December is part of the high tourist season, so attractions can be crowded, and hotel prices are at their peak. Planning and booking early is essential to secure good deals and avoid last-minute disappointments.In this article, we will take you through December  in Chiang Mai. From weather to top activities, events, and festivals. You will also learn the pros and cons of visiting in December, and get travel tips to make the most of your trip.

Overview of December Weather in Chiang Mai

December brings Chiang Mai’s most comfortable weather of the year. Days are warm and sunny, while evenings are pleasantly cool. Northern Chiang Mia enjoys crisp, fresh air and low humidity. Southern and coastal regions remain warm with occasional light showers, but Chiang Mai stays mostly dry, making it ideal for active sightseeing.

Average Temperature (Day/Night)

Daytime temperatures range from 25°C to 30°C, while nights can drop to 10–15°C in the city and even lower in mountainous. Layered clothing is recommended for varying day and night temperatures.

Rainfall Levels

Rainfall is at its lowest in December, with occasional short showers. Chiang Mai typically sees under 20 mm of rain this month, rarely affecting outdoor plans. Northern Chiang Mai is drier than the southern regions, which may still receive light evening rain.

Humidity and Wind Conditions 

December is the driest month, with humidity around 60%. Clear skies dominate, and there are 8–9 hours of sunshine daily. Gentle breezes make the cool mornings and evenings especially pleasant. These conditions are ideal for trekking, cycling, and open-air sightseeing without discomfort.

Comparison to Other Months 

Compared to November, December is cooler and even drier, with peak tourist activity. It offers better visibility for mountain views than in wetter months like September or October. While January is similarly cool, December offers more festive events, making it a particularly lively time to visit Chiang Mai.

Is December a Good Time to Visit Chiang Mai?

Yes, December is one of the best months to visit Chiang Mai because you will be able to enjoy the outdoor activities and most of the places will be open by this time. You will get to experience clear skies, less humidity and minimal rainfall especially in popular tourist attractions. Overall December is good for sightseeing and island hopping.

Pros and Cons of Visiting in December

Pros

• Chiang Mai has cool and dry weather in the month of December which makes it the best place to visit.
• There is less humidity in December  as compared to the other months which makes it an ideal time to visit.
• The weather is perfect if you want to engage in water activities like snorkelling, swimming or just relaxing on the beach.
• December is the month full of festivals. You can immerse in the cultural events that are celebrated in the city.

Cons

• Fares are higher during this period which can make the trip to Chiang Mai a little bit expensive.
• While the northern and central Chiang Mai are pleasant, the south might receive a fair amount of rainfall.
• Since the weather is amazing you will find more crowds in the region which can disrupt your travelling experience.
• The sea condition might not be good, t which can make boat and beach activities less enjoyable.

Best Activities to Enjoy in December

Chill at Sky Gallery Café with Sea Views

Sky Gallery café is a famous restaurant in Chiang Mai known for its sunset views. It is located on the Pratumnak Hill and offers a wide variety of cuisine. There is an option for both International and Thai cuisine. It is visited by both the locals and international tourists. The place is usually crowded during the evenings and weekends.

Try Parasailing and Banana Boat Rides

Chiang Mai  is well known for its beaches. Some of the popular beaches in Chiang Mai are Jomtien beach. Both these beaches offer an endless number of water activities. You get to do parasailing and go for banana boat rides. You will be charged around 600 Baht for Parasailing and 400 Baht for banana boat ride.

Enjoy Seafood at Local Beach Shacks

Chiang Mai will serve you the best seafood as it is near the coastal area. There are many options from the cozy small shacks to the upscale high end dining places. Some of the must try seafood in Chiang Mai would be grilled river prawn, and salt-grilled fish. You will also get the authentic taste of the seafood in the Chiang Mai market.

Take the Spa Experience in Chiang Mai

There is no better way to wind up in Chiang Mai than to take a traditional Thai Spa experience. It will leave you rejuvenated and refreshed. You will find Thai spa in almost all corners of Chiang Mai. The prices of Thai Spa may vary from one place to another.

Events & Festivals in December

King Bhumibol’s Birthday/Father’s Day

This national holiday honors the late King Bhumibol Adulyadej and is marked by parades, ceremonies, and a subdued atmosphere with restrictions on alcohol sales and loud music.

New Year’s Eve

Chiang Mai celebrates New Year’s Eve with fireworks and parties around the city center.

Yi Peng Lantern Festival

Although often associated with November, the Yi Peng festival, with its stunning lantern releases, can sometimes extend into early December, offering a magical experience.

Travel Tips for December in Chiang Mai

• Cover your shoulders and knees, and remove your shoes before entering the temples
• Consider an ethical elephant sanctuary and support organisations that prioritise the well being of elephants.
• Learn a few basic Thai phrases which will help you to enrich your experience
• Get around easily with Grab
• Enjoy the markets by visiting the Night Bazaar, Sunday Walking Street, and Warorot Market for unique finds and delicious food.

Conclusion

December is one of Chiang Mai’s most enjoyable months, offering perfect weather, a festive atmosphere, and countless outdoor activity opportunities. Cool mornings, sunny afternoons, and clear skies create ideal conditions for trekking, cycling, and temple visits. While it’s the peak tourist season, the city’s vibrant markets, cultural landmarks, and scenic mountain views make it worth the crowds. With good planning, early bookings, and a mix of popular and hidden experiences, you can fully embrace Chiang Mai’s charm during this special time of year. Whether for festive celebrations or nature adventures, December promises a memorable.

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