When we talk about the weather in Thailand in December, we think of warm, dry weather with plenty of sunshine. December is the busiest month for tourists visiting Thailand, and you can enjoy the warm weather and beautiful scenery.

In December, you can expect the temperature in Thailand to be between 25°C to 30°C, making it a great time for traveling. Compared to other months, the weather in December is drier with less rain, allowing tourists to enjoy clear and pristine weather.

In popular tourist destinations such as Bangkok, Phuket, and Chiang Mai, you can explore temples, indulge in local food, go shopping, and participate in various activities. If you are at the beautiful beaches, enjoy clear waters and various water sports.

Although December is an ideal time for traveling in Thailand, it’s still recommended to put on sun protection and stay hydrated. Additionally, as it’s peak season for tourists, do book hotels and flights in advance to avoid inconvenience and unnecessary expenses.

In gist, the weather in Thailand in December is warm, dry, and sunny, making it a great time for tourists to relax and enjoy the beautiful scenery, food, and activities. If you're planning to visit Thailand in December, you can indulge in the wonderful experiences that the country has to offer.

Weather In 5 Regions Of Thailand In December

Thailand is a country with diverse climate conditions, and each region has its unique weather patterns.

In December, the weather in Thailand is typically warm, dry, and sunny, making it ideal for tourism and relaxation.

1. Northern Region of Thailand

Old City view in Chiang Mai

The weather in the Northern region of Thailand is generally cool, especially in mountainous areas. In December, the temperature in the Northern region is usually between 15°C to 25°C, which is perfect for tourism.

Below are the weather conditions in some cities in the Northern region of Thailand:

• Chiang Mai: Maximum temperature is around 28℃, minimum temperature is around 15℃, and there is less rainfall.
• Chiang Rai: Maximum temperature is around 27℃, minimum temperature is around 13℃, and there is less rainfall.
• Sukhothai: Maximum temperature is around 29℃, minimum temperature is around 16℃, and there is less rainfall.

2. Northeastern Region of Thailand

The climate in the Northeastern region of Thailand is generally dry, especially during the winter. In December, the temperature in this region is usually between 20°C to 30°C, which is ideal for tourism.

Below are the weather conditions in some cities in the Northeastern region of Thailand:

• Ubon Ratchathani: Maximum temperature is around 30℃, minimum temperature is around 17℃, and there is less rainfall.
• Khon Kaen: Maximum temperature is around 28℃, minimum temperature is around 16℃, and there is less rainfall.
• Nakhon Phanom: Maximum temperature is around 29℃, minimum temperature is around 17℃, and there is less rainfall.

3. Eastern Region of Thailand

Floating market in Pattaya

The climate in the Eastern region of Thailand is generally warm, especially along the coast. In December, the temperature in this region is usually between 25°C to 30°C, which is perfect for tourism.

Below are the weather conditions in some cities in the Eastern region of Thailand:

• Rayong: Maximum temperature is around 30℃, minimum temperature is around 23℃, and there is less rainfall.
• Pattaya: Maximum temperature is around 31℃, minimum temperature is around 23℃, and there is less rainfall.
• Ranong: Maximum temperature is around 30℃, minimum temperature is around 23℃, and there is less rainfall.

4. Central Region of Thailand

The weather in the central region of Thailand is generally warm, especially in urban areas. In December, temperatures in the central region usually range from 25°C to 30°C, making it an ideal destination.

Here are the weather conditions in several cities in the central region of Thailand:

• Bangkok: The highest temperature is around 31°C, the lowest temperature is around 23°C, and there is less rainfall.
• Ayutthaya: The highest temperature is around 30°C, the lowest temperature is around 23°C, and there is less rainfall compared to other cities.
• Phuket: The highest temperature is around 31°C, the lowest temperature is around 23°C, and there is less rainfall compared to other cities.

5. Southern Region of Thailand

Chaweng Beach at Koh Samui

The climate in the southern region of Thailand is generally humid, especially along the coast. In December, temperatures in the southern region typically range from 25°C to 30°C, making it an ideal destination for vacation.

Here are the weather conditions in several cities in the southern region of Thailand:

• Phuket: The highest temperature is around 31°C, the lowest temperature is around 23°C, and there is less rainfall compared to other cities.
• Koh Samui: The highest temperature is around 29°C, the lowest temperature is around 23°C, and there is less rainfall compared to other cities.
• Krabi: The highest temperature is around 31°C, the lowest temperature is around 23°C, and there is less rainfall.

Here’s a quick summary that shows the maximum and minimum temperatures and rainfall levels for December in the Northern, Northeastern, Eastern, Central, and Southern regions of Thailand.

What To Pack

So if you're planning to travel to Thailand in December, you should bring lightweight and breathable clothing as the weather is still generally hot and humid. Here are the top 5 cities and the what to pack for your trip.

1. Bangkok

As the bustling capital city of Thailand, Bangkok is typically hot, with temperatures ranging from 25 - 30°C in December.

Best to pack along:

• Short-sleeved shirts/t-shirts: To stay comfortable and cool on hot days.
• Shorts/skirts: Allow your legs to breathe and keep you cool on hot days.
• Sneakers/sandals: These lightweight shoes will let you to walk around the city comfortably.

You can check out our Bangkok travel guide for where to go and what to do in this weather.

2. Chiang Mai

Located in northern Thailand, Chiang Mai is a popular tourist destination, with temperatures ranging from 20 - 25°C in December.

Best to pack along:

• Long-sleeved shirts/t-shirts: Stay warm in the cool weather.
• Long pants/jeans: Protect your legs and keep you warm in the cool weather.
• Sneakers/sandals: These lightweight shoes will allow you to walk around the city comfortably.

Check out our Chiang Mai travel guide for where to go and what to do here.

3. Phuket

As a popular island destination in southern Thailand, Phuket has temperatures ranging from 25 - 30°C in December.

Best to pack along:

• Short-sleeved shirts/t-shirts: Feel comfortable and cool on hot days.
• Shorts/skirts: Allow your legs to breathe and keep you cool on hot days.
• Sneakers/sandals: These lightweight shoes will allow you to walk on the beach comfortably.

4. Phuket Province

Phuket Province is a popular tourist destination in southern Thailand with many interesting things to do here. The In December, the temperature in Phuket typically ranges between 25 - 30°C.

Best to pack along:

• Short-sleeved shirts/t-shirts: These will keep you comfortable and cool on hot days.
• Shorts/skirts: These will help you breathe and keep you cool on hot days.
• Sneakers/sandals: These types of footwear will allow you to walk around the city comfortably.

5. Ratchaburi

Damnoen Saduak Floating Market

Ratchaburi is a city in northeastern Thailand and a popular tourist destination. In December, the temperature in Ratchaburi is usually between 20 - 25°C.

Best to pack along:

• Long-sleeved shirts/t-shirts: Stay warm in relatively cool weather.
• Long pants/jeans: Protect your legs and keep you warm in relatively cool weather.
• Sneakers/sandals: These types of footwear will allow you to walk around the city comfortably.

Overall, regardless of where you go in Thailand, you should prepare lightweight and breathable clothing items. Short-sleeved shirts, shorts, and sandals are a good choice for hotter regions, while long-sleeved shirts, long pants, and sneakers are a good choice for cooler regions.

In addition to clothing, you should also bring sunglasses, hats, and sunscreen to protect yourself from the sun.

Things to Know When Traveling to Thailand in December

If you are planning to travel to Thailand in December, here are 5 things to be mindful of:

1. Pay attention to the weather

When traveling in Thailand, be mindful of the local weather conditions. Best to check the local weather forecast before traveling and choosing clothing items that are appropriate for the forecast

2. Respect local culture

Thailand is a country with a long history and culture. You must respect the local customs and traditions. For example, in temples and other places of worship, you should dress appropriately and avoid wearing revealing or inappropriate clothing. In public places, you should respect the local customs and be polite.

3. Be cautious with food safety

Thai food is world-renowned, but you must be cautious with food safety when enjoying local cuisine. Try to choose clean and hygienic restaurants and street food vendors, and avoid eating raw or undercooked food. Additionally, you should be careful with drinking water and choose bottled water or boiled water.

4. Pay attention to safety concerns

During your travels, you must pay attention to safety concerns. Avoid traveling alone, especially at night. In public places, you should take care of your belongings, such as your wallet, phone, and camera. When using taxi or motorcycle services, choose reputable providers and make sure your transportation is insured.

5. Be mindful of health concerns

Before your trip, consult with a healthcare professional to determine if you need any vaccines or medications. During your travels, you should be mindful of good health practices, such as washing your hands frequently, avoiding contact with animals, and avoiding drinking untreated water. If you become ill, seek medical care at a local hospital or clinic.

Conclusion

Congratulations! You now know everything you need to know about the weather in Thailand in December! Whether you're looking for a warm and sunny beach getaway or a cool mountain retreat, Thailand has something to offer for everyone.

With temperatures ranging from 25°C to 30°C and less rainfall compared to other months, December is the perfect time to explore the country's many attractions, including temples, local food, shopping, and various activities.

Remember to pack lightweight and breathable clothing, along with sunscreen and other sun protection. It's also important to respect the local culture, be cautious with food safety, pay attention to safety concerns, and be mindful of health concerns.

So what are you waiting for? Start planning your trip to Thailand in December now and experience the warm, dry, and sunny weather that awaits you! Check out the weather in Bangkok if you are planning to visit Bangkok one day!