Weather in Thailand December is a topic of great interest for travelers and locals alike, as it plays a crucial role in shaping the country’s climate and tourism industry.
December is a transitional month, marking the end of the wet season and the beginning of the dry season in Thailand. The country’s unique geography and climate create diverse weather patterns, ranging from tropical temperatures to dry conditions in the north.
Weather Patterns in Thailand During December Explain the significance of atmospheric pressure in shaping the country’s climate during this period

Thailand’s climate in December is a complex interplay of various weather patterns, with significant variations across different regions. The country is located in the tropics, where the sun’s rays strike the Earth directly, resulting in high temperatures and high levels of humidity throughout the year. However, the country’s climate is also affected by the monsoon patterns, which bring heavy rainfall and strong winds to certain parts of the country.
Atmospheric pressure plays a crucial role in shaping Thailand’s climate during December. The country is affected by the Asian monsoon, which brings warm, moist air from the Indian Ocean and the South China Sea. This warm air is pushed towards the equator by the trade winds, resulting in high temperatures and high levels of humidity. The atmospheric pressure also plays a critical role in the formation of cyclones and typhoons, which can bring heavy rainfall and strong winds to the country.
The relationship between temperature fluctuations and monsoon patterns is closely linked. As the Asian monsoon approaches, the atmospheric pressure drops, resulting in a decrease in temperature. This drop in temperature causes the air to cool, leading to the formation of clouds and precipitation. On the other hand, when the monsoon weakens, the atmospheric pressure rises, resulting in a rise in temperature and a decrease in precipitation.
Regional Variations in Weather Patterns
Thailand’s weather patterns vary significantly across different regions, with some areas experiencing contrasting weather conditions.
In the northern region, which includes Chiang Mai and Chiang Rai, the weather in December is generally dry and cool, with average temperatures ranging from 15°C to 25°C. The region experiences a relatively dry climate, with low levels of precipitation during the month. In contrast, the southern region, which includes Phuket and Koh Samui, experiences a hot and humid climate, with average temperatures ranging from 25°C to 35°C.
Temperature Fluctuations and Monsoon Patterns
The temperature fluctuations in Thailand’s climate are closely linked to the monsoon patterns. As the warm, moist air from the Indian Ocean and the South China Sea approaches the country, the atmospheric pressure drops, resulting in a decrease in temperature. This drop in temperature causes the air to cool, leading to the formation of clouds and precipitation.
The relationship between temperature and precipitation is also closely linked. When the temperature drops, the air becomes cooler, leading to the formation of clouds and precipitation. Conversely, when the temperature rises, the air becomes warmer, leading to a decrease in precipitation.
Historical Climate Records
Thailand’s climate has been affected by various weather patterns throughout its history. The country has experienced several droughts and floods throughout the years, with climate records showing significant variations in temperature and precipitation.
According to historical climate records, the country experienced a severe drought in 1997, which affected the northern and northeastern regions. In contrast, the southern region experienced a devastating flood in 2006, which resulted in significant damage to crops and infrastructure.
Long-term Trends
Thailand’s climate is expected to continue experiencing various weather patterns, with long-term trends showing significant variations in temperature and precipitation. Climate models predict that the country will experience warmer temperatures in the coming decades, leading to increased precipitation and flooding.
The Asian Development Bank has predicted that the country will experience warmer temperatures by 2030, with an average rise of 1.5°C. This increase in temperature is expected to lead to increased humidity and precipitation, resulting in more frequent and severe floods.
Best Time to Visit Thailand in December: Avoiding Extreme Weather Conditions

If you’re planning a trip to Thailand in December, it’s essential to know the best time to visit specific tourist destinations to avoid extreme weather conditions. The country’s climate varies greatly depending on the region, but generally, December is a great time to explore Thailand’s cities and beaches.
Best Attractions in Bangkok, Chiang Mai, and Phuket for December Weather
Bangkok, Chiang Mai, and Phuket are popular tourist destinations in Thailand, and December is an excellent time to visit them. Bangkok’s temperature ranges from 24°C to 30°C (75°F to 86°F), making it ideal for sightseeing and exploring the city’s markets, temples, and museums. Chiang Mai’s temperature is slightly cooler, with averages ranging from 20°C to 28°C (68°F to 82°F), making it perfect for trekking and visiting ancient ruins. Phuket’s tropical climate means temperatures range from 25°C to 33°C (77°F to 91°F), making it perfect for beach activities and water sports.
Temperature and Humidity Levels in Major Cities
Here’s a table summarizing the temperature and humidity levels in major cities across Thailand in December:
| City | Temperature (°C/°F) | Humidity (%) | Average Rainfall (mm/in) |
| — | — | — | — |
| Bangkok | 24-30 (75-86) | 60-80 | 50-100 (2-4 in) |
| Chiang Mai | 20-28 (68-82) | 40-70 | 20-50 (1-2 in) |
| Phuket | 25-33 (77-91) | 60-90 | 100-200 (4-8 in) |
| Pattaya | 25-32 (77-90) | 60-90 | 100-200 (4-8 in) |
Comparing December Weather with Other Months
December is generally a dry month in Thailand, with average rainfall decreasing as the year progresses. However, it’s still a good idea to check the weather forecast before your trip. Comparing December with other months, Bangkok’s average rainfall in December is much lower than in April and May, which are usually the wettest months. Chiang Mai’s temperature in December is similar to January and February, but the humidity is slightly lower. Phuket’s temperature in December is similar to November and October, but the humidity is higher.
Thailand’s Monsoon and Its Impact on Weather
December marks the beginning of Thailand’s monsoon season, a crucial period that shapes the country’s climate and weather patterns. The monsoon brings significant changes to the country’s landscape, affecting various regions differently. Understanding the formation of the monsoon and its effects is essential to appreciate the complexities of Thailand’s climate.
The monsoon in Thailand is primarily driven by the wind patterns and ocean currents in the region. During December, the Intertropical Convergence Zone (ITCZ) shifts northward, bringing warmer and more humid air from the equatorial region. This warm air mass interacts with the mountain ranges in Southeast Asia, resulting in the formation of clouds and precipitation. The combination of wind patterns and ocean currents creates a low-pressure system over the Indian Ocean, which pushes the monsoon winds towards the Thai coast.
The monsoon plays a vital role in shaping Thailand’s climate, and its effects are evident throughout the country. One of the significant impacts of the monsoon is the seasonal flooding and drought patterns.
The Role of Ocean Currents and Wind Patterns
The Indian Ocean Dipole (IOD) and the El Niño-Southern Oscillation (ENSO) are two crucial atmospheric and oceanic phenomena that influence the monsoon patterns in Thailand. The IOD is characterized by a difference in sea surface temperatures between the western and eastern parts of the Indian Ocean. This difference affects the atmospheric pressure patterns, which in turn, influences the wind direction and speed.
The ENSO phenomenon affects the atmospheric pressure patterns in the Pacific Ocean, leading to variations in wind patterns and precipitation. During an El Niño event, the atmospheric pressure over the Pacific Ocean increases, leading to a decrease in wind speeds over Thailand, resulting in reduced rainfall.
- The IOD has a significant impact on the monsoon patterns in Thailand, with the negative phase (cooling in the western Indian Ocean) leading to a more active monsoon.
- The ENSO phenomenon also plays a crucial role in shaping the monsoon patterns, with the El Niño events leading to reduced rainfall and drought conditions in Thailand.
The monsoon’s impact on seasonal flooding and drought patterns is significant, with different regions experiencing different types of weather conditions.
Regions Susceptible to Monsoon-Related Weather Extremes
The monsoon’s effects on the environment and human activities vary across different regions in Thailand. Some areas are more prone to monsoon-related weather extremes, while others experience more stable weather conditions.
The regions most susceptible to monsoon-related weather extremes are:
| Region | Description |
|---|---|
| Northeast Thailand | Frequent flooding and heavy rainfall during the monsoon season due to its low-lying terrain and dense vegetation. |
| Central Thailand | Seasonal flooding due to heavy rainfall and high tides during the monsoon season. |
| North Thailand | Frequent light drizzles and occasional heavy downpours during the monsoon season due to its mountainous terrain. |
| Southern Thailand | Heavy rainfall and occasional flash floods during the monsoon season due to its coastal location and high humidity. |
Impact on Agriculture and Daily Life
The monsoon’s impact on agriculture and daily life in Thailand is significant, with many farmers relying on the monsoon rains for their crops. However, the unpredictability of the monsoon patterns poses challenges for farmers, leading to crop failures and economic losses. Furthermore, the monsoon’s impact on daily life includes occasional disruptions to transportation and commerce, as well as an increased risk of waterborne diseases due to flooding.
Thailand Weather in December – Activities and Precautions
December in Thailand is characterized by the continuation of the northeast monsoon, bringing rain showers and increased humidity to the country. While this weather pattern may seem unfavorable to some, it also presents opportunities for various outdoor activities, cultural events, and unique experiences that are worth exploring.
During this time, tourists can enjoy the lush green landscapes, vibrant festivals, and a range of recreational activities that cater to different interests and preferences. To make the most of your trip, it’s essential to plan ahead, take necessary precautions, and be prepared for the changing weather conditions.
Designing a Schedule for Tourists Visiting Thailand in December, Weather in thailand december
A well-planned itinerary can help you navigate the rainy season and make the most of your trip to Thailand. Here are some suggestions for designing a schedule:
* Research popular festivals and events: December is a great time to experience Thailand’s vibrant culture, with festivals like the Loy Krathong and the New Year’s Eve celebrations.
* Choose activities that don’t require a lot of outdoor time: Consider visiting museums, galleries, temples, and shopping malls, which are great alternatives to outdoor activities.
* Plan indoor activities for rainy days: Engage in water sports like snorkeling, diving, or even surfing, which are perfect for rainy days.
* Pack accordingly: Bring waterproof gear, including jackets, bags, and shoes, to ensure you’re prepared for the rain.
* Be flexible: Be prepared to adjust your plans if the weather doesn’t cooperate, and have a backup plan in place.
Safety Tips for Traveling During the Rainy Season
While the rainy season can be a convenient time to visit Thailand, it’s essential to take necessary precautions to ensure your safety.
* Check the weather forecast: Before heading out, check the weather forecast to avoid getting caught in a sudden downpour.
* Wear protective clothing: Bring waterproof clothing, including jackets, pants, and shoes, to keep you dry.
* Be cautious on roads and sidewalks: Watch out for slippery roads and uneven sidewalks, which can be hazardous during the rainy season.
* Avoid traveling during peak rain hours: Plan your itinerary to avoid traveling during the peak rain hours, usually in the late afternoon and early evening.
* Stay informed: Keep up-to-date with local news and weather reports to stay informed about any potential hazards or disruptions.
Advantages of Participating in Cultural Events and Festivals
December is a great time to experience Thailand’s rich culture and heritage, with a range of festivals and events that showcase the country’s traditions and customs.
* Experience the beauty of Loy Krathong: This ancient festival is a must-experience for anyone visiting Thailand in December.
* Enjoy the music and food: Participate in the various cultural festivals and events, which offer a range of delicious food and live music.
* Learn about Thai customs: Take part in the various cultural activities and workshops, which provide insight into Thai customs and traditions.
* Connect with locals: Participate in the festivals and events, which offer a unique opportunity to connect with locals and learn about their way of life.
* Capture memorable photos: The festivals and events in December offer a range of photo opportunities, from vibrant street performances to stunning traditional dance routines.
Unique Experiences to Enjoy in Thailand During December
December is a great time to enjoy unique experiences in Thailand, from snorkeling and diving to cooking classes and cultural workshops.
* Snorkeling and diving: With the rain washing away the sediment, the waters are clearer, making it an ideal time for snorkeling and diving.
* Cooking classes: Learn the art of traditional Thai cuisine with cooking classes, which take place in the comfort of a kitchen or cooking studio.
* Culture workshops: Participate in various cultural workshops, which offer insight into Thai customs, traditions, and way of life.
* Elephant sanctuaries: Visit elephant sanctuaries, which provide a unique opportunity to get up close and personal with these majestic animals.
* Yoga and wellness retreats: Treat yourself to a yoga and wellness retreat, which offers a range of exercises and activities to rejuvenate the body and soul.
Planning Your Trip to Thailand in December
With the northeast monsoon bringing rain showers and increased humidity to the country, it’s essential to plan ahead when traveling to Thailand in December.
* Choose the right destination: Consider visiting the southern provinces, which experience a more mellow rainy season.
* Pack accordingly: Bring waterproof gear, including jackets, bags, and shoes, to ensure you’re prepared for the rain.
* Plan indoor activities: Engage in water sports like snorkeling, diving, or even surfing, which are perfect for rainy days.
* Research festivals and events: December is a great time to experience Thailand’s vibrant culture, with festivals like the Loy Krathong and the New Year’s Eve celebrations.
* Stay flexible: Be prepared to adjust your plans if the weather doesn’t cooperate, and have a backup plan in place.
Thailand Weather – Historical Data: Understanding Trends in Weather Patterns
Historical climate data plays a crucial role in understanding the trends and patterns of weather in Thailand, a country with a diverse geography and a tropical climate. Analyzing past data allows us to identify patterns, predict future weather conditions, and make informed decisions about tourism and economic development.
The Thai Meteorological Department (TMD) has been collecting climate data for over 50 years, providing valuable insights into the country’s weather patterns. This data includes temperature, precipitation, sunshine hours, and other climate metrics.
Historical Climate Data: Temperature Trends
The table below displays the average temperature trends in Thailand for the past 30 years, based on data from the TMD.
| Year | Average Temperature (°C) | Average Precipitation (mm) | Sunshine Hours (hours/day) |
| — | — | — | — |
| 1993 | 24.5 | 170.4 | 9.3 |
| 1998 | 25.1 | 182.1 | 9.5 |
| 2003 | 24.8 | 173.9 | 9.2 |
| 2008 | 25.3 | 194.5 | 9.6 |
| 2013 | 24.9 | 181.2 | 9.4 |
As shown in the table, the average temperature in Thailand has increased over the past 30 years, with a slight decline in the 2000s. This trend is consistent with the global warming phenomenon.
Historical Climate Data: Precipitation Trends
The TMD data also shows a slight increase in precipitation in Thailand over the past 30 years, with a peak in the early 2000s.
| Year | Average Precipitation (mm) |
| — | — |
| 1993 | 170.4 |
| 1998 | 182.1 |
| 2003 | 173.9 |
| 2008 | 194.5 |
| 2013 | 181.2 |
This trend is consistent with the El Niño-Southern Oscillation (ENSO) pattern, which affects Southeast Asia.
Climate Data and Economic Impact
The historical climate data has a significant impact on Thailand’s tourism and local economies. The country’s tropical climate and beautiful beaches attract millions of tourists each year, generating significant revenue.
However, extreme weather events such as floods and droughts can also have a negative impact on the economy, particularly in agriculture and infrastructure. Understanding the trends and patterns of climate data allows decision-makers to develop strategies to mitigate these risks and promote sustainable economic development.
Closing Notes: Weather In Thailand December

In summary, Weather in Thailand December is a complex and fascinating topic that requires careful consideration of various factors, including atmospheric pressure, temperature fluctuations, and monsoon patterns.
By understanding these factors, travelers and locals can make informed decisions about planning their activities and preparations for the month ahead.
FAQ Section
What are the average temperatures in Thailand during December?
The average temperature in Thailand ranges from 22-28°C (72-82°F), varying by region.
Are there any notable festivals or events in Thailand during December?
Yes, December marks the beginning of the Loy Krathong festival, where candles are placed on floating lanterns and released onto rivers and streams.
Can I engage in outdoor activities in Thailand during December?
Yes, December is a great time for outdoor activities, such as hiking, swimming, and snorkeling, as the weather is generally warm and sunny.
Are there any regions in Thailand that I should avoid visiting during December?
No, all regions of Thailand can be visited during December, as the weather is generally favorable for tourism.