Best Times to Visit Thailand – Complete Guide
The best times to visit Thailand depend on where you want to go, activities you want to do, and how comfortable you are in the heat and rain. For more information about what to do and places to visit in Thailand, check out my Complete Thailand Travel Guide.
Table of Contents
- When is Thailand’s rainy season?
- Which month is best to visit Thailand?
- When is Thailand’s shoulder season?
- What is the cheapest time to visit Thailand?
- When is the best time to visit the islands/ beaches?
- When is the best time for scuba diving and snorkeling?
- When is the best time to visit Bangkok?
- When is the best time to visit Northern Thailand?
- Additional Thailand Resources
When is Thailand’s rainy season?
Rainy season in Thailand is from June – October in the North (Chiang Mai) and in the South (Phuket) it goes from April – October.
Don’t let the rain scare you though, because the bursts of rainfall can last anywhere from 15 minutes to a couple hours. Additionally, the rain doesn’t equal cold, as the tropical climate is warm enough for shorts year round. The rain often cools down an otherwise unbearably hot day, which ends up making outdoor activities more pleasant.
Which month is best to visit Thailand?
The best time to visit Thailand depends on personal preference and comfort. The rain brings cooler days, which makes outdoor activities much more enjoyable. It also brings fewer crowds, making tourist attractions more enjoyable as well. However, scuba diving is best when the water is calm and visibility is good. Here is a summary of the different seasons:
- Tourist High Season: November – April
- Tourist Low Season: June – October
- (North) Dry Season: November – May
- (North) Rainy Season: June – October
- (North) Burning Season: February – April
- (South) Dry Season: November – March
- (South) Rainy Season: April – October (west coast)
- (South) Rainy Season: September – December (east coast)
When is Thailand’s shoulder season?
Thailand’s shoulder seasons generally fall between the peak tourist periods and the monsoon seasons. The exact timing can vary slightly depending on the region in Thailand, but generally:
Late February to April: This period is considered the shoulder season between the cool and dry season (November to February) and the onset of the hot season. During this time, temperatures are rising, but it’s not yet the peak of the hot season. Note that April can be quite hot, especially towards the end.
September to October: This is another shoulder season between the monsoon season (June to October) and the cool and dry season. The rainy season is winding down, and the weather is transitioning to drier conditions. While there may still be occasional rain, it is not as intense as the peak monsoon months.
During these shoulder seasons, you may find fewer tourists, and accommodation prices might be more reasonable compared to peak times. However, it’s essential to be aware that weather conditions can be somewhat unpredictable, and there is still a chance of rain, especially in September and October, which are towards the end of the monsoon season.
What is the cheapest time to visit Thailand?
The cheapest time to visit Thailand is generally during the monsoon season, which occurs from June to October. However, there are some considerations to keep in mind:
September and October: These months are often the cheapest, as they mark the end of the monsoon season. While there might still be some rain, prices for accommodations and flights tend to be lower, and you can take advantage of the lush greenery and fewer crowds.
Avoiding Peak Tourist Season: If you want to save money and avoid crowds, it’s best to steer clear of the peak tourist season, which typically occurs from November to February. During these months, the weather is pleasant, but prices for accommodations and flights are higher due to increased demand.
When is the best time to visit the islands/ beaches?
The best time to visit Thailand islands, particularly those in the Andaman Sea (west coast) and the Gulf of Thailand (east coast), depends on the specific experiences you’re seeking. For more information regarding which islands to visit and how to get there, check out my Complete Guide to Thailand’s Islands.
Gulf of Thailand Islands (Koh Tao, Koh Samui, Koh Phangan)
Best Time: December to August
Reason: The dry season prevails during these months, providing excellent conditions for beachgoers. September is often transitional, with the possibility of some rain.
Peak Season: December to February is peak, especially around the Christmas and New Year holidays. July and August have increased crowds as well due to the European and American summer break. September usually hits the sweet spot for both crowds and weather.
Rainy Season: September to November
While prices may be lower during the monsoon season, heavy rainfall can lead to rough seas and limited water activities. Some businesses and accommodations on smaller islands might close during this time.
Andaman Sea Islands (Phuket, Krabi, Koh Phi Phi, Koh Lanta)
Best Time: November to April
Reason: This period is the dry season, characterized by lower humidity and less rainfall. The sea is calm, and the weather is suitable for beach activities, snorkeling, and diving.
Peak Season: December to January, with increased prices and more tourists.
Rainy Season: May to October (peaking in June to September)
It’s crucial to note that weather patterns can vary, and climate conditions might not be the same on all islands. Always check specific weather forecasts for the islands you plan to visit.
In summary, if you want to enjoy sunny weather and vibrant marine activities, the dry season is the best time. If you’re looking for budget travel and don’t mind occasional rain, you might consider the shoulder seasons with lower prices, but be aware of the potential impact of the monsoon.
Phuket Weather: Average Temperature and Rainfall
| Month | Phuket avg temp ℉ (℃) | Phuket avg rainfall inches (mm) |
| January | 78.8 (26) | 1.4 (35) |
| February | 80.6 (27) | 1.6 (40) |
| March | 81.5 (27.5) | 3 (75) |
| April | 82.4 (28) | 6.3 (160) |
| May | 81.5 (27.5) | 11.4 (290) |
| June | 81.5 (27.5) | 10.2 (260) |
| July | 81.5 (26.5) | 11 (280) |
| August | 81.5 (26.5) | 12.2 (310) |
| September | 78.8 (26) | 6.1 (410) |
| October | 77.9 (25.5) | 13.6 (345) |
| November | 77.9 (25.5) | 8.5 (215) |
| December | 77 (25) | 2.8 (70) |
When is the best time for scuba diving and snorkeling?
The best time to visit Thailand for snorkeling and scuba diving depends on the region, but is generally from November through April. Generally, the optimal time for underwater activities is during the dry season when visibility is excellent, and the sea conditions are calm.
Andaman Sea (Phuket, Krabi, Koh Phi Phi, Koh Lanta)
Best Time for Diving: November to April
Reason: This period aligns with the dry season, characterized by calm seas, clear waters, and good visibility. Peak conditions are from December to February.
Gulf of Thailand (Koh Tao, Koh Samui, Koh Phangan)
Best Time for Diving: June to September
Reason: While the Gulf of Thailand experiences a different weather pattern, the best time for snorkeling and diving is during the monsoon season. June to September sees calmer seas on the eastern coast, and visibility can still be good, especially around Koh Tao, which is known for its vibrant marine life.
Similan Islands
Best Time for Diving: December to April
Reason: The Similan Islands, a renowned dive destination, are best visited during the dry season for optimal visibility and marine life encounters. Liveaboards to the Similan Islands are popular, and they operate during the dry season.
Always keep in mind that weather conditions can vary, and it’s essential to check the specific conditions for the islands you plan to visit. Additionally, certain marine life, such as whale sharks, may have specific migration patterns that could influence the best time for diving to see particular species. Consult with local dive operators and guides for the most up-to-date information.
When is the best time to visit Bangkok?
The best time to visit Bangkok depends on your preferences for weather and the type of activities you want to engage in. Here are the main seasons in Bangkok:
Cool and Dry Season (November to February)
- This is considered the best time to visit Bangkok by many travelers.
- Temperatures are more moderate, and humidity is lower.
- It’s comfortable for outdoor activities, exploring the city, and sightseeing. Plus, it coincides with many cultural festivals.
Hot Season (March to May)
- This period is characterized by high temperatures and increased humidity.
- While it can get quite hot, it’s still a feasible time to visit if you don’t mind the heat.
- Many indoor attractions and shopping malls provide air-conditioned relief.
Rainy Season (June to October)
- This season sees regular rainfall, and some areas may experience flooding.
- However, rain showers are often short-lived, and the city can still be enjoyable.
- Accommodation prices may be lower, and there are fewer tourists.
Shoulder Season (October – March)
If you prefer to avoid crowds and are willing to manage occasional rain, the shoulder seasons of late October to early November and March to April might also offer a good balance between weather and fewer tourists.
Bangkok Weather: Average Temperature and Rainfall
| Month | Bangkok avg temp ℉ (℃) | Bangkok avg rainfall inches (mm) |
| January | 80.6 (27) | 0.4 (10) |
| February | 82.4 (28) | 0.8 (20) |
| March | 84.2 (29) | 1.4 (35) |
| April | 86 (30) | 3 (75) |
| May | 85.1 (29.5) | 8.7 (220) |
| June | 84.2 (29) | 5.9 (150) |
| July | 83.3 (28.5) | 6.1 (155) |
| August | 82.4 (28) | 8.5 (215) |
| September | 80.6 (27) | 13.6 (345) |
| October | 80.6 (27) | 10.4 (265) |
| November | 78.8 (26) | 2 (50) |
| December | 77.9 (25.5) | 0.3 (8) |
When is the best time to visit Northern Thailand?
(Chiang Mai, Chiang Rai, Pai)
The best time to visit Northern Thailand is generally during the cool and dry season, which spans from November to February. During this period, the weather is more comfortable for outdoor activities, and the landscapes are lush and green. Here’s a breakdown of the seasons:
Cool and Dry Season (November to February)
- This is considered the prime time to visit Northern Thailand.
- Temperatures are cooler, and the weather is generally dry and pleasant.
- Ideal for exploring cities like Chiang Mai and Chiang Rai, trekking, and enjoying outdoor attractions.
Hot Season (March to May)
- This period experiences rising temperatures and increasing humidity.
- While it can get quite hot, it’s still a feasible time to visit if you don’t mind the heat.
- April is often the hottest month.
Rainy Season (June to October)
- This season brings heavier rainfall, and some areas may experience flooding.
- Outdoor activities may be affected, but the landscapes are lush and vibrant.
- Accommodation prices are often lower, and there are fewer tourists.
If you’re particularly interested in the vibrant cultural experiences and festivals of Northern Thailand, the cool and dry season is a great time to visit. The Yi Peng Lantern Festival in Chiang Mai, for example, typically takes place in November.
Chiang Mai Weather: Average Temperature and Rainfall
| Month | Chiang Mai avg temp ℉ (℃) | Chiang Mai avg rainfall inches (mm) |
| January | 69.8 (21) | 0.4 (10) |
| February | 73.4 (23) | 0.6 (15) |
| March | 78.8 (26) | 0.8 (20) |
| April | 84.2 (29) | 2.2 (55) |
| May | 82.4 (28) | 6.1 (155) |
| June | 80.6 (27) | 4.7 (120) |
| July | 80.6 (27) | 6.1 (155) |
| August | 80.6 (27) | 8.9 (225) |
| September | 80.6 (27) | 8.1 (205) |
| October | 78.8 (26) | 4.7 (120) |
| November | 73.4 (23) | 2 (50) |
| December | 69.8 (21) | .8 (20) |
Burning Season
The burning season in Northern Thailand typically occurs between February and April each year.
Here are some important things to know about the burning season in Northern Thailand:
- Causes: The main cause of the burning season is agricultural burning, where farmers burn crop residues and clear land for the next planting season. This practice is deeply rooted in traditional farming methods, despite being illegal and actually terrible for the soil and environment.
- Air Pollution: The burning season leads to a significant increase in air pollution levels, with thick haze blanketing cities and rural areas alike. The air quality can become hazardous, with high concentrations of particulate matter (PM2.5) and other pollutants.
- Health Concerns: The poor air quality during the burning season can have serious health implications, particularly for vulnerable groups such as children, the elderly, and people with respiratory conditions. Symptoms may include coughing, difficulty breathing, and eye irritation.
- Travel Advisories: During the peak of the burning season, it is recommended that people either limit outdoor activities or travel somewhere else until the air quality is better.
- Visibility: The haze can significantly reduce visibility, posing challenges for transportation, both on roads and in the air. Some airports may experience flight delays or cancellations due to poor visibility.
- Efforts to Mitigate: The Thai government and local authorities have been making efforts to discourage agricultural burning and promote alternative methods of waste disposal or crop residue management. However, changing long-standing practices has been a challenge.
Truthfully, it’s advisable to avoid traveling to northern Thailand during burning season because of the serious health risks, and frankly, it’s a vibe killer.
Summary
The best time to visit Thailand is during the cool and dry season, which spans from November to February. This period offers pleasant temperatures, lower humidity, and clear skies, making it ideal for various outdoor activities, sightseeing, and cultural experiences. November to February is particularly recommended for exploring popular destinations like Bangkok, Chiang Mai, and the islands. If you prefer to avoid crowds and can tolerate occasional rain, the shoulder seasons of late October to early November and March to April also provide a good balance between favorable weather and fewer tourists. However, it’s crucial to consider the specific regions you plan to visit, as weather conditions can vary between the northern and southern parts of the country.
Additional Thailand Resources
Check out my video on YouTube about my experience in Thailand during the rainy season:
