August is the peak weather for heavy rainfall throughout Thailand. You will experience a short burst of rain throughout the day followed by heavy downpour. The average temperature in Thailand ranges from 25°-31°C. Despite the heavy rainfall, Thailand has 5-6 hours of sunshine on an average in a day. There is an humidity level of more than 82%.
Overview of Thailand’s Weather in August 2025
| Temperature | The average daily temperature during the month of August in Thailand is normally recorded at 25°C to 31°C. |
| Sunshine | Expect sunshine of about 6 hours per day. |
| Rainfall | The average rainfall in the month of August in Thailand is about 170 mm. |
| Humidity | The humidity level of Thailand during the month of August is more than 82%. |
What’s the weather like in Thailand in August?
In the month of August, you will receive the maximum rainfall and humid weather in most of the parts of Thailand. It marks the wettest period in the region.
In August, Thailand’s average temperature typically ranges from 24°C to 32°C during the day time, while at night it is cool at around 24°C. The Northern and the central regions receive the maximum rainfall . The southern region of Thailand like Koh Chang and Koh Kood receives less rainfall as compared to other areas. It is also an incredible time to visit Thailand as you will be surrounded by the lush greenery landscapes all around you.
Since August is a part of the rainy season people hesitate to visit Thailand during this time. However, it can be an ideal time to visit for people who want less crowd and want to spend some time in peace in the wanderlust land of Thailand. Lush green landscapes and refreshed waterfalls offer scenic beauty that’s unmatched in the drier months.
Thailand Weather in Different Months
What to Expect in August in Thailand?
Average daily temperatures in August
You can expect heavy rainfall throughout Thailand as it is the peak season for rainfall. The northern region like Chiang Mai and Chiang Rai receives heavy rainfall with a temperature of about 31–32°C. While Central Thailand like Bangkok and Ayutthaya receives moderate to less rainfall with a temperature of around 33–34°C.. The Northeastern region, like the Isan region also receives heavy rainfall with a temperature of around 32°C. The weather in the month of August varies from region to region.
Sunshine
Although August is the peak time for heavy rainfall, there is still little sunshine which stays for 5 – 6 hours in a day. You might not be able to enjoy the water activities due to sea conditions. However you can plan a visit to the major attractions in the morning time when there is less sunshine and rainfall as compared to the evening time.
Rainfall
In August most of the country receives heavy rainfall throughout Thailand of an average about 150 – 200 mm. However the rainfall varies from region to region with some areas like the southwest coast and northern Thailand receiving a fair amount of rainfall. It is best to avoid outdoor activities during the rainy season and be prepared and carry waterproof gear.
Is August a good time to visit Thailand?
Yes, August is a good time to visit Thailand, if you do not have any problem with the heavy rainfall during this period. Also the weather differs from region to region. You might experience cooler temperatures in the Northern part of Thailand like Chiang Mai. But you will experience a little warm climate in the southern beach destinations like Phuket or Krabi.
Pros and Cons of Visiting Thailand in June
| Pros | Cons |
|---|---|
| August is off peak season which can lead to less crowd so you will be able to enjoy more. | Most of the places will be shut due to heavy rainfall. |
| Fares of most of the things will be lower compared to other months. | The roads are not in good condition which can lead to accidents. |
| The rain leaves behind the lush green landscapes which you can enjoy. | Chances of heavy downpour especially in the afternoon which can make outdoor activities less enjoyable. |
| Immediate relief from the hot and humid weather. | The monsoon rain can cause flood which will impact your trip to Thailand. |
All Your Questions Answered
The weather in Thailand is hot and humid with sudden heavy downpours in the evening time.
Yes, August is the wettest month and it rains like cats and dogs in the month of August.
In August, the Gulf side of Thailand (Koh Samui, Koh Phangan, and Koh Tao) generally experiences the best weather, with a dry season extending into the late part of the month.
It is preferable to wear light breathable clothes and it’s best to carry an umbrella or raincoat.
No, Thailand is not crowded during August.
