Thailand weather in August

Wondering about the weather in Thailand in August? Here, we'll cover everything from average air and sea temperatures to what to look forward to on your Thailand vacation. Plus, we'll share inspiring itinerary suggestions to help you make the most of your trip.

Is August a good time to visit Thailand?

August can be a challenging time to visit Thailand due to the rainy season, especially in the northern and central regions. Heavy rains, high humidity and the possibility of flooding are common this month. However, on the southern islands such as Phuket and Koh Samui, the weather can be more favourable for holidays. 

When travelling to Thailand in August you should be mindful of the possibility of disrupting outdoor activities and travel plans and have a backup plan. Overall though, if you don't mind the occasional rain and prefer fewer people, you can enjoy the weather in Thailand in August.

Ready to explore Thailand? Embark on your dream trip hassle-free with the help of our Thailand travel experts.


Erawan, Kanchanaburi, Thailand @ Shutterstock

Air & sea temperatures in Thailand in August

The weather in Thailand in August is characterised by warm temperatures, which vary from region to region.

August temperatures in Northern Thailand

In August, temperatures in Northern Thailand typically range from 24°C to 31°C (75°F - 88°F). The region experiences a monsoon season characterised by periodic heavy rainfall and high humidity.

August temperatures in Central Thailand

In August in central Thailand, temperatures range from 24°C to 31°C (75°F - 88°F). The central region also experiences a monsoon, resulting in occasional showers and wet weather.

August temperatures in Southern Thailand

In the south of Thailand, including the islands of Phuket and Samui, temperatures in August range from 25°C to 31°C (77°F - 88°F). Although this is also the monsoon season, the weather in the southern islands can be more stable compared to the northern and central regions.

Sea temperatures in Thailand in August

Sea temperatures in Thailand in August remain warm, ranging from 28°C to 30°C (82°F - 86°F). Despite the rainy season, the waters around the southern islands remain attractive for swimming and water activities.

Ready to embark on a Thailand adventure? Don't miss our Thailand itineraries and information on how to get there

Ao Nuan Beach on the island of Koh Samet in Thailand © Muzhik/Shutterstock

Ao Nuan Beach on the island of Koh Samet in Thailand © Muzhik/Shutterstock

Can it rain in Thailand in August?

Yes, August is part of Thailand's rainy season and during this month the country experiences the southwest monsoon, which brings with it an increase in rainfall and humidity. In the northern and central regions, including Bangkok and Chiang Mai, heavy downpours are possible, while the southern islands receive intermittent rainfall.

While the trip can be enjoyable, especially in the southern regions where there are intermittent rainfall intervals, travellers should be prepared for wet weather and occasional interruptions to outdoor activities. 

To find the ideal season to visit Thailand for you, make sure to read all about the best time to visit Thailand.

What about the crowd & cost?

August in Thailand tends to see a decrease in the number of tourists due to the rainy season. Many travellers choose to visit during the drier months, which results in fewer tourists. While this can be beneficial for those looking for a more relaxing holiday, it should be kept in mind that some attractions and activities can be affected by the weather.

In terms of cost, Thailand is generally a cost-effective destination, with prices for accommodation, excursions and other services dropping even further during the low season. Hotels and airlines may run promotions to attract tourists during this period.

Seascape of Thailand, Lipe Island © Shutterstock

The weather in Thailand in August still allows you to enjoy your holiday in this spectacular country © Shutterstock

What to wear in Thailand in August?

When going on a trip, prioritise lightweight and breathable clothing suitable for the hot and humid weather in Thailand in August. Also, given the rainy season, take along a compact, quick-drying mackintosh and umbrella to be prepared for occasional downpours. 

Although August is a wet month, don't forget your swimming costume and sun protection as beach holidays are still available despite the rains. Due to the increased likelihood of mosquitoes, take insect repellent with you to protect yourself from bites. These tips will help you feel comfortable and prepared for a variety of weather conditions during your August trip to Thailand.

Family sunset on the beach in Thailand Koh Lanta island © Adel Newman/Shutterstock

Koh Lanta Island, Thailand © Adel Newman/Shutterstock

Unforgettable and fully customisable Thailand itineraries

Our tailor-made trip service allows you to fully enjoy the weather in Thailand in August without the planning or hassle. All of our itineraries are created by local Thailand travel experts and can be tailored to meet your specific needs.

  • Unique Thailand (12 days): Discover the hidden treasures of Bangkok, Hua Hin and Chiang Mai. A unique multi-centre trip around Thailand, this is the perfect package for those seeking adventure, culture and an off-the-beaten-track experience.
  • Southern Thailand Explored (5 days): Discover the best of Southern Thailand: soak in the serenity at a forest temple, experience the opulence of a summer palace fit for a king and walk bare-footed along pristine white-sand beaches.
  • Best of Thailand with Phuket (10 days): Discover Thailand's busy capital Bangkok with its unique markets and temples before heading north to Chiang Mai - the cultural centre of Thailand offers authentic family experiences as well as elephants up close. End your trip with beach days in beautiful Phuket.

Or discover more Thailand itineraries.

Canoeing at Khao Sok National Park in Surattani © Shutterstock

Canoeing at Khao Sok National Park in Surat Thani © Shutterstock

What to do in Thailand in August

While going on a trip, one must consider the weather in Thailand in August and the nuances that this month brings. You may also be interested in our list of the best things to do in Thailand at any time of year.

Celebrate Ubon Ratchathani Candle Festival

Travelling to Thailand in August there is a chance of catching the Ubon Ratchathani Candle Festival, which falls in July or August depending on the year. This festival is enchanting with a candle carving competition, grand processions with elaborately carved candles, traditional performances and religious ceremonies.

Go on a Khlong Saen Saep express boat trip

Embark on an unusual adventure in Bangkok with a ride on the Khlong Saen Saep Express Boat. This local water journey is not only a practical means of transport but also a scenic and unconventional view of the bustling city. 

Gliding along the water, and observing daily life along the canal, you'll immerse yourself in the authentic charm of Bangkok's water transport system, offering a truly unique and unforgettable experience for visitors exploring the bustling Thai capital.

Visit Chao Lay Sea Gypsy Village

Discover the charming Chao Lei Sea Gypsy Village on Koh Lanta, a fascinating journey into the distinctive culture of the Sea Gypsy community. Immerse yourself in their traditional way of life as you explore the authentic charm of the village. Interact with the locals, learn about their heritage and witness age-old traditions, creating an unforgettable and rich cultural experience on the serene shores of Koh Lanta Island.

Have a mud spa experience

Harness the healing properties of Samui's rainy season with a rejuvenating mud spa. Indulge in a tropical atmosphere where heavy rainfall enhances the revitalising properties of the mud. Immerse yourself in a revitalising treatment, allowing the natural elements to nourish your skin and soothe your senses, creating a unique and blissful spa experience that harmonises with the lush nature of the island.

Explore Tham Lod Cave

Embark on a fascinating adventure in Pai, plunging into the depths of Tham Lod Cave. This vast limestone cave, with an underground river running through it, offers a mesmerising view of the underworld. Travelling through its caves, you will see unique rock formations and experience the enchanting beauty of stalactites and stalagmites.

Grand Palace in Bangkok, Thailand © Mazur Travel/Shutterstock

Grand Palace in Bangkok, Thailand © Mazur Travel/Shutterstock

Planning your August trip to Thailand

For more inspiration, read about Thailand's beaches and islands and start planning your trip with The Rough Guide to Thailand

Daunted by the prospect of planning? No problem! Browse our customisable Thailand itineraries, and talk to our local Thailand travel experts

Visit Thailand in other months

Olga Sitnitsa

written by
Olga Sitnitsa

updated 05.06.2024

Online editor at Rough Guides, specialising in travel content. Passionate about creating compelling stories and inspiring others to explore the world.

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