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 favorable for vavations. If you're planning a trip to Thailand, it’s worth considering these regional weather differences to make the most of your visit.

When traveling in August, be mindful that outdoor activities and transport plans might get disrupted by sudden downpours, so having a backup plan is a good idea. If you're visiting Thailand with kids, indoor attractions like Bangkok’s interactive museums or Chiang Mai’s cultural centers can be great alternatives when the rain hits. Overall, if you don’t mind the occasional downpour and prefer fewer crowds, August can still be a rewarding time to explore Thailand.

Average daily temperatures in August

In August, Thailand is deep into its monsoon season, with frequent rain and high humidity. Bangkok temperatures range from 78°F (26°C) at night to 91°F (33°C) during the day, with around 8 inches (200mm) of rain. 

Chiang Mai sees similar daytime highs of 88°F (31°C) but cooler nights at 73°F (23°C). 

Southern Thailand, particularly Phuket, Krabi and Samui, can expect heavier rain, with up to 13 inches (330mm) of precipitation and temperatures between 77°F (25°C) and 87°F (31°C). Despite the wet conditions, you’ll still get 5-6 hours of sunshine per day. Travel during August is more affordable due to the rain, and the country’s jungles are vibrant and green. Be prepared for sudden downpours, especially in the afternoons.

What about the crowd and cost?

August is similar to July in terms of crowds and weather, with more European tourists arriving during their summer vacations. Islands in the Gulf of Thailand—such as Koh Samui, Koh Phangan, and Koh Tao — stay busy thanks to relatively dry conditions compared to the wetter Andaman Coast.

If you're looking for the best places to visit in Thailand during this time, these islands offer a great mix of beach weather and a lively vibe. Just remember that the best time to visit Thailand can vary depending on the region, so August tends to favor the Gulf side over the west coast.

Accommodation prices are moderate but can spike in popular tourist areas. With a bit of flexibility and a willingness to skip the busiest spots, you can still find great deals.

Still haven't decided where you're going this summer? Explore our list of the best places to travel in August.

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

Traveling 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 way to see the city.

As you glide along the canal, passing stilted houses, temples, and hidden neighborhoods, you’ll get a glimpse of daily life that's far removed from the tourist crowds. It’s an immersive way to experience the authentic charm of Bangkok’s water transport system. Staying somewhere with easy access to the pier can make this trip even more convenient, so it’s worth considering where to stay in Bangkok to take full advantage of offbeat adventures like this.

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 subway river running through it, offers a mesmerizing view of the underworld. Traveling through its caves, you will see unique rock formations and experience the enchanting beauty of stalactites and stalagmites.

Festivals and events in Thailand in August

There are several festivals and events that take place in Thailand in August. Here's our pick:

• Queen's Birthday / Mother's Day: Celebrates the birthday of Queen Sirikit, honoring her and mothers nationwide. Features alms-giving ceremonies, candle-lighting rituals, and special Mother's Day activities throughout the country.
• Chanthaburi Fruit Festival: Showcases the eastern province's abundant fruit harvest. Visitors can sample and buy various tropical fruits. Includes fruit-themed parades, competitions, and cultural performances celebrating local agriculture.
• Phimai Boat Races: Traditional long-boat races held on the Mun River in Nakhon Ratchasima province. Teams compete in colorfully decorated boats. Includes folk performances, local food fairs, and light and sound shows.
• Phuket Vegetarian Festival: Taoist celebration of spiritual cleansing and merit-making. Features strict vegetarian diets, sacred rituals, and spectacular acts of self-mortification. Includes street processions and fireworks displays.

Plan your trip with our Thailand itineraries

Our Thailand itineraries are crafted to help you experience the best of the country, stress-free. Think of them as a starting point — perfect for planning, but flexible enough to adjust to your own pace and interests. After all, travel is about freedom, but a little planning goes a long way.

• Thailand itinerary 7 days: A week in Thailand is just enough to see the highlights, usually a mix of Bangkok, one cultural destination, and some beach time.
• Thailand itinerary 10 days: Ten days lets you explore multiple regions, such as Bangkok, northern Thailand, and a few days on the coast.
• Krabi itinerary: Explore Krabi’s famous limestone cliffs, emerald waters, and hidden beaches. Great for adventure enthusiasts with options for island hopping, rock climbing, and snorkeling.
• Phuket itinerary: A Phuket trip offers a mix of vibrant nightlife, beautiful beaches, and cultural sites. Expect lively markets, water activities, and a range of beach resorts.
• Chiang Mai itinerary: Discover Chiang Mai’s rich cultural heritage, from ancient temples to bustling night markets. Ideal for travelers looking for a blend of history, local crafts, and lush mountain scenery.