Thailand in May 101: The Complete Explorer's Guide

Want to escape the gray and travel to sunny regions? Thailand stands out as a destination of choice in May. Although marking the start of the rainy season, the climate remains mild for discovering the wonders of the country. Between majestic temples, tropical islands, traditional festivals and gastronomy with a thousand flavors, this country is full of treasures to explore. Follow the guide, we reveal all the charms of a trip to Thailand in May.

Written by Hung DAO (Local Expert) Updated on 21-05-2025

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1. Is May a good month to go to Thailand?

Thailand in May kicks off the rainy season with short, late-afternoon showers, but plenty of sunshine keeps beaches and sights vibrant. As a shoulder month, you’ll find fewer crowds at popular spots and score great deals on flights for a budget-friendly beach getaway. So, May is the best time to visit Thailand to keep your budget in check, while still enjoying the best experiences with fewer tourists.

Below is a quick weather forecast for different areas of Thailand in May:

• Central Thailand (around Bangkok): Expect temperatures between 25°C (77°F) and 34°C (93°F), with high humidity. Afternoon showers are common, so it's a good time to explore cultural sites and markets.

• North-Eastern Thailand: It can get very hot, with temperatures reaching up to 38°C (100°F), along with frequent thunderstorms. This is ideal for those who enjoy extreme heat and don’t mind taking cover during storms.

• Northern Thailand (Chiang Mai & Chiang Rai): Temperatures range from 28°C (82°F) to 35°C (95°F), with some rain in May. It’s still a great time to explore the region’s landscapes, just make sure to bring waterproof gear.

• Eastern & South-Eastern Coasts: Expect moderate rainfall and temperatures between 26°C (79°F) and 33°C (91°F), with pleasant sea temperatures around 28-30°C (82-86°F). Perfect for a beach getaway.

• Phuket & Krabi (Southwest): Despite occasional showers, you’ll enjoy sunny days and comfortable temperatures ranging from 25°C (77°F) to 33°C (91°F).

Summary of Thailand in May

• May marks the start of the rainy season in Thailand. However, the climate remains pleasant for traveling.
• If showers occur regularly, they are generally brief and give way to nice clearings. It is still possible to enjoy outdoor activities and discover the tourist sites on good weather days.
• It is also the low tourist season. Crowds are lower, especially in seaside resorts. Airfare and accommodation prices are more attractive.

2. Unforgettable Festivals in Thailand in May

Thailand comes alive with vibrant festivals throughout the year, and May is no exception. Here are some of the most interesting festivals you might encounter during your trip:

Royal Ploughing Ceremony:

• Date: May 9th, 2025 (dates vary each year)
• Place: Grand Royal Palace and Sanam Luang, Bangkok 

Every May, Bangkok’s Royal Plowing Ceremony is a must-see for soaking up Thai culture! This lively festival blesses future harvests with two cool parts: a Buddhist blessing at the Grand Palace, then sacred oxen plowing and scattering rice seeds at Sanam Luang. 

During this colorful event that takes place in Sanam Luang, sacred oxen hooked to a wooden plow symbolically trace a furrow in the ground, while sowing grains of rice. A typical folk festival that you should not miss if you visit Thailand in May!

Rocket Festival

• Date: May 16 - 18, 2025 (dates vary each year)
• Place: Ubon Ratchathani, Yasothon and Nong Khai

The festival which takes place in the Isan region, in the provinces of Ubon Ratchathani, Yasothon and Nong Khai. The Bun Bang Fai festival in Yasothon is one of the loudest events in Thailand! Every year in May, huge homemade rockets are launched with a deafening noise at Phaya Thaen Park, as a propitiatory symbol for good rains and rice harvests. For two days, colorful parades, street theater, traditional brass bands and Miss election also enliven this unforgettable authentic festival.

The rockets are propelled using powder compressed in bamboo. A trip in May from 16th (in 1 week)  to this region of Isan would be incomplete without witnessing this impressive fireworks show!

Thai Buddhist Festival (Visakha Bucha - Nationwide)

• Date: May 12, 2025 (dates vary each year)
• Place: Bangkok

Visakha Bucha, one of the major Buddhist holidays in Thailand, commemorates the birth, enlightenment and death of Buddha on May 12, 2025. Celebrated on the full moon of the sixth lunar month, this sacred day honors the founder of Buddhism and his teachings. Thai people go to temples and offer food and donations to the less fortunate.

Although schools are closing, most businesses remain open. Living the Visakha Bucha is a unique cultural and spiritual experience to discover an essential part of Thai culture.

>>> See Thailand's Festivals Throughout the Year: Click Now!

Outdoor activities:

• You can visit the islands of the Gulf of Thailand (Koh Samui, Koh Tao, Koh Phangan, etc), go snorkeling, explore brilliant coral reefs and colorful fish.
• Don't miss the opportunity to visit national parks like Khao Sok or Doi Inthanon, home to magnificent waterfalls, diverse wildlife and captivating hiking trails.

3. Where to Go in Thailand in May?

In May in Thailand, it rains almost all over the country. However, some areas are even less affected by the monsoon and are often much drier than other parts of the country. That doesn't mean it doesn't rain at all. In fact, some days can be very sunny. 

Below is a summary of must-see attractions in Thailand in May:

3.1 Cultural and History Sites

• Bangkok

Even in the middle of the rainy season, Bangkok remains a captivating destination. Its many attractions are usually indoors, and the sunny morning and afternoon weather allow you to enjoy the outdoor sites, which lets you explore outdoor spots like the Grand Palace, home to the Emerald Buddha, and the giant reclining Buddha at Wat Phra Kaew.

Besides, Wat Pho and Wat Arun, two of Bangkok's most iconic temples, have colorful spires that shine after rain. Let's hop on a boat to visit both! Indoor options like museums, restaurants, bars, and malls keep you busy if it pours. Visit early to dodge the heat and crowds for a perfect Bangkok adventure. Not to mention a vibrant nightlife! Rain or not, Bangkok retains all its charm.

• Ayutthaya

An hour’s drive north from Bangkok, Ayutthaya is Thailand’s ancient capital packed with temple ruins and Buddha statues. It’s a great day trip in May, when rains make the greenery pop around the open-air site. Rent a bike for $5 or join a guided tour to explore the history through architecture, the artifacts and stories told by your guide will help you visualize how a country once known as a paradise of the sea was formed!

• Sukhothai

Sukhothai, often called the birthplace of Thai civilization, is home to the ruins of the country's first capital. The historical park is filled with well-preserved temple ruins, ancient Buddha statues, and peaceful lotus ponds, all set in a calm, wide-open space. For Thai people, Sukhothai is more than just a place; it’s a reminder of their roots and cultural history. Unlike many other tourist spots in Thailand, Sukhothai remains relatively undeveloped, making it the perfect place for those who want to connect with the rich history and culture of the Kingdom.

• Chiang Mai & Chiang Rai

Chiang Mai and Chiang Rai are perfect spots to visit in May, with mild temperatures and little rain.

Unlike super touristy cities, Chiang Mai keeps its real Thai charm. You can check out tons of Buddhist temples, cool museums, and local markets. It’s also a solid spot for outdoor fun, like hiking in the nearby mountains.

Near the Golden Triangle by Laos and Myanmar, Chiang Rai pulls you in with awesome mountain views and green scenery, plus its epic White Temple and Blue Temple. It’s got a neat opium museum too, diving into the area’s history.

3.2 Lazy Days on Thailand's Dream Beaches

• Koh Samui

May is the best month to visit Koh Samui and enjoy the perfect weather of this island paradise. Located on the coast of the Gulf of Thailand, it benefits from less rainfall than the rest of the country. Its magnificent white sand beaches make it a dream destination. Koh Samui also offers exciting festivals and a vibrant nightlife. This is the ideal destination for a successful seaside holiday in Thailand in May!

>>> You might love: Thailand Islands: Guide to Choosing the Best One

• Koh Phangan 

In May, Koh Phangan becomes the perfect destination for party lovers. While the rest of the country suffers heavy rains, this island paradise with its white sandy beaches hosts the famous Full Moon Festival. Every month, about 30,000 people gather for this gigantic night party. Koh Phangan is a must-see stopover for backpackers in Thailand. Between dreamy beaches during the day and an unbridled nightlife, the island will satisfy all party lovers.

>>> Related article: Everything about the Full Moon Party in Koh Phangan

• Hua Hin

Hua Hin is the perfect coastal destination to escape the May rains. Located in the Gulf of Thailand, this beach, easily accessible from Bangkok, seduces visitors with its fine sand and turquoise waters. Its large, luxurious hotels are adjacent to renowned international restaurants.

Don't forget that, in addition to its beaches, Hua Hin offers interesting cultural sites such as the Royal Summer Palace of Mrigadayavan, the night market for shopping, and the Wat Huay Mongkol temple with its giant statue. The cost of the trip is especially noteworthy, as many tourists find it quite affordable compared to other famous tourist destinations in Thailand.

• Koh Tao

Home to luxury hotels, vibrant nightlife, and picturesque beaches, Koh Tao is the perfect getaway to relax and get excited. Upon arrival, you can experience strong emotions: dive into Shark Bay to swim with sharks and admire green turtles. You can also learn Muay Thai. Koh Tao in May awaits you with unforgettable experiences, where beauty and excitement merge in a tropical paradise.

>>> Read more: Scuba Diving In Thailand: The 10 Most Fascinating Dive Sites

• Pattaya

Pattaya is perfect for anyone looking to kick back by the sea. The city is home to a bunch of great beaches, like Pattaya Beach, Jomtien Beach, and Wongamat Beach. You can dive in for a swim, soak up the sun, try snorkeling, or even go scuba diving.

But Pattaya isn’t just about the beaches. There’s also plenty to see and do; from exploring Buddhist temples and checking out amusement parks to wandering through museums and night markets. It’s a place that has something for everyone.

May offers a fantastic time to visit Thailand, with pleasant temperatures and budget-friendly travel opportunities. Here are some tips to ensure a smooth and enjoyable experience:

Packing Essentials for Thailand in May:

• Beat the Heat: Pack breathable fabrics like t-shirts, shorts, and light dresses.
• Embrace the Rain: An umbrella and a lightweight raincoat are handy for afternoon showers.
• Sun Protection Essentials: Don't forget sunscreen, a wide-brimmed hat, and sunglasses.
• Respectful Attire: When visiting temples, cover your shoulders and knees with loose-fitting clothing.
• Mosquito Repellent: Pack insect repellent for evenings and outdoor activities.

Budget-Friendly Travel Tips:

• Affordable Flights: Take advantage of cheaper plane tickets compared to peak season.
• Accommodations on a Budget: Find comfortable guesthouses or hotels for $15-$30 per night during May.
• Local Transportation: Utilize tuk-tuks and buses for a cost-effective way to explore. Consider travel passes for public transportation in major cities.

Discover how to master your budget for an unforgettable two-week adventure in Thailand with our article: How Much Does It Cost to Travel to Thailand? Prices and Tips 2024

A Taste of Thailand: Must-Try Food in May

Indulge in Thailand's world-renowned cuisine:

• Savor Iconic Dishes: Sample Pad Thai, Tom Yum soup, and fragrant curries.
• Grill It Up: Try delicious grilled skewers with meat, seafood, or vegetables.
• Seasonal Delights: In May, relish fresh tropical fruits like mangoes, pineapples, and lychees.

By following these tips, you'll be well-prepared to experience all that Thailand in May has to offer.

Conclusion

In short, Thailand in May will seduce travelers in search of authenticity and a change of scenery. Despite a humid tropical climate, many areas remain sunny for much of the month. Lovers of nature, culture and fine sandy beaches will be delighted. As a bonus, the attractive rates in low season are an added bonus. So, are you convinced by a trip to the land of smiles in May? All you have to do is pack your bags and take off for Thailand!

✈️ · 🧳  Ready to explore Thailand? Read these articles:

• Thai Beers: Discover Thailand in a Different Way
• What to Bring back From Thailand? The 17 Must-See Thai Souvenirs
• Northern Thailand in 2024: What to Do and What to See?
• Mastering Your Budget in Thailand 2024: Prices and Tips