14 Best Things to do in Koh Samui, Thailand, in 4 to 5 days

Introduction

A beautiful Thai island, famed for its stunning wild nature and palm-fringed, crystal-clear waters. Koh Samui feels like paradise and suits every type of traveller, whether you’re looking to relax, explore, or dive into adventure.

It’s Thailand’s second biggest island after Phuket, but what really makes it special is the vibe: laid-back beaches, great viewpoints, lush national parks, and superb scuba diving spots.

We spent 4 amazing days there, and Alex’s parents even met us on the island. It was the perfect spot to slow down, share good meals, and soak in Thailand’s island charm.

There’s plenty to do on Koh Samui, but here are some of our favourite experiences to make the most of your stay.

Read: The perfect 3-week Thailand Itinerary from North to South

Getting there

Koh Samui is well-connected and fairly easy to reach. If you’re coming from Bangkok or other major Thai cities, you have two main options:

By Air: Koh Samui Airport (USM) is privately operated and has frequent direct flights from Bangkok (about 1 hour), Phuket, Chiang Mai, and even international hubs like Singapore. It’s the fastest and most convenient way to get there.

By Ferry: If you’re coming overland or want a cheaper option, take a bus or train to Surat Thani on the mainland. From there, you can catch a ferry (about 1.5–2 hours) to Samui. Ferries also run from Donsak Pier, Chumphon, and nearby islands like Koh Phangan and Koh Tao.

Moving Around

Koh Samui is a relatively large island but easy to get around with plenty of transport options.

We rented a scooter, which is the most flexible and budget-friendly way to explore. It allows you to explore hidden beaches, waterfalls, and viewpoints at your own pace. Just be cautious on the winding roads, especially in wet season.

If you’re not comfortable driving a scooter, you can hire a car—many rental agencies are on the island. It’s great for families or groups.

Songthaews (shared red pickup taxis) run along main roads and can be flagged down anywhere. They’re a cheap way to hop between towns like Chaweng, Lamai, and Maenam.

For short trips or nights out, taxis and private drivers are easy to find, but always agree on the price first since they rarely use meters.

When to Visit

Koh Samui is a year-round destination, but the experience changes with the seasons.

• Dry Season (December–February): This is the best time to visit. Expect sunny days, lower humidity, and clear seas—perfect for beach-hopping, diving, and outdoor adventures. Temperatures hover around 25–30 °C (77–86 °F).
• Hot Season (March–May): Things heat up with temperatures climbing to 30–35 °C (86–95 °F). It’s great for sun-lovers but be ready for intense midday heat. Early mornings and evenings are best for exploring.
• Rainy Season (October–November): Koh Samui’s monsoon hits hardest now, with heavy showers, occasional storms, and higher humidity. That said, it doesn’t rain all day, and you can still find pockets of sunshine. Temperatures stay around 25–30 °C (77–86 °F).
• Shoulder Season (June–September): Often overlooked, these months have a mix of sunny days and light showers, with fewer tourists. It’s a good time to snag deals while enjoying mostly decent weather.

Recommendation: For the best balance of sun, activities, and comfort, aim for December to February. It’s peak season, but with good reason.

We usually travel with Airalo eSIMs, but when we need unlimited data for work, we go with Holafly.

Where to Stay

Koh Samui has fantastic options for every style and budget. Here are our top recommendations for your stay—whether you want something simple and charming, a stylish mid-range escape, or full-on luxury.

• (€) Palm Coco Mantra – A friendly, relaxed beachfront spot perfect for travelers looking for value without sacrificing beautiful views or direct beach access.
• (€€) Napasai Samui – An elegant option with lush gardens and a private beach. Ideal for couples or families wanting a bit more comfort and Thai-inspired luxury.
• (€€€) Four Seasons Resort Koh Samui – The ultimate indulgence on the island, with stunning villas, private pools, exceptional service, and dreamy views over the Gulf of Thailand.

Here are all your accommodation options in Koh Samui

What to Eat

Thailand is a true paradise for food lovers, and Koh Samui is no exception. Whether you’re wandering local markets or dining in stylish restaurants, you’ll find amazing flavors everywhere.

Generally, some of the must-try Thai dishes are:

• Pad Thai – Thai-style fried noodles, often cooked fresh at street stalls.
• Som Tam – Spicy green papaya salad, perfect for a refreshing bite.
• Pad See Eiw – Thick, savory stir-fried noodles with dark soy sauce.
• Khao Pad – Classic Thai fried rice.
• Gaeng Keow Wan – Fragrant green curry with coconut milk and herbs.
• Pad Phak – Stir-fried vegetables, a go-to for plant-based eaters.
• Kao Niew Ma Muang – Sweet mango with sticky rice, a beloved Thai dessert.

In Koh Samui, we especially loved the street food market in the main town—a lively, colorful spot full of affordable, delicious options. But the island is also home to many excellent restaurants, so you can go from casual local eats to stylish beachfront dining without missing a beat.

Tip: We use the DJI Action 4 to film our vlogs — compact, durable, and perfect for capturing every adventure.

Things to do in Koh Samui

Relax at the beach

Koh Samui is all about laid-back island vibes, and nothing beats spending time on its beautiful beaches. Whether you want to swim, sunbathe, or just watch the world go by, you’ll find the perfect spot.

Some of our favorite beaches include:

• Chaweng Beach – The most popular and lively, with soft sand and plenty of bars and restaurants.
• Lamai Beach – A little quieter than Chaweng but just as beautiful, great for a relaxed day out.
• Maenam Beach – A more peaceful stretch with calm waters and a more local feel.

Here are all your accommodation options in Koh Samui

Enjoy Your Resort

One of the best things to do on Koh Samui is simply make the most of your resort. Many places here are designed for pure relaxation, with beautiful pools, beach access, tropical gardens, and incredible service.

Take a lazy morning with breakfast overlooking the ocean, spend the afternoon lounging by the pool or getting a massage at the spa, and finish the day with sunset cocktails or dinner by the beach.

Whether you’re staying somewhere budget-friendly or in a luxury villa, Koh Samui’s resorts are made to slow you down and help you soak up island life.

Go Diving

If you’re not heading to Koh Pha Ngan or Koh Tao, Koh Samui is still a fantastic base for diving adventures. Join a full-day scuba diving tour to experience the warm, clear waters around the island.

Many trips head out to Koh Tao, famous for its easy and beautiful dive sites, or to Sail Rock—one of Thailand’s best diving spots. There, you might be lucky enough to see manta rays, schools of barracuda, or even a whale shark. It’s the perfect way to add a little adventure to your beach holiday.

Wander Through the Night Markets

No trip to Thailand is complete without exploring a night market, and Koh Samui has some of the best. For us, night markets are one of our favorite things to do—they’re lively, colorful, and always full of surprises.

On Koh Samui, don’t miss Mae Nam on Thursdays, Bophut on Fridays, and Lamai on Sundays. Whether you’re after local street food, souvenirs, or just the buzzing atmosphere, these markets are the perfect evening outing.

Here are all your accommodation options in Koh Samui

Explore Fisherman’s Village

Also called Bophut, this lively old village is one of the top spots on Koh Samui. It’s known for its laid-back charm and atmospheric mix of rustic shop-houses and stylish restaurants. The village hosts a bustling night market on Monday and Friday, perfect for picking up local souvenirs or tasting street food.

You’ll find plenty of restaurants, beach bars, and even street cocktail stalls to relax with a drink while watching the world go by.

Visit Big Buddha – Wat Phra Yai

One of the most iconic landmarks on Koh Samui, the Big Buddha is a must-see. This 12-meter-tall golden statue sits proudly on a small rocky island connected by a causeway to the north of Samui. It’s an impressive sight, with intricate details and panoramic views over the sea. It’s also an active temple, so remember to dress modestly when you visit.

Hike to Namuang Waterfall

Discover the lush jungle of Koh Samui by hiking to the Namuang Waterfalls, a set of two scenic falls. The first waterfall is easily accessible and spills into a natural pool perfect for a refreshing swim. For the more adventurous, a thirty-minute uphill trek leads to the second waterfall, offering a wilder, quieter spot surrounded by tropical greenery.

Explore the Secret Buddha Garden

Discover one of Koh Samui’s hidden gems tucked away in the island’s lush interior. Started in 1976 by Nim Thongsuk, this garden features dozens of statues and sculptures set among winding paths and dense forest. Beyond the peaceful atmosphere, you’ll also find panoramic views over the island. Be prepared though—the road up is steep and challenging, adding a bit of adventure to the visit.

Here are all your accommodation options in Koh Samui

Explore Angthong Marine Park

Hop on a tour boat to visit the stunning Angthong Marine Park—an absolute must if you haven’t already explored it from Koh Pha Ngan or Koh Tao. Hike to the top of Mae Koh for breathtaking views of the Emerald Lagoon, snorkel in crystal-clear waters at Wua Talap Island, and kayak along the dramatic, limestone-dotted coastline. It’s an unforgettable day of adventure and natural beauty.

Visit Wat Plai Laem

Any visit to any place in Thailand is also not completely done without visiting a couple of temples. This new made temple feature an 18m statue of Guanyin, the GoddessNo trip to Thailand is complete without visiting a few temples, and Wat Plai Laem is one you shouldn’t miss on Koh Samui.

This modern temple complex is striking for its massive 18-meter statue of Guanyin, the Goddess of Mercy and Compassion, surrounded by intricate artwork and a serene lake filled with fish. It’s a peaceful, visually stunning place to soak up local culture and spirituality.of Mercy and Compassion.

Tip: Check the Half-Day Island Highlights Tour with Hotel Pickup

See the Mummified Monk

If you’re nearby, make a stop at this unusual and fascinating site. The mummified monk is displayed in an upright glass casket, surrounded by flowers, candles, incense sticks, and fruit offerings. It’s a striking and respectful glimpse into local Buddhist traditions and the reverence for spiritual teachers.

Visit Pig Island (Koh Madsum)

Take a short boat trip to Koh Madsum, famously known as Pig Island. It’s a laid-back spot where friendly pigs roam the beach and swim in the shallow waters. Perfect for a fun day trip from Koh Samui, you can relax on the sand, take photos with the pigs, and enjoy the clear water. Tours often include snorkeling stops nearby, making it a well-rounded island adventure.

Tip: Check out the Pig Island Tour by Speedboat with Snorkeling

Go on a 4WD Jungle Safari Tour

That is quite the That’s quite the classic tourist experience, but it’s genuinely fun and a great way to see the island. Koh Samui is big, and exploring it by 4WD lets you access hidden spots without the stress of navigating on your own. T

hese tours typically take you to highlights like the Mummified Monk, the Namuang Waterfalls, and the Secret Buddha Garden (also called the Magic Garden), all while bouncing through lush jungle tracks with fantastic views along the way. thing to do, but as mentioned earlier Koh Samui is a big island so going on a Jungle Safari Tour in a 4WD sounds like a cool idea.

The most famous tours will bring you around to the Mummified Monk, the Namuang Waterfall and the Buddha’s Magic Garden.

Tip: The 4WD Wild Jungle Safari Tour with Lunch is one of the best

Meet Elephants at the Elephant Kingdom Sanctuary

If you’re an animal lover, consider visiting the Elephant Kingdom Sanctuary. This ethically run center focuses on caring for rescued elephants in a natural, humane environment. You’ll get the chance to feed them, learn their stories, and see them roam and bathe freely—no riding involved. It’s a meaningful experience that helps support elephant welfare while giving you an unforgettable, up-close encounter with these gentle giants.

Tip: The Elephant Kingdom Sanctuary Half-Day Tour has amazing reviews

4 days Itinerary Koh Samui

Day 1:

• Visit Big Buddha – Wat Phra Yai: Admire the island’s iconic 12-meter statue.
• Explore Wat Plai Laem: See the colorful temple with its striking 18-armed Guanyin statue.
• Relax at Chaweng Beach: Enjoy the lively vibe and soft white sand.
• Evening at Fisherman’s Village: Wander markets, enjoy street cocktails, and dine at beachfront restaurants.

Day 2:

• Go on a 4WD Jungle Safari Tour: Visit island highlights in one fun-packed day.
• Stop by the Mummified Monk: See this unusual and spiritual site.
• Hike to Namuang Waterfall: Cool off in jungle pools.
• Discover the Secret Buddha Garden: Tucked in lush hills with panoramic views.
• Relax at Lamai Beach: Unwind on a quieter stretch of sand.
• Shop at a Night Market: Try street food and browse local crafts.

Day 3:

• Go Diving: Explore stunning underwater sites or head to Koh Tao or Sail Rock.
• Chill at Maenam Beach: A peaceful spot with palm-fringed sand.

Day 4:

• Day Trip to Angthong Marine Park: Kayak, hike, and snorkel among breathtaking islands.

Day 5:

• Meet Elephants at the Elephant Kingdom Sanctuary: Support ethical tourism while feeding and learning about these gentle giants

Read: The perfect 3-week Thailand Itinerary from North to South