14 Best Things to do in Koh Samui for Couples

Allyssa Laco

Last updated 10 Oct 2025

Birds-eye photo of Koh Samui Island | Photo Credit: Unsplash

When you think of tropical romance, you probably imagine white-sand beaches, swaying palm trees, and sunsets that make you want to stay forever. Welcome to Koh Samui, Thailand’s second-largest island and a dream escape for tourists.

If you’re looking for inspiration, this guide covers the best things to do in Koh Samui, especially for couples. Whether you’re newlyweds, celebrating an anniversary, or just craving time together in paradise, you’ll find plenty of Samui attractions that blend romance with a touch of adventure.

So grab your partner, pack that sunscreen, and let’s dive into all the magical moments waiting for you on this island gem.

1. Sunset Strolls and Dinner on Chaweng or Lamai Beach

Nothing says romance like walking hand-in-hand along the shoreline while the sun dips below the horizon. Koh Samui is famous for its beaches, including Chaweng Beach and Lamai Beach, which are two of the most well-known.

Chaweng Beach is lively, with lots of restaurants, beach clubs, and nightlife. If you love energy and options, this is your spot.
Lamai Beach is a little quieter, with a relaxed vibe and plenty of cozy bars and restaurants perfect for date nights.

For couples, book a beachfront table at a seafood restaurant or join one of the candlelit dinners arranged right on the sand. Fresh lobster, chilled wine, and the sound of waves? That’s as romantic as it gets.

2. Couples Spa Day

Koh Samui is renowned for its spa culture, and indulging in a couples massage is a must. You’ll find everything from luxury spa resorts to small family-run massage shops right on the beach.

Some of the most popular spa experiences for couples include:

Traditional Thai Massage: Energizing, healing, and perfect after a day of exploring.
Aromatherapy Oil Massage: Gentle and relaxing, ideal for couples wanting to unwind.
Luxury Spa Packages: Often include scrubs, herbal baths, and private suites for two.

Top spots: Amari Koh Samui, Tamarind Springs Forest Spa, Six Senses Spa, or the peaceful beachfront salas along Choeng Mon Beach.

Klook Tip: Book your treatment in the late afternoon to enjoy a post-massage sunset cocktail together.

3. Visit the Big Buddha (Wat Phra Yai)

Among the most famous Samui attractions, the Big Buddha Temple is a must-see. Standing 12 meters tall, the golden Buddha is perched on a small island connected by a causeway.

Couples will love the serene atmosphere, the gentle sound of temple bells, and the panoramic views of the surrounding bay. It’s not just about the photo opportunity; it’s also about sharing a peaceful and cultural moment.

Dress respectfully (shoulders and knees covered), and maybe even light a candle or incense as a symbolic gesture for your journey together.

4. Secret Garden Adventures

For adventurous couples, Koh Samui’s waterfalls are some of the island’s most romantic natural wonders.

Na Muang Waterfalls (1 & 2): Known as the “Purple Waterfalls” because of the rock coloring, these are among the most famous. Great for a refreshing dip together.
Hin Lat Waterfall: Surrounded by lush jungle and walking trails, perfect for couples who love hiking.
Tarnim Magic Garden (Secret Buddha Garden): Not a waterfall, but a hidden garden in the hills with statues, streams, and mystical vibes.

Klook Tip: Pack swimwear, bring a picnic, and make it a mini day-trip for two.

5. Take a Private Boat Trip to Ang Thong National Marine Park

For couples who crave adventure and romance, a private boat trip to Ang Thong National Marine Park is unforgettable.

This protected archipelago of 42 islands is dotted with limestone cliffs, hidden lagoons, and beaches that look straight out of a movie. Many tours include kayaking, snorkeling, and a hike to the viewpoint overlooking the Emerald Lagoon.

A private charter means you and your partner can explore at your own pace, enjoying quiet beaches all to yourselves.

6. Explore Fisherman’s Village Night Market

If you arrive on a Friday, this is the perfect way to kickstart your couple’s weekend. The Fisherman’s Village Night Market in Bophut is buzzing with food stalls, craft vendors, and live music.

Couples can wander hand in hand, sampling street food like satay skewers, mango sticky rice, and coconut ice cream. Pick up some handmade souvenirs, sip on cocktails from beachside bars, and soak in the lively, romantic atmosphere.

7. Romantic Sunset Cruise

Few experiences rival a sunset cruise in Koh Samui. Picture this: you and your partner on a luxury catamaran, champagne in hand, watching the sky turn fiery orange and pink as the island fades into silhouette.

Some cruises even include dinner, live music, or snorkeling stops. It’s a fantastic way to combine relaxation, romance, and just the right amount of adventure.

8. Try a Thai Cooking Class Together

Food is a huge part of Thai culture, and what could be more romantic than learning how to cook together? Cooking classes in Samui often start with a market visit where you’ll pick fresh herbs, vegetables, and spices. Then, guided by a local chef, you’ll whip up classics like Tom Yum soup, green curry, and pad Thai.

The best part? Sitting down together afterward to enjoy the feast you’ve just created. It’s fun, interactive, and something you’ll bring home as a shared memory.

9. Visit Hin Ta and Hin Yai Rocks (Grandfather and Grandmother Rocks)

Hin Ta and Hin Yai Rocks are iconic natural formations and one of the quirkiest Samui attractions. Shaped like male and female anatomy, they’re a fun photo stop and a local legend.

While it may feel like a cheeky stop, couples often enjoy the humor and the chance to explore the little stalls selling coconut ice cream nearby. It’s a lighthearted addition to your romantic adventure.

10. Take a Yoga or Wellness Class Together

Koh Samui is a hub for wellness seekers, with yoga studios, detox retreats, and meditation centers scattered across the island. For couples, trying a yoga class or meditation session together can be a grounding and bonding experience.

Popular wellness centers include Absolute Sanctuary and Vikasa Yoga. Whether you’re a complete beginner or an experienced yogi, it’s a beautiful way to connect in a serene setting.

Activity Card: https://www.klook.com/en-AU/activity/31997-wellness-day-programs-absolute-sanctuary-koh-samui/

11. Snorkeling and Diving at Koh Tao or Koh Nang Yuan

If you’re both water lovers, plan a snorkeling or diving trip to nearby Koh Tao or Koh Nang Yuan. The crystal-clear waters, colorful coral reefs, and abundance of marine life make it one of the top things to do in Koh Samui for adventurous couples.

Snorkeling side by side, spotting clownfish and angelfish, or taking your first dive together will leave you with lasting memories.

12. Dine at a Luxury Cliffside Restaurant

For an unforgettable date night, splurge on dinner at one of Koh Samui’s stunning cliffside restaurants. Places like Jungle Club, Dining on the Rocks at the restaurant inside Six Senses Resort), or Air Bar at InterContinental offer panoramic views paired with gourmet cuisine.

Imagine sipping wine while looking out over the twinkling lights of the island, with the ocean stretching endlessly below. It’s luxury, romance, and atmosphere all in one.

13. Elephant Jungle Sanctuary

For an unforgettable and ethical adventure, couples shouldn’t miss the Elephant Jungle Sanctuary in Koh Samui, where you can spend the day feeding, bathing, and learning about these gentle giants responsibly.

Instead of rides or shows, the sanctuary focuses on conservation and care. It can be a heartwarming experience to share with your partner as you splash elephants in the mud, wash them in jungle pools, and capture playful, candid moments together.

14. Day Trip to Koh Phangan or Koh Tao

While Samui itself is packed with things to do, couples often enjoy a day trip to nearby islands. Taking a boat out together adds an extra layer of adventure to your romantic holiday.

Koh Phangan isn’t just about Full Moon Parties; it also has secluded beaches, waterfalls, and yoga retreats perfect for couples. You can try snorkeling or diving at Koh Phangan, depending on your preference for adventure.
Koh Tao is a paradise for divers and snorkelers.

FAQs about what to do in Koh Samui

1. What not to miss on Koh Samui?

Don’t miss the Big Buddha Temple, Fisherman’s Village Night Market, Na Muang Waterfalls, and a sunset cruise. For couples, a spa day and a private boat trip to Ang Thong Marine Park are unmissable highlights.

2. What is Koh Samui best known for?

Koh Samui is best known for its stunning beaches, luxury resorts, vibrant nightlife, and cultural attractions like the Big Buddha. It’s also famous for wellness retreats, diving spots, and being one of Thailand’s top honeymoon destinations.

3. How many days are enough for Koh Samui?

A stay of 4 to 5 days is ideal to enjoy the main Koh Samui attractions, relax on the beaches, and take a day trip to nearby islands. If you want to truly unwind and explore at a slower pace, a week in Koh Samui is even better.

Koh Samui Activities for Couples

When it comes to things to do in Koh Samui for couples, the island has it all: adventure, culture, and romance. Whether you’re chasing waterfalls, pampering yourselves at a spa, learning to cook Thai food, or simply sipping cocktails as the sun sets, every moment feels like it’s been designed just for two.

From iconic tourist spots like the Big Buddha to hidden gems like secret gardens and cliffside restaurants, the island is a mosaic of experiences waiting to be shared.

So pack up and let Koh Samui work its magic. Your only challenge will be deciding which unforgettable moment to start with.

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