✓ Updated February 2026

Weather data and travel information verified current

When is the Best Time to Visit Koh Samui, Thailand?

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Quick Answer:

For a truly unforgettable Koh Samui escape, aim for the period between December and March. This is when the island basks in glorious sunshine, with gentle breezes perfect for exploring the vibrant, bustling markets and soaking in the breathtaking golden sunsets that paint the sky. You'll find the seas are calm and inviting, ideal for snorkeling adventures and lazy days on the powdery sands. Following this, the months of April and May offer continued warmth and sunshine, often with fewer crowds, making it a wonderful time to discover hidden coves and enjoy the island's lush interior before the brief rainy season arrives.

Airport Code

USM

Coordinates

9.53°, 100.06°

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Top Things to Do

Sunrise Serenity at Wat Phra Yai (Big Buddha)

Beat the crowds and witness the majestic Big Buddha statue bathed in the soft, golden hues of dawn. The quiet atmosphere allows for genuine reflection, and the panoramic views of the coastline are simply magical before the day's heat sets in.

Trek to the Secret Waterfall of Na Muang 2

Venture off the beaten path to discover the cascading beauty of Na Muang 2 waterfall. Pack sturdy shoes and a swimsuit for a refreshing dip in its natural pools, a welcome escape from the tropical humidity. Aim for a weekday morning to have this natural wonder mostly to yourself.

Culinary Quest at the Fisherman's Village Night Market

Immerse yourself in the vibrant chaos of Bophut's Fisherman's Village night market. Sample an incredible array of local delicacies from sizzling satay skewers to sweet mango sticky rice, and haggle for unique souvenirs. Arrive early to snag the best street food finds before they sell out.

Kayaking Through the Emerald Caves of Ang Thong Marine Park

Embark on a guided kayaking adventure through the dramatic limestone karsts and hidden lagoons of Ang Thong National Marine Park. Paddle into the 'Emerald Cave' for a truly unforgettable experience, feeling like an intrepid explorer. Choose a tour that includes snorkeling in the crystal-clear waters.

See all 8 things to do →

💡 Travel Tip: For the best value on hotels during this season, check current rates on Trip.com.

Essential Travel Tips

transport

Forget taxis for short hops; rent a scooter! It's the cheapest and most flexible way to explore. Just be sure to wear a helmet (it's the law and crucial for safety), and always carry your international driving permit. Apps like Grab are great for longer distances or if you're not comfortable on two wheels.

food

Don't be afraid of the street food stalls, especially at the night markets like Fisherman's Village or Lamai. Look for stalls with a long queue of locals – that's your sign of delicious and authentic Thai food at unbeatable prices. Try the Pad See Ew or a fresh mango sticky rice!

money

While ATMs are plentiful, they often charge hefty fees. Bring a good amount of cash in USD or EUR and exchange it at reputable exchange booths in Chaweng or Lamai for better rates than airport exchanges. Credit cards are accepted at larger hotels and restaurants, but cash is king for markets and smaller shops.

culture

Dress respectfully when visiting temples, like the Big Buddha Temple. This means covering your shoulders and knees. It's a small gesture that shows respect for the local culture and will allow you to enter freely.

packing

Pack light, breathable clothing and plenty of swimwear. A good quality insect repellent with DEET is essential, especially for evenings. Don't forget reef-safe sunscreen to protect the coral reefs when you go snorkeling or diving around Koh Tao.

safety

Be aware of your surroundings, especially in busy areas like Chaweng Beach. Keep valuables secure and avoid displaying expensive jewelry or electronics. If you're out late, stick to well-lit main roads and consider using Grab or a reputable taxi service instead of walking alone.

💡 Travel Tip: If you're planning your trip, it's worth checking flight prices on Trip.com before you decide.

Weather Details

Jan

5 days

Feb

3 days

Mar

4 days

Apr

8 days

May

14 days

Jun

12 days

Jul

13 days

Aug

14 days

Sep

16 days

Oct

15 days

Nov

12 days

Dec

8 days

Monthly Weather Data Table

Month	High (°C)	Low (°C)	High (°F)	Low (°F)	Rainfall (mm)	Rain Days	Daylight (h)
Jan	30°C	24°C	86°F	75°F	50mm	5 days	11.8h
Feb	31°C	24°C	88°F	75°F	30mm	3 days	11.9h
Mar	32°C	25°C	90°F	77°F	50mm	4 days	12.1h
Apr	32°C	26°C	90°F	79°F	100mm	8 days	12.3h
May	31°C	26°C	88°F	79°F	200mm	14 days	12.4h
Jun	31°C	26°C	88°F	79°F	150mm	12 days	12.4h
Jul	31°C	25°C	88°F	77°F	170mm	13 days	12.4h
Aug	31°C	25°C	88°F	77°F	190mm	14 days	12.2h
Sep	30°C	25°C	86°F	77°F	240mm	16 days	12.0h
Oct	30°C	24°C	86°F	75°F	220mm	15 days	11.7h
Nov	30°C	24°C	86°F	75°F	170mm	12 days	11.6h
Dec	30°C	24°C	86°F	75°F	90mm	8 days	11.6h

🔴 High - Peak tourist season, book early

Quick Tip: Dec offers a quieter experience with fewer tourists.

All Things to Do in Koh Samui, Thailand

Sunrise Serenity at Wat Phra Yai (Big Buddha)

cultural

Best time: November-April

Trek to the Secret Waterfall of Na Muang 2

nature

Best time: September-May

Culinary Quest at the Fisherman's Village Night Market

food

Best time: All year, but especially lively on Fridays

Kayaking Through the Emerald Caves of Ang Thong Marine Park

activity

Best time: November-April

Discover Local Flavors at a Thai Cooking Class

activity

Go beyond restaurant meals and learn the secrets of authentic Thai cuisine with a hands-on cooking class. Many offer visits to local markets to select fresh ingredients, followed by preparing and enjoying your own delicious creations. It's a rewarding way to connect with the culture through its food.

Best time: All year

Sunset Cocktails with a View at The Rock Bar

nightlife

Escape the bustling beach clubs and find a more intimate setting at The Rock Bar, perched dramatically on the cliffs of Laem Sor. Sip on expertly crafted cocktails as the sun dips below the horizon, painting the sky in fiery oranges and purples. The dramatic ocean vistas are unparalleled.

Best time: All year

Explore the Charming Streets of Nathon Town

shopping

Wander through the less-touristed streets of Nathon, the island's administrative capital, for a glimpse of local life. Browse traditional shops selling everything from textiles to fresh produce, and enjoy a more authentic and unhurried atmosphere than the busier tourist hubs.

Best time: All year

Hike to the Secret Buddha Garden

nature

Trek through lush jungle to discover the whimsical 'Secret Buddha Garden' (also known as the Tarnim Magic Garden). This unique sculpture park, filled with stone carvings and mythical figures, offers a tranquil and slightly surreal experience amidst nature. Go early to avoid the midday heat and enjoy the peaceful ambiance.

Best time: November-April

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Getting Around Koh Samui, Thailand

Songthaews (Red Trucks)

These are the most common and affordable way to get around Koh Samui, essentially shared taxis that follow set routes. They're perfect for short to medium distances between popular beach towns and villages.

Cost:20-100 THB per person, depending on distance.

Tip:Agree on the price *before* you get in, even though routes are 'fixed'. Don't expect them to wait for you; if you see your stop, signal the driver by pressing the bell or shouting 'Stop!'. They often fill up, so be prepared for a cozy ride. Avoid using them late at night when fewer are running and prices can be higher.

Scooter Rental

Renting a scooter offers the ultimate freedom to explore Koh Samui at your own pace, accessing hidden beaches and viewpoints. It's ideal for independent travelers who are comfortable riding in traffic.

Cost:200-400 THB per day, with weekly/monthly discounts available. Fuel is extra.

Tip:ALWAYS wear a helmet. Check the scooter thoroughly for existing damage and take photos/videos before you leave the rental shop to avoid disputes. Ensure you have an International Driving Permit (IDP) and your home country's license; police checks are common and fines are hefty. Drive defensively – traffic can be chaotic.

Private Taxis & Ride-Hailing Apps

For comfort, convenience, or late-night travel, private taxis and apps are available. They are more expensive than songthaews but offer direct, door-to-door service.

Cost:Starting from 300 THB for short trips, significantly more for longer distances. Grab is the most popular app, with prices varying by demand.

Tip:Use Grab to get a fare estimate and avoid overpaying. If hailing a taxi directly, insist on the meter or negotiate a fair price beforehand. Be aware that some taxis may refuse to use the meter, especially during peak hours or for popular routes.

Car Rental

Renting a car provides the most comfort and space, especially for families or groups, and allows for extensive exploration of the island's interior and less accessible areas.

Cost:Starting from 800-1500 THB per day, plus insurance and fuel.

Tip:Similar to scooter rental, inspect the car thoroughly and document any damage. Parking can be challenging in busy beach areas. Familiarize yourself with local driving laws and be prepared for narrow, winding roads, especially in hilly areas.

Motorbike Taxis

These are individual riders on motorbikes offering quick rides for one or two passengers. They are good for very short distances or when you need to get somewhere quickly through traffic.

Cost:Typically 30-80 THB for short trips.

Tip:Always agree on the price before hopping on. Helmets are usually provided, but check their condition. These are best for solo travelers and very short hops; they are not ideal for luggage or longer journeys.

💡 Travel Tip: This season usually means better deals — check what's available on Trip.com.

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Frequently Asked Questions

What is the cheapest month to visit Koh Samui, Thailand?

The cheapest months to visit Koh Samui, Thailand are typically May and Jul during the off-season. You can save 30-40% on hotels and flights compared to peak summer months. While weather may not be ideal, you'll enjoy fewer crowds and significant savings.

How many days do you need in Koh Samui, Thailand?

We recommend spending 3-5 days in Koh Samui, Thailand to see the main attractions without feeling rushed. This gives you time to explore the top sights, experience local culture, and take a day trip if desired. Budget travelers might do 2-3 days, while those wanting a deeper experience should plan for a week.

What should I avoid in Koh Samui, Thailand?

Avoid visiting Koh Samui, Thailand during May if possible, when weather conditions are less favorable. Also, be cautious of tourist traps in heavily visited areas - research attractions beforehand and consider booking skip-the-line tickets for popular sites.

Is Koh Samui, Thailand expensive to visit?

Koh Samui, Thailand can be enjoyed on various budgets. Daily costs typically range from $50-80 for budget travelers, $100-200 for mid-range visitors, and $250+ for luxury experiences. Prices are highest during peak season and lowest during off-season months. Book accommodations early to secure better rates.

What is Koh Samui, Thailand famous for?

Koh Samui, Thailand is famous for its unique attractions, rich culture, and memorable experiences. The destination is best known for its architectural landmarks, local cuisine, and vibrant atmosphere. Visit during for the best experience.

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