10 Things I Wish I Knew Before Visiting Koh Samui

Koh Samui looks small on the map. The beaches look perfect on Instagram. You imagine warm evenings, fresh seafood, and sunsets that look exactly like the photos. And most of that is true. But there are a few things I wish someone had told me before my first trip.

Not “don’t go here” advice. Just small, practical realities that make the difference between a good holiday and a great one.

After years of living here, and watching friends, family and readers visit for the first time, these are the ten things I think everyone should know before visiting Koh Samui. If you know them in advance, you’ll plan smarter and enjoy the island exactly the way it’s meant to be enjoyed.

This is a long blog… I got carried away, so you can jump to the tips you think will be most useful below👇 Or… you could read the whole thing 😉

1. Cash is still king

One of the biggest surprises for first-time visitors is just how cash-based Koh Samui still is. Yes, you’ll find card machines in larger hotels, beach clubs and higher-end restaurants, but the moment you step into local markets, beach bars, massage huts, taxi rides, or street food stalls, it’s cash only.

Even in popular areas like Fisherman’s Village, small restaurants, bars, night market vendors and beach sellers will only accept Thai baht. If you’re planning to visit Fisherman’s Village Night Market, make sure to bring cash with you; small notes are preferable.

‣ ATM Fees Add Up Quickly

Thai ATMs charge a flat withdrawal fee (250 THB/£5.90/€6.80 per transaction), no matter how much you take out. If you’re withdrawing small amounts regularly, that adds up fast over a two-week trip.

This is where having a travel-friendly card makes a big difference. We personally use Wise when travelling and living abroad because:

You can hold multiple currencies.
Exchange rates are much better than most high street banks.
You can withdraw larger amounts in one go to reduce ATM fees.
You can pay by card where it’s accepted (larger restaurants, hotels, beach clubs).

➡️ You can check out the Wise card here (great for Thailand and beyond).

If you’re staying longer-term or moving around Southeast Asia, it’s honestly one of the easiest ways to manage your travel money.

‣ Top Tip: Withdraw Bigger, Not Often

When you arrive, withdraw a sensible amount for a few days rather than small amounts daily. Use your card where possible and save cash for:

Markets
Beach vendors
Street food
Local taxis and songthaews
Local Thai restaurants

Koh Samui is modern and easy to travel around, but cash still rules in everyday life here, and being prepared will make your trip much smoother.

2. Not all beaches are the same

Koh Samui might look small on the map, but the beaches are completely different depending on which side of the island you stay on. The sand, the sea conditions, the vibe, the boat traffic, the nightlife, it all changes.

Choosing the wrong beach for your travel style can genuinely change your experience.

📍 Chaweng – Lively & Buzzing

If you want energy, beach clubs, water sports and nightlife, Chaweng is your spot. The sand is soft and white, the water is generally clear, and there’s always something happening.

It’s ideal if you:

Want to be near bars and clubs
Love beach clubs and DJs
Are travelling with friends
Want plenty of restaurants within walking distance

It’s not the quietest area, but for first-time visitors who want that “classic Thailand beach holiday” feel, it’s a strong choice.

📍 Bophut – Character & Convenience

Bophut Beach (home to Fisherman’s Village) has a completely different feel. It’s more relaxed, charming and restaurant-focused.

The sand here is a little coarser and the sea isn’t always that perfect turquoise swimming water you see on postcards. But what you do get is:

Incredible restaurants
Family-friendly
Boutique hotels
Incredible views over to Koh Phangan

It’s brilliant for couples, food lovers and anyone who wants atmosphere without full-on party mode. If you’re staying here, you’ll definitely want to read our full Fisherman’s Village guide.

📍 Choeng Mon – Calm & Easy

Choeng Mon is one of my personal favourites for a chilled vibe. The beach is smaller, the sand is softer than in Bophut, and the water is generally calm and shallow.

It’s ideal for:

Families
Couples
Mid-luxe travellers
Anyone who wants peace but not total isolation

You’re still only a short drive from Chaweng if you want a livelier evening.

📍 Lipa Noi – Quiet & Sunset-Focused

On the west coast, Lipa Noi feels like a different island entirely. It’s quieter, less developed, and famous for its sunsets.

The water here is shallow and calm, which makes it great for families with young children. But it’s definitely not the place to stay if you want nightlife or lots happening around you.

It’s perfect if:

You want proper switch-off mode
You’re planning a honeymoon or slow trip
You love sunset views

3. Traffic + taxis will cost more than you expect

Koh Samui isn’t huge… but it’s not tiny either. And getting around isn’t always as cheap or as easy as people assume.

🚕 Taxis

Taxis on Samui do not use meters. You have to negotiate prices and even now we find them very expensive. We used to live in Brighton, UK and I think they are comparable. When we visited Bangkok I was so shocked by how cheap the taxis were by comparison to Samui.

As a rough guide:

Short daytime ride: 300–500 THB
Airport transfer: 400–800+ THB
Late night (after beach clubs or bars): even more

If you’re staying in one area and walking everywhere, you won’t notice it much. But if you’re bouncing between Chaweng, Bophut and Lamai every day, it adds up fast.

🛻 Songthaews (Shared Pick-Up Trucks)

These red open-air trucks run fixed routes around the island. They’re cheaper than taxis but not exactly predictable.

You flag one down, tell them where you’re going, and agree a price. If it’s on their route, great. If not, you’ll likely pay private-hire prices anyway. Prices per person should range from 50 – 200 THB but again, you do need to negotiate and we have noticed that the drivers are asking for much higher fares in the past 12 months.

They can be a good budget option during the day, less so late at night, as they will often try and charge double.

📱 Grab/InDrive/Bolt

These apps do operate here, but you will find that there are restrictions regarding pick up and drop off spots. They are definitely cheaper than taxis, so always our go-to. InDrive is cheaper than Grab but doesn’t offer card payments. Grab also offers taxi bikes, if you’re brave… I am not, even after living here for 4 years, I’d rather take a car.

These apps are also useful as a price reference point when negotiating with Songthaew and taxi drivers.

🛵 Scooter Rental

This is how most people get around. Scooters are affordable and give you freedom to explore beaches, viewpoints, markets and waterfalls at your own pace. But:

You must feel confident riding
Wear a helmet
Have appropriate travel insurance
Carry an International Driving Permit

It’s not something I’d recommend if you’ve never ridden before. The roads can be busy, and Samui’s hills are no joke.

Seriously, though, Thailand has the highest death rate in the world for bike accidents. If you do not know how to ride a bike, do not learn in Thailand. In 2024 alone, 14,144 deaths were specifically linked to motorcycle incidents. Motorcyclists and their passengers account for roughly 80% of all road traffic fatalities in Thailand. On average, approximately 38 to 40 people die daily in motorcycle accidents (roughly one death every two hours). Don’t risk it.

🚤 Inter-Island Travel

If you’re planning to visit Koh Phangan or Koh Tao, don’t just turn up at the pier and hope for the best. Ferries and speedboats will often get booked up during high season. We always pre-book tickets through 12Go. You can also use it for mainland transfers and longer onward journeys.

4. The heat will humble you

You might think you’re good in the heat. You’ve done Spain in August. You’ve survived a London heatwave. You once sat outside in 28 degrees and felt fine.

Koh Samui will humble you. This isn’t “summer heat.” This is tropical, high-humidity, sun-directly-over-your-head heat. By midday, it can feel like you’re walking inside a suffocating cloud. And you will sweat, constantly… and A LOT. Between 11am and 3pm, the sun is crazy intense. Beaches are beautiful, but there’s very little shade unless you’re at a beach club or under a palm.

‣ Plan your day around the heat

Early mornings are for walks and temple visits.
Midday is for shade, swimming, long lunches, or air-conditioned cafes.
Late afternoon and sunset? That’s when the island comes alive again.

Trying to power through sightseeing at 1pm is usually when people start to feel dizzy and/or tired.

‣ Hydration is not optional

You will drink more water than you think. It’s not just about being thirsty; the humidity means you sweat constantly. Dehydration headaches sneak up quickly.

Always travel with a good insulated water bottle. It sounds basic, but having ice-cold water still cold three hours later makes a huge difference. When you’re buying water from 7 Eleven, it’s tempting to buy the cheapest bottle, but we’d recommend buying mineral water, as it hydrates much better than filtered water.

Electrolytes are also a quiet lifesaver if you’re spending full days out exploring. Highly recommend picking up some sachets of Royal D from a local 7-Eleven.

‣ Sun protection is serious business

The UV index in Thailand is strong year-round. Even on cloudy days, you can burn. Bring a high-SPF sunscreen, we like Sun Bum (linked) as it’s also reef-safe, and reapply more often than you think you need to.

Also, while we’re on the topic of sunscreen, if you forget to bring some from home, don’t freak out. There seems to be a rumour that it’s crazy expensive here. It isn’t.

We buy ours from one of the Boots stores we have here (at Big C or in Central Samui) and get Soltan, which is the same price as the UK… I always try to stock up when it’s a BOGOF. We also have Watsons (which is similar to Superdrug) that sells familiar brands such as Nivea. And worst case scenario, 7 Eleven also sell Nivea, and it’s less than a tenner a bottle.

5. You don’t need to over-plan, but book a few things early

You don’t need a minute-by-minute itinerary or to pre-book every excursion, and you definitely don’t need to schedule your beach time. But. There are a few things that do book up quickly, especially during peak season. January–April and July–August. If there’s something you really want to do, it’s worth booking it early.

‣ Boat Trips Do Sell Out

Island-hopping trips, tours to Pig Island and Ang Thong Marine Park are some of the highlights of visiting Samui. And they fill up fast. If a boat trip is high on your list, I’d recommend booking it at least a few days in advance. Check out our best boat trips blog for more inspo.

➡️ Read: Best Boat Trips from Koh Samui

Booking early means you can also compare reviews, choose smaller group tours, avoid last-minute stress and plan the rest of your week around the weather. Trust me, there’s nothing worse than deciding you want to go tomorrow and realising it’s fully booked.

‣ Beach Clubs Get Busy

Koh Samui’s beach clubs are popular for a reason: sea views, cocktails, DJs, and long, lazy lunches. But the best tables (front row, shaded daybeds, sunset spots) are usually reserved ahead of time.

If you’re visiting during high season or planning a birthday celebration, or just want a guaranteed sunset table, make sure to book ahead.

➡️ Read: The Best Beach Clubs in Koh Samui

‣ Popular Restaurants Fill Up Fast

Especially in areas like Fisherman’s Village and Chaweng. During peak months, some of the most-loved restaurants can be fully booked 2–3 days in advance, particularly for sunset and dinner service.

You don’t need to book every meal of your trip. But if there’s a specific place you’ve seen on Instagram or read about on blogs, it’s worth reserving in advance.

➡️ Read: The Best Restaurants in Fisherman’s Village

‣ The Sweet Spot Strategy

Here’s what I recommend:

✔️ Book at least one boat trip
✔️ Book one or two must-visit restaurants
✔️ Reserve a daybed at a beach club

Over-planning can make the island feel stressful. Under-planning can mean missing the highlights. Find the middle ground.

6. Markets aren’t just for shopping

If you think night markets are just for elephant trousers and fridge magnets, you’re missing the best part. In Koh Samui, markets are food heaven. Yes, you’ll find clothes, gifts and little trinkets. But the real reason locals and visitors go? Street food. And lots of it.

‣ Night Markets = Your Best Casual Dinner

Instead of booking a formal restaurant every evening, mix in a market night.

You’ll find:

Freshly grilled seafood & BBQ skewers
Pad Thai cooked to order
Mango sticky rice & sweet roti dripping in condensed milk
Spicy papaya salad made right in front of you
All different tropical fruits, shakes and smoothies
Fried insects if you’re brave enough
Food from all around the world
And 99 THB cocktails

You can try five different dishes for the price of one restaurant main. It’s chaotic in the best way, and completely part of the Thai experience.

‣ Fisherman’s Village Walking Street

The Night Market in Fisherman’s Village is one of the most popular on the island. If you’re staying nearby, it’s an easy and fun evening out.

➡️ Read: My Full Guide to Fisherman’s Village

‣ Don’t Be Afraid to Try Things

One of the biggest hesitations people have is street food safety.

Choose stalls that:

Have a queue (locals are your best sign)
Cook food fresh in front of you
Turn over ingredients quickly

Markets are where you’ll often taste the most authentic Thai flavours of your whole trip. And honestly? Some of your best meals in Samui will be eaten standing up with a plastic fork in hand.

💡 A Quick Tip. Bring cash. Small notes are definitely a good idea. And go very hungry. You’ll want to try everything… don’t skip dessert, it’s the best bit!

7. Dress codes – here’s what you need to know

Koh Samui is laid-back. Flip flops are normal. Beach hair is expected. No one blinks if you show up sandy from a beach day. But there are a few situations where the “island casual” vibe doesn’t quite apply. And it’s good to know that before you pack.

‣ Temples = Modest Dress Required

If you’re visiting places like Wat Plai Laem or the Big Buddha temple, you’ll need to dress respectfully.

That means:

Shoulders covered
No very short shorts or mini skirts
No crop tops

You don’t need anything fancy. Just something lightweight that covers you properly.

An easy trick? Pack an oversized loose shirt, cute kimono or sarong in your day bag. It doubles as sun protection and solves temple dress codes instantly.

‣ Nicer Restaurants & Hotels

For most beach bars and casual restaurants, shorts and sandals are absolutely fine. But if you’re planning sunset cocktails, a romantic dinner, or drinks at a luxury hotel, people do tend to dress it up slightly. Not formal. Just not sandy hair, don’t care vibes.

Think:

Flowy dresses
Linen shirts
Smart shorts or trousers
Sandals (not beach flip flops)

You won’t be turned away for being casual, but you might feel slightly underdressed.

‣ Respecting Local Culture

Koh Samui is a relaxed, tourist destination, but it’s still Thailand. And Thailand is a predominantly Buddhist country where modesty and respect are important in public spaces. Beachwear belongs at the beach. Once you leave the sand, it’s good manners to cover up.

That means:

No walking into 7-Eleven shirtless
No strolling through town in just swim shorts
No bikinis in supermarkets, markets or cafes

It might feel normal in parts of Europe, but here it’s considered disrespectful. Locals are incredibly polite; they won’t usually say anything. But that doesn’t mean it’s appropriate. A simple sarong, oversized shirt, or light cover-up makes all the difference.

‣ Easy Packing Tips for Samui

You don’t need a huge wardrobe. Just pack smart:

✔️ Lightweight, breathable fabrics (linen and cotton are your best friends)
✔️ One or two slightly dressier evening outfits
✔️ A cover-up or oversized shirt for temples
✔️ A hat for the sun
✔️ Comfortable sandals you can actually walk in

➡️ Read: What to Pack for Southeast Asia: The Complete Travel Packing List

8. The island is bigger than it looks on a map

When you first look at Koh Samui on a map, it looks small. You think: “We can stay anywhere and just explore the whole island easily.” Technically… yes. Realistically? You’ll be spending a lot of time sitting in traffic.

Koh Samui is about 25km wide, and driving from one side to the other can take over an hour and even longer in traffic or during busy periods.

‣ Driving Times Matter More Than You Think

If you stay in Lipa Noi but want to eat in Fisherman’s Village every evening, that’s around 50 minutes drive each way… longer in the evenings. You’re based in Maenam but want nightlife in Chaweng? It’ll take at least 35 – 40 minutes each way. And, if you’re staying in a villa up in the hills, taxis can take longer and cost you more.

‣ Staying in the “Right” Area Makes a Huge Difference

One of the biggest mistakes first-time visitors make is booking a beautiful hotel without considering what’s nearby.

Ask yourself:

Do I want nightlife?
Do I want walkable restaurants?
Do I want total quiet?
Am I planning boat trips?
Do I want easy access to Fisherman’s Village?

Each area has a very different feel.

Chaweng = lively, central, busy, noisy
Bophut / Fisherman’s Village = restaurants, walkable evenings, charming vibe
Choeng Mon = relaxed but still convenient, fewer bars and restaurants
Lipa Noi = peaceful, more remote, long drives to anywhere else
Maenam = quiet, long beaches, fewer options

Where you stay shapes your whole trip.

‣ Transport Options

You can:

Rent a scooter (only if you are an experienced driver – see my point above)
Use taxis or Grab/Indrive/Bolt
Use Songthaews (although prices now are similar to taxi prices and these take longer)
Arrange transfers with your hotel
Hire a car

But relying on daily taxis if you’re far from your preferred area can quickly become expensive. Sometimes it’s smarter to stay somewhere slightly busier and take the occasional trip to quieter beaches, rather than the other way around.

💡 The Simple Rule. Pick the area that matches your trip style. Don’t assume you’ll just “nip around the island” every day. You can explore, absolutely. But choosing the right base makes everything quicker and easier.

9. Bugs are very much a part of island life

It’s tropical. There are palm trees. There’s humidity. There’s lush greenery. And yes… there are bugs. Mosquitoes in particular are part of everyday life in Koh Samui, especially around sunset and after rain. They’re not everywhere all the time, but you will most definitely encounter them at some point.

🦟 Mosquitoes & Dengue Awareness

Thailand does have cases of dengue fever each year. It’s not something to panic about, but it is something to be aware of. The good news? Prevention is simple.

Wear repellent daytime and at especially at night
Cover up slightly at dusk
Use air conditioning or a fan – this stops them from being able to land on you
Keep doors & windows closed at night

Most bites are just itchy and annoying. A few are inevitable. But protecting yourself is easy. Look for products with DEET or picaridin if you’re staying for a while.

‣ 7-Eleven Is Your Friend

Forgot repellent? 7-Eleven sells small bottles of mosquito spray, lotions and patches.

They’re cheap, easy to grab, and everywhere on the island. The pink spray bottles you’ll see all over Tiktok, it actually works and costs less than £2.00.

‣ It’s Not Just Mosquitoes

You may also see:

Tiny ants, very annoying but totally harmless
The occasional gecko, also harmless and eat bugs & mosquitos – although are noisy
Monitor lizards, snakes, tokay geckos – it’s unlikely you’ll see many of these around, but they do exist in Samui, it’s all part of island living

Most visitors don’t have any serious issues with mosquitoes, but if you’re allergic then please cover up and use plenty of repellents. I would also recommend getting some mosquito coils if you’re staying in a villa or citronella candles for your balcony. If you ignore repellent completely, you’ll definitely notice. It’s one of those “small effort, big reward” things. Spray once in the evening and enjoy your cocktail in peace.

10. Samui is what you make it

Koh Samui can be whatever you want it to be:

Late nights in Chaweng
Sunset cocktails in Fisherman’s Village
Quiet mornings on an empty stretch of beach
Yoga retreats and spa days
Boat trips and full itineraries
Or absolutely nothing at all but days lounging on the beach in the sunshine

If you want music, energy and nightlife, you’ll find it. If you want slow mornings and long lunches, that’s here too. And most people land somewhere in the middle.

‣ Travel at Your Own Pace

One of the biggest shifts people feel when they arrive is this: you don’t have to rush. Samui isn’t a “tick off every landmark” destination. Wake early. Swim. Eat. Rest. Explore. Repeat.

The best holidays often come from leaving space for:

A spontaneous massage
A second sunset drink
A market you stumble across
A beach you didn’t plan to visit

‣ And Yes… It Rains

Tropical islands aren’t sunshine 24/7. There will be rain. Sometimes quick and dramatic. Sometimes a full afternoon downpour. Rain in Samui often feels warm and short-lived. The skies clear, the air cools, and the island smells fresh again.

Plus, there’s plenty to do when the weather turns, cafés and long lunches, cooking classes and spa days to name a few. Rain doesn’t ruin Samui, it just slows it down.

➡️ Read: What to Do in Koh Samui When It Rains

Koh Samui isn’t complicated. But it does have its own rhythm. If you respect the heat, book a few things in advance, stay in the right area, cover up when it matters and pack some mosquito spray, you’ll avoid the small frustrations that catch most first-time visitors off guard.

And once you remove those little stress points? You’re left with what Samui does best. Beautiful beach days, slow mornings, long lunches, vibrant night markets, incredible sunsets and the absolute best adventures.

Planning your trip? Check out these helpful guides:

Travel safe and don’t forget to subscribe for more travel tips + guides!

Sending sunshine from Koh Samui,

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