If your idea of a tropical escape doesn’t include elbowing your way through packed beaches in Phuket or waiting in line for the same must see selfie spots in Phi Phi, you’re not alone. More and more travelers in 2025 are craving something deeper a connection to authentic Thailand, where the beaches are empty, the air is still, and the ocean is yours alone.
This isn’t a vacation for the masses. It’s a journey for those who want to escape the crowds, avoid the tourist traps, and discover Thailand’s Secret Islands places so untouched they don’t show up on the average traveler’s radar. Imagine walking barefoot on a beach where yours are the only footprints. No blaring music, no overbuilt resorts, no endless rows of Instagram influencers posing on the same swing.
Instead, you’ll find quiet Thailand islands where the rhythm of life slows down. You’ll wake up to the sound of the waves not traffic. Sip coconut water from a hammock while watching local fishermen cast their nets. Dine on freshly grilled seafood at a beach shack run by a family who’s lived there for generations.
These aren’t fantasy scenes. They’re real places. And in this guide, we’re revealing them all.
We’ve handpicked the most beautiful Thailand’s Secret Islands for 2025 places that are still largely undiscovered, free from overtourism, and bursting with local character. You’ll learn how to reach them, when to go, where to stay, and what makes each island special.
Why Now?
Thailand is seeing a wave of new tourism trends in 2025, with an emphasis on sustainability, cultural authenticity, and lesser known destinations. This means the best time to explore these Thailand’s Secret Islands is right now before the word gets out.
If you’ve ever searched for:
- “Thailand less touristy islands”
- “Authentic Thailand islands for island hopping”
- “Off the beaten path Thailand beaches”
… then this is the guide made just for you.
Welcome to a side of Thailand most travelers never see. This is your passport to paradise without the crowds and it starts here.
Table of Contents
Top 9 Thailand’s Secret Islands to Visit in 2025
Each island below has been carefully selected for its seclusion, unique charm, and accessibility in 2025. From remote snorkeling spots to islands with no roads, these are Thailand’s best kept secret islands.
Koh Phayam (Ranong)
An island frozen in time — quiet, natural, and crowd free.
Why It’s Special:
Koh Phayam is like stepping into a postcard from Thailand’s past. With no cars on the island, locals and visitors get around on bicycles or scooters. The beaches are long and largely empty, the waters are clean and swimmable, and the vibe is calm and slow. It’s the perfect escape for travelers looking for quiet Thailand islands without big resorts or noisy beach parties. You’ll find reggae bars, eco bungalows, and the kind of relaxed lifestyle that’s rare in Thailand’s more famous islands.
Location:
Located in the Andaman Sea, near Thailand’s border with Myanmar. It’s part of Ranong province, which remains largely untouched by mass tourism.
How to Reach:
Fly to Ranong from Bangkok (1.5 hrs) → Taxi to Ranong Pier (20 mins) → Ferry to Koh Phayam (approx. 1.5 hrs or 45 mins by speedboat).
Best For:
Backpackers, surfers, and digital detoxers who want peace, nature, and a break from city life.
Don’t Miss:
• Ao Yai Beach – Great for surfing and sunsets
• Buffalo Bay – Calm waters and relaxed vibes
• Glowing plankton at night
• Fresh seafood BBQ at local beach shacks
Quick Look Table: Koh Phayam
| Category | Details |
|---|---|
| Closest Airport | Ranong Airport |
| Internet | Limited, improving in 2025 |
| Ideal Duration | 3–4 days |
| Budget Stay | Bamboo Bungalows (from ₹800/night) |
| Top Activity | Surfing, hammock chilling |
Koh Yao Noi (Near Phuket)
A peaceful escape just minutes from Phuket — but a world away in feel.
Why It’s Special:
Though just a short boat ride from the busy hubs of Phuket and Krabi, Koh Yao Noi feels refreshingly untouched. Life here moves slowly through rice paddies, rubber plantations, and fishing villages where traditions are still alive. The island offers a perfect mix of nature, culture, and tranquility, making it one of the best Thailand’s Secret Islands for those seeking a genuine local vibe without the crowds. It’s quiet, scenic, and deeply rooted in Thai culture ideal for travelers looking to unplug.
Location:
In the middle of Phang Nga Bay, between Phuket and Krabi.
How to Reach:
Take a speedboat from Phuket’s Bang Rong Pier (approx. 45 minutes). Boats also run from Krabi.
Best For:
Couples, honeymooners, slow travelers, nature lovers, and photographers looking for lush landscapes and calm waters.
Don’t Miss:
• Kayaking through mangroves and limestone cliffs
• Visiting local markets and learning Muay Thai with island instructors
• Exploring the island by bicycle for scenic coastal and inland views
• Sunset over the Phang Nga limestone karsts
Also Read: Hot Weather, Hotter Deals: Here’s Why You Should Visit Turkey in July
Koh Mak (Trat)
A model of sustainable tourism with slow rhythms and zero jet skis.
Why It’s Special:
Koh Mak is one of the few islands in Thailand that has managed to grow without losing its soul. Family owned and proudly independent, the island is dotted with coconut plantations, quiet beaches, and a strong commitment to eco friendly tourism.
You won’t find beach raves or banana boats here instead, you’ll discover bike paths, snorkel coves, and friendly locals who genuinely care about the environment. It’s clean, safe, and beautifully slow the perfect destination for those who love Thailand’s less touristy islands with a conscious twist.
Location:
In the Gulf of Thailand, just south of Koh Chang, within Trat Province.
How to Reach:
Take a bus or domestic flight to Trat, followed by a boat or speedboat from Laem Ngop Pier. Travel time from the pier to the island is about 45–60 minutes.
Best For:
Sustainable travelers, families with kids, couples, and anyone who enjoys slow travel and meaningful experiences.
Don’t Miss:
• Snorkeling trips to nearby Koh Kradat, known for its deer and coral reefs
• Island wide cycling paths — perfect for exploring on two wheels
• Local workshops in tie dye, crafts, and Thai cooking
• Quiet beach cafes with beanbags, smoothies, and handmade products
2025 Travel Tip:
The island still has dirt roads in many parts. Avoid the rainy season (May–October) if you’re not into muddy adventures. Dry season (Nov–Apr) offers clearer waters and easy island hopping to nearby spots like Koh Kood.
Koh Jum (Krabi)
A calm, coastal hideaway between two tourist hotspots.
Why It’s Special:
Koh Jum feels like a gentle pause between the busier scenes of Krabi and Koh Lanta. It’s a peaceful island dotted with small Muslim villages, quiet beaches, and welcoming locals. You won’t find party crowds or beach clubs here instead, you’ll get off grid simplicity, raw nature, and an atmosphere that invites you to slow down. It’s one of the best crowd free Thailand’s Secret Islands for travelers who just want to relax, read, and take it easy.
How to Reach:
Catch a ferry or longtail boat from either Krabi (Laem Kruat Pier) or Koh Lanta. Travel time is about 1–1.5 hours depending on your starting point.
Best For:
Travelers seeking stillness, minimalism, and meaningful quiet especially solo visitors and couples who love the sound of waves more than nightlife.
Don’t Miss:
• Sunset at Ao Si Beach – golden skies and soft sands
• Long beach walks with hardly another soul in sight
• Light jungle treks and spotting hornbills or monitor lizards
• Simple Thai meals at local run beachfront cafés
2025 Travel Tip:
Koh Jum fits perfectly into a less crowded Thailand island hopping route. Use it as a serene break between the more active islands of the Andaman coast.
Koh Libong (Trang)
Thailand’s hidden marine sanctuary — quiet, wild, and full of life.
Why It’s Special:
If you’ve ever dreamed of spotting a dugong the gentle sea creature often called the “sea cow” in its natural habitat, Koh Libong is the place to go. It’s Thailand’s largest island in Trang province, yet remains remarkably under the radar. Unlike touristy beach hubs, Libong offers untouched coastlines, seagrass beds, and a protected ecosystem that makes it a haven for marine life and migratory birds. The vibe here is rustic and real, with villages focused on fishing, rubber tapping, and eco tourism.
How to Reach:
Fly or take a train to Trang, then head to Hat Yao Pier. From there, a longtail boat will take you to Koh Libong in about 30–40 minutes.
Best For:
Wildlife lovers, birdwatchers, scuba divers, and travelers who want to experience Thailand’s natural beauty without any crowds.
Don’t Miss:
• Dugong spotting tours – best done with local guides during high tide
• Birdwatching – home to rare species like the Nicobar pigeon and migratory shorebirds
• Sunset strolls on Haad Yao Beach, with its dramatic rock formations
• Visiting the Bat Cave viewpoint for sweeping views over the island
2025 Travel Tip:
Choose a local homestay or eco lodge to support the island’s conservation and community efforts. Many are now part of responsible tourism programs helping protect the dugong habitat.
Koh Lao Liang (Trang)
A seasonal paradise for campers, climbers, and solitude seekers.
Why It’s Special:
Koh Lao Liang is not your typical island getaway it’s more like an off grid escape into raw nature. Open only during the dry season (November to May), this private island is part of a protected marine park and offers a unique experience: camping right on the beach, under towering limestone cliffs. With no permanent buildings and no crowds, it’s a dream for rock climbers, snorkelers, and those who just want to disconnect. Think of it as a popup island experience wild, beautiful, and fleeting.
How to Reach:
Fly/train/bus to Trang, then arrange a private boat transfer via your booked eco-camp (they usually handle all logistics). The ride takes about an hour.
Best For:
Adventure travelers, climbers, snorkelers, and couples looking for quiet and connection in nature.
Don’t Miss:
• Snorkeling straight off the beach vibrant coral and marine life
• Rock climbing routes suitable for all skill levels
• Paddleboarding and kayaking along dramatic limestone cliffs
• Stargazing with zero light pollution, the night sky is breathtaking
2025 Travel Tip:
Due to limited capacity (only a handful of tents available), early booking is essential. Camps are eco conscious and include tents with mattresses, meals, and equipment rentals in package deals.
Koh Sukorn (Trang)
A quiet island village where Thai traditions live on.
Why It’s Special:
Koh Sukorn isn’t about beaches lined with umbrellas it’s about authentic rural life by the sea. With no resorts, no beach bars, and no big crowds, this island offers a rare chance to see a real Thai community thriving in harmony with nature. You’ll pass rice fields, grazing buffaloes, and local families waving as you cycle by. Life here is slow, gentle, and incredibly welcoming making it one of the best Thailand’s Secret Islands for culture seekers and slow travelers.
How to Reach:
Head to Trang, then travel to Tasae Pier. From there, hop on a local longtail boat (20–30 minutes) to reach the island.
Best For:
Travelers who value local experiences, cultural immersion, and peaceful scenery especially couples, photographers, and solo wanderers.
Don’t Miss:
• Morning village walks through rice paddies and coastal paths
• Sunrise views over the Gulf of Thailand peaceful and dramatic
• Renting a bicycle to explore local life at your own pace
• Sampling home cooked Southern Thai dishes with your homestay host
2025 Travel Tip:
Several homestays now run on solar power and offer eco friendly accommodation. Staying in these supports local sustainability efforts while giving you a genuine connection to the island’s people and lifestyle.
Also Read: 25 Best Summer Tourist Places to Visit This Year
Koh Tarutao (Satun)
Untamed, historic, and hauntingly beautiful Thailand’s wildest island.
Why It’s Special:
Koh Tarutao is part of the Tarutao National Marine Park, and it’s unlike any other island in Thailand. Once used as a prison colony in the 1930s, it’s now a protected sanctuary where jungle covered mountains meet empty beaches, and nature completely dominates. With no luxury resorts, no shops, and barely any WiFi, this is a place for pure adventure ideal for those who love hiking, camping, and exploring forgotten places.
If you’re searching for remote Thailand islands that feel totally disconnected from the modern world, Koh Tarutao delivers.
How to Reach:
Take a bus or flight to Satun → Get to Pak Bara Pier → Board a speedboat (30–60 minutes depending on sea conditions). Boats generally operate between November and May.
Best For:
Hikers, campers, backpackers, and anyone fascinated by history or wilderness exploration.
Don’t Miss:
• Trekking to Ao Son Beach, a secluded paradise accessible only by foot or bike
• Camping in the jungle bring gear or rent it on the island
• Learning about its dark past as a prison island and pirate hideout
• Biking trails through dense forest and along untouched coastlines
2025 Travel Tip:
There are no convenience stores or restaurants, so bring your own food and snacks. The park has basic canteens and ranger stations, but they’re not always stocked plan ahead for a self sufficient stay.
Koh Kood (Trat)
Where gentle luxury meets untouched nature Thailand’s serene final frontier.
Why It’s Special:
Among Thailand’s hidden islands, Koh Kood stands out as the most scenic blend of comfort and seclusion. While it’s slightly more developed than others on this list, it still feels worlds away from the busy circuits of Koh Samui or Phuket. With lush rainforests, flowing waterfalls, and empty beaches, Koh Kood feels like a dream especially for those seeking beautiful quiet islands in Thailand that haven’t been overrun by tourism.
It’s the perfect destination for couples, honeymooners, and anyone craving a peaceful, slightly indulgent escape into nature.
How to Reach:
Fly to Trat Airport, then take a speedboat from Laem Sok Pier (about 90–120 minutes depending on weather and operator).
Best For:
Nature lovers, romantic travelers, and families wanting serenity with a touch of style.
Don’t Miss:
• A visit to Khlong Chao Waterfall cool freshwater dips in the heart of the jungle
• Sunset at Secret Sunset Beach (also known as Ao Tapao) often empty, always magical
• Kayaking through mangrove forests and snorkeling in crystal clear waters
• Exploring sleepy fishing villages and hidden coves by motorbike
2025 Travel Tip:
Many mid range eco resorts now offer combo packages that include kayaking, hiking, and community tours. These make for a great 2–3 day soft adventure itinerary without needing to plan everything separately.
Island Hopping Itinerary for 2025: Less-Crowded Route
Here’s a sample 10-day Thailand secret island itinerary for the crowd averse:
| Day | Island | Activities |
|---|---|---|
| 1-2 | Koh Phayam | Chill, surf, sunset |
| 3-4 | Koh Yao Noi | Cycling, local cooking class |
| 5-6 | Koh Libong | Dugong spotting, beach lounging |
| 7-8 | Koh Lao Liang | Camping, snorkeling, stargazing |
| 9-10 | Koh Kood | Waterfalls, kayak, romantic dinner |
Budget Overview: What to Expect (2025 Pricing)
| Item | Avg. Cost (₹ INR) | Notes |
|---|---|---|
| Island guesthouse (per night) | ₹800 – ₹2,500 | Budget to boutique eco-resorts |
| Meals (per day) | ₹500 – ₹1,000 | Seafood & Thai local dishes |
| Island Transfers | ₹300 – ₹1,000 | Ferries or longtail boats |
| Activities | ₹0 – ₹2,000 | Many nature-based = free |
| Total Daily Budget | ₹1,800 – ₹4,000 | Depending on comfort level |
Packing and Travel Tips for Remote Thailand Islands
Traveling to Thailand’s hidden islands is magical but a little prep goes a long way. These are off the grid destinations, so being self sufficient makes your journey smoother and more enjoyable.
Cash is King
Most of these remote Thailand islands don’t have ATMs, and even if they do, they might be unreliable or out of service. Small guesthouses, local eateries, and longtail boat operators almost always prefer cash. Carry enough Thai Baht to cover your accommodation, meals, transport, and small emergencies. Credit card acceptance is rare outside of the more developed islands.
Dry Bags Are a Lifesaver
Whether you’re hopping between islands or just boarding a longtail boat, your gear will likely get splashed. A dry bag is essential to protect your electronics, passport, and clothes from sea spray, sudden rain, or beach landings. Many travelers also use it for day hikes to carry snacks, water, and a towel.
Don’t Forget the Bug Spray
Sandflies and mosquitoes can be persistent, especially around beaches during the early morning and sunset hours. Bring a strong mosquito repellent (preferably with DEET) or a natural citronella based spray. Wearing light, long clothing in the evening also helps especially on less developed islands where pest control is minimal.
Eco-Friendly Sunscreen is a Must
Standard sunscreens often contain chemicals like oxybenzone and octinoxate that damage coral reefs and marine life. Opt for a reef safe sunscreen that’s biodegradable and water resistant. It’s a small switch that makes a big difference, especially when snorkeling or swimming near fragile reefs.
Download Offline Maps
Internet on these islands is often slow, unreliable, or nonexistent especially once you’re away from your hotel. Before your trip, download offline maps (Google Maps or Maps.me) and save key locations like your resort, piers, ATMs, and beaches. Also, keep screenshots of ferry schedules and hotel bookings just in case.
Conclusion
In a world where travel often feels rushed and overdone, Thailand’s secret islands offer something rare places where nature, simplicity, and authenticity still define the experience. Whether it’s the barefoot charm of Koh Phayam, the raw wilderness of Koh Tarutao, or the quiet village life on Koh Sukorn, these islands invite you to slow down and explore a different side of Thailand.
These aren’t destinations built for mass tourism. They’re places where you’ll share meals with locals, hear the ocean instead of loudspeakers, and experience beaches where you might be the only one there. And in 2025, as more travelers search for less crowded, more meaningful adventures, these Thailand’s Secret Islands are exactly where you’ll want to be.
So if you’re craving open skies, hidden coves, and a journey that feels real not rehearsed it’s time to step off the tourist trail and onto a quiet beach with no name.
Also Read: Top 10 Visa Free Summer Destinations for Indian Travellers
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Frequently Asked Questions
What are the best secret islands to visit in Thailand in 2025?
Some of the best lesser-known islands include Koh Phayam, Koh Yao Noi, Koh Mak, Koh Jum, Koh Libong, Koh Sukorn, and Koh Tarutao. These islands offer unique experiences from wildlife spotting and jungle camping to peaceful beaches and village life all far from the usual tourist trails.
Are these islands safe for solo travelers or couples?
Yes, most of these islands are very safe and welcoming to solo travelers, couples, and even families. The local communities are friendly, and crime rates are extremely low. Just follow basic travel precautions like keeping valuables secure and planning transport in advance.
Can I use my credit card on these secret islands?
In most cases, no. Many secret and remote islands in Thailand do not have ATMs, and credit card acceptance is limited. It’s always a good idea to bring enough Thai Baht in cash before arriving on the island, especially for food, transport, and accommodation.
What’s the best time of year to visit Thailand’s hidden islands?
The ideal time is during the dry season from November to April, when the sea is calm and skies are clear. Avoid the monsoon season (May to October), especially for islands with unpaved roads or those only accessible by boat, like Koh Lao Liang or Koh Libong.
Will I have mobile network or WiFi on these islands?
Some islands like Koh Phayam now have Starlink or 4G coverage, especially near main beaches or guesthouses. Others may have limited or no internet, which is part of their charm. It’s best to download offline maps and important documents before your trip.