The Gulf of Thailand encompasses the coasts of Thailand, Cambodia, Vietnam, and Malaysia, and many of the most stunning places in Southeast Asia. In this area, not far from one another, are three of Thailand’s most famous islands: Koh Samui, Koh Phangan, and Koh Tao.
If you’re planning a trip to Thailand, it’s almost unthinkable not to visit at least one of these three islands. In our case, we spent one day in Koh Samui, three days in Koh Phangan, and two days in Koh Tao. I also had the chance to return to Koh Tao in 2024.
This is the story of my experience exploring the islands of the Gulf of Thailand, I hope it helps you on your own adventure through Thailand. Let’s begin:
1. Gulf of Thailand: The beaches of Koh Samui
After a few days relaxing on the famous and spectacular Koh Phi Phi, we headed to the Gulf of Thailand islands. We spent one night in Krabi, specifically in the Ao Nang area, which felt too touristy. The next day, we took a bus and boat to Koh Samui, Thailand’s second-largest island.
We only stayed for a day and a half, in the busiest area of the island. We found a small hotel for just 5 euros per night—50 meters from the beach and 5 minutes from the clubs. A total bargain! Koh Samui felt beautiful, with great beaches and a lively atmosphere, but we had a feeling the other two islands might be even better.
If you’re looking for good connections, restaurants, markets, and a more cosmopolitan vibe, Koh Samui is a great base. Besides its beaches like Chaweng or Lamai, you can enjoy Buddhist temples, waterfalls, and excursions to nearby parks like Ang Thong Marine Park.
2. Gulf of Thailand: Koh Phangan Island and the Full Moon Party
What is Koh Phangan like and where to stay?
We arrived in Koh Phangan on a full moon night, just in time for the world-famous Full Moon Party.
During this time, it’s essential to book accommodation in advance. We had to split our group in two due to the lack of availability. It was the only time in our trip we needed to pre-book a hotel.
Xavi and I stayed in a bungalow on a picture-perfect beach, later we found out it was one of the best beaches on the island, Haad Salad Beach. We spent three days there mixing beach time, hammock naps, and a motorbike tour around the island.
If you’re into party tourism, Koh Phangan is known for its Full Moon Party, but also has quiet spots like Haad Yuan or Bottle Beach. Exploring by scooter reveals hidden gems and scenic viewpoints.
The Full Moon Party: advices
During the Full Moon Party, we barely stayed together, it’s so crowded and wild that you often get separated. But that’s part of the fun, you meet new people and keep partying.
Safety tips:
- Don’t jump the fire rope if you’re drunk, serious burns are common.
- Be cautious with Mushroom Shakes, taking too much can ruin your night.
- Don’t fall asleep on the beach, there are cases of theft, and in extreme situations, assaults.
Check out this video of the Full Moon Party to get an idea. We’ll always remember Koh Phangan as an amazing island with a crazy party.
3. Gulf of Thailand: The wonderful Koh Tao Island
Our final stop (and everyone’s favorite) was the beautiful Koh Tao. It’s the second most popular place in the world (after Australia) to get scuba diving certified.
If you’re into diving, Koh Tao is the perfect place to get your PADI certification at a low price. The underwater visibility and marine life make it one of the best diving spots in Asia. Book early during high season (December–March and July–September).
On our first visit, we did a snorkeling tour through stunning coral reefs full of colorful fish. If you go to Shark Bay, you might even see small sharks.
On our second day, we took a traditional Thai boat for 500 baht (15 euros) to the incredible island of Nang Yuan, a postcard-perfect destination with white sand, crystal-clear water, and a panoramic viewpoint. We fell in love instantly.
Every night back in Koh Tao, we enjoyed some of the best sunsets I’ve ever seen and went out to enjoy the island’s fun nightlife. There are also viewpoints reachable by short treks in the Koh Tao mountains. No wonder this island is so popular.
How to return to Bangkok from Koh Tao
We left the Gulf of Thailand in awe of everything we had experienced. From Koh Tao, you can buy a return ticket to Bangkok from any travel agency or directly at the pier (the cheapest option).
We took a ferry to Chumphon and then a bus to Bangkok. The price includes everything, and the logistics are very well organized.
The ticket costs 1,225–1,525 THB (about €35–45) and the trip takes around 10 hours and 15 minutes, departing at 10:15 AM and arriving in Bangkok around 8:30 PM. It’s operated by Lomprayah High Speed Ferries.
Practical Tips to Make the Most of Your Trip
To get the most from Koh Samui, Koh Phangan, and Koh Tao, it’s important to plan transportation well. Ferries operate frequently, but in high season (November to April), book tickets in advance. Some companies offer combo packages with transport and accommodation.
The best time to visit is December to April, dry and sunny weather. Still, each island has a microclimate, so check the local forecast. Avoid monsoon season to fully enjoy the beaches and activities.
Must-Have Experiences on Each Island
Aside from the Full Moon Party, there are other great activities:
- In Koh Samui: visit the Wat Phra Yai (Big Buddha Temple) and Ang Thong Marine Park, ideal for kayaking and hiking.
- In Koh Tao: beyond diving and snorkeling, you can hike to viewpoints like John-Suwan Viewpoint and discover secluded beaches.
Travel to Thailand: Other Destinations
If you’re planning your trip, check out:
- Travel tips for Thailand
- My post on Chiang Mai, the city of temples
- 14-Day Thailand Itinerary: the most spectacular places
I hope this guide to the islands of the Gulf of Thailand has been helpful. Feel free to comment, rate, or share if you found it useful. Have a great trip and enjoy the Thai islands!
