Similan Islands
The Similan Islands are one of Thailand’s most beautiful island destinations and a must-visit for travellers staying in Phuket who want crystal-clear water, white-sand beaches, and some of the best snorkelling and diving in the country.
Located in the Andaman Sea, northwest of Phuket, this protected island group is famous for its untouched nature, colourful coral reefs, and dramatic granite boulders rising from the sea.
What Are the Similan Islands?
The Similan Islands are an archipelago of 11 islands located approximately 70 kilometres from the mainland province of Phang Nga. The islands are part of Mu Ko Similan National Park, a protected marine area created to preserve the region’s unique landscapes and underwater ecosystems.
The name “Similan” comes from the Yawi Malay word “sembilan”, meaning nine, as the original park included nine main islands. Two additional islands were later added to the national park area.
The islands are best known for:
- Clear turquoise waters with visibility often reaching 20–30 metres
- White sandy beaches surrounded by tropical forests
- World-class snorkelling and scuba diving locations
- Large granite rock formations and viewpoints
- Rich marine life including sea turtles, reef fish, and occasionally manta rays
Most Popular Similan Islands
- Island 8 (Koh Similan) – Home to the famous Sail Rock viewpoint and one of the best panoramic views in the area.
- Island 4 (Koh Miang) – Known for beautiful beaches, walking trails, and excellent snorkelling spots.
- Island 9 (Koh Ba Ngu) – Popular for diving and underwater scenery.
How to Visit the Similan Islands from Phuket
Most travellers visit the Similan Islands on an organised day tour from Phuket. Since the islands are located far from Phuket and access is controlled by national park regulations, independent travel is possible but not practical for most tourists.
Similan Islands Tour Options
The most common option is a speedboat day trip. A typical tour includes:
- Hotel pickup in Phuket
- Transfer to the pier in Phang Nga (usually around 1.5–2 hours)
- Speedboat journey to the islands (around 70–90 minutes)
- Snorkelling stops
- Beach time and swimming
- Thai lunch
- National park fees
- Return transfer to your hotel
Most tours start very early, often between 5:00 and 6:30 AM, because the journey is long and operators want to arrive before the busiest hours.
Common pickup areas in Phuket include:
Similan Islands Tour Costs
The price of a Similan Islands tour from Phuket depends on the boat type, group size, and what is included.
Typical prices:
- Budget group speedboat tour: around 2,000–3,000 THB per person
- Premium speedboat tour: around 3,000–5,000 THB per person
- Private charter: usually 25,000+ THB depending on boat size
Most tours include:
- Hotel transfers
- Breakfast snacks and drinks
- Lunch
- Snorkelling equipment
- Tour guide
- National park entrance fee
Be careful with very cheap tours. Lower-priced operators may use larger boats, spend less time at each location, or have crowded schedules.
Best Time to Visit the Similan Islands
The Similan Islands are seasonal and are usually open from 15 October until 15 May each year. The park closes during the monsoon season to protect the environment and because sea conditions can become dangerous.
November to April – Best Overall Period
This is the ideal season for visiting the Similan Islands.
- Calm seas
- Excellent visibility for snorkelling and diving
- Sunny weather
- Comfortable temperatures
December to February is the busiest period because it matches Phuket’s peak tourist season.
May to October – Low Season
During the southwest monsoon, the islands are normally closed. Heavy waves and unpredictable weather make boat trips unsafe.
Similan Islands vs Phi Phi Islands
Many visitors wonder whether they should visit the Similan Islands or Phi Phi Islands during their Phuket holiday. Both destinations are beautiful but offer different experiences.
| Similan Islands | Phi Phi Islands | |
|---|---|---|
| Best for | Snorkelling, diving, nature | Scenery, beaches, nightlife |
| Water quality | Excellent | Very good |
| Crowds | Less developed | More touristy |
| Distance from Phuket | Further | Closer |
If your priority is underwater scenery and untouched nature, the Similan Islands are usually the better choice. If you want famous viewpoints, dramatic limestone cliffs, and a more social atmosphere, Phi Phi may suit you better.
Similan Islands Travel Tips
- Bring sunscreen and a hat: There is limited shade on many beaches, and the tropical sun is strong.
- Wear comfortable swimwear: Most of the day involves swimming, snorkelling, and walking on beaches.
- Bring seasickness tablets: The speedboat ride can be rough, especially during windy periods.
- Start early: Early tours often have better weather and fewer crowds.
- Bring cash: Small shops and local vendors may not accept cards.
- Protect marine life: Avoid touching coral and do not damage underwater ecosystems.
Tips & Recommendations
The Similan Islands are absolutely worth visiting, but choosing the right tour makes the experience much better. Avoid focusing only on the cheapest option and look for operators with good reviews, smaller groups, and modern boats.
If you are travelling during December, January, or February, book your tour in advance as popular operators can fill up quickly.
For the best experience, choose a weekday trip if possible. Weekends and public holidays tend to be busier with both tourists and local visitors.
If you love diving, consider booking a dedicated diving trip instead of a standard snorkelling tour. The Similan Islands are considered one of Thailand’s top diving destinations.
Similan Islands Location & Map
FAQ about Similan Islands
How far are the Similan Islands from Phuket?
The Similan Islands are around 100–120 kilometres from Phuket depending on your departure point. The total journey usually takes around 3–4 hours each way, including the land transfer and speedboat ride.
Can you visit the Similan Islands from Phuket in one day?
Yes, most tourists visit the Similan Islands as a full-day trip from Phuket. Tours usually leave early in the morning and return in the evening.
How much does a Similan Islands tour from Phuket cost?
A typical Similan Islands tour costs around 2,000–5,000 THB per person depending on the boat type, group size, and what is included. Premium tours and private charters are more expensive.
When are the Similan Islands closed?
The Similan Islands are generally closed from around mid-May until mid-October every year due to monsoon weather, rough sea conditions, and conservation efforts.
Are the Similan Islands good for snorkelling?
Yes, the Similan Islands are among the best snorkelling destinations in Thailand. Visitors can enjoy clear water, colourful coral reefs, tropical fish, and the chance to see sea turtles.
Is the Similan Islands trip suitable for children?
Yes, many families visit the Similan Islands. However, the long travel time and speedboat ride can be tiring for very young children, especially those who struggle with motion sickness.
Do I need to book a Similan Islands tour in advance?
During Phuket’s high season, especially from December to February, it is recommended to book your Similan Islands tour a few days in advance. During quieter months, last-minute bookings are usually easier.
Are there hotels on the Similan Islands?
Accommodation options on the Similan Islands are very limited. Most visitors explore the islands on day trips from Phuket, although basic camping and park accommodation may sometimes be available during the open season.
