Similan Islands Open on October 15: Start of the New Tourist Season
Every year, travelers from around the world eagerly await mid-October — that’s when one of Thailand’s most beautiful marine national parks, the Similan Islands, reopens its gates. In 2025, the official opening date of the protected area is October 15. This event marks the beginning of the long-awaited high season of excursions, when visitors can enjoy the emerald sea, white sandy beaches, and a unique underwater world.
Similan Islands: The Pearl of the Andaman Sea
The Similans are an archipelago of 11 islands located about 70 kilometers off the coast of Phang Nga Province, northwest of Phuket. They are part of the Mu Ko Similan National Marine Park, renowned for its natural beauty and unique ecosystem.
Key features of the Similan Islands:
- crystal-clear waters with visibility up to 30 meters;
- coral reefs rich in marine flora and fauna;
- rare marine species, including sea turtles and whale sharks;
- picturesque beaches with soft white sand;
- giant granite boulders forming whimsical shapes — the archipelago’s signature feature.
It’s no coincidence the Similans consistently appear among the top 10 diving destinations in the world and are a must-visit for those vacationing in Phuket or Khao Lak.
Why Are the Islands Closed for Half a Year?
Many tourists wonder why access to the Similan Islands is limited. The season runs only from October 15 to May 15, and for the rest of the year the archipelago is closed to visitors.
Reasons for this decision:
- during the rainy season, the sea becomes unpredictable and trips are unsafe;
- the closure allows nature to recover and the ecosystem to rest from tourist impact;
- these measures help preserve corals, beaches, and marine life populations.
Thanks to strict protection by the national park, the Similans remain pristine and delight guests with untouched nature.
When Is the Best Time to Visit the Similan Islands?
Although the islands open on October 15, peak visiting time is from November to April. During this period:
- the sea is calm — ideal for swimming and snorkeling;
- underwater visibility is at its maximum;
- the chance of rain is minimal and the sun makes the sea especially bright and blue.
October and November are considered the start of the season, so crowds are smaller than in December–January. A great choice for those who want to enjoy nature without the masses.
What Tours Are Available?
With the season opening, tour companies offer a wide range of trips:
- Day trips - depart from Phuket or Khao Lak in the morning, visit 2–3 islands, snorkeling and beach time.
- Multi-day cruises - for diving enthusiasts who want to explore the underwater world in depth.
- rivate tours - charter a catamaran or speedboat for a personalized program.
A standard itinerary usually includes stops at Island No. 4 (Koh Miang), Island No. 8 (Koh Similan with the famous «Sailing Rock»), and several snorkeling spots.
What Should You Bring?
To make your Similan trip a pleasure, it’s best to prepare in advance:
- sunscreen and a hat;
- swimwear, towel, and light clothing;
- snorkeling mask (if you prefer not to use rental gear);
- photo or video camera for underwater shooting;
- comfortable footwear (reef shoes) for walking on the islands.
Important: removing shells or corals and littering are strictly prohibited in the park. These rules help preserve the Similans’ beauty.
Why Visit in October?
The October 15 opening is a special moment:
- the islands welcome tourists after a long break;
- nature is refreshed and especially beautiful;
- beaches are not yet crowded;
- tour prices at the start of the season are often lower than during the winter holidays.
It’s an ideal time for photographers, divers, and anyone seeking a peaceful escape.
Conclusion
October 15 marks the opening of the Similan Islands and the long-awaited start of the new tourist season. From now until mid-May, travelers can once again enjoy the archipelago’s enchanting beauty, go snorkeling and diving, or simply spend a day on paradise beaches.
If you are planning a holiday in Phuket or Khao Lak, be sure to include the Similans in your itinerary. The trip will bring vivid emotions, unforgettable views, and the feeling of a true tropical paradise.
Don’t miss the chance to be among the first guests of the new season to see the Similan Islands in all their glory!
