Koh Yao Yai is a remarkable diving destination nestled in Thailand's Phang Nga Bay. Known for its stunning marine biodiversity, this island offers divers a unique opportunity to explore vibrant coral reefs, diverse marine life, and crystal-clear waters. With options for all experience levels, from beginners to advanced, Koh Yao Yai is a haven for scuba enthusiasts seeking both adventure and tranquility. Located just a short boat ride from the bustling tourist hubs of Phuket and Krabi, Koh Yao Yai boasts unspoiled beaches and a laid-back atmosphere. This serene setting provides the perfect backdrop for unforgettable underwater exploration. From the shallow reefs teeming with colorful fish to deeper dives where larger marine species reside, this destination truly offers something for everyone. Whether you're a seasoned diver or just starting out, Koh Yao Yai promises an exceptional diving experience amid some of Thailand's most breathtaking landscapes.
Last updated: 2 yr. ago - Apr 25, 2025
Dive Destination Overview
Depth
10m - 30m
Water Temperature
27 °C - 30 °C
Visibility
15 - 30m
Experience Level
Beginner
Intermediate
Advanced
Surface Conditions
Calm
Choppy
Currents
Calm
Gentle
40 Dive sites near Koh Yao Yai
Maya Corner
Homerun Reef
Bungalow Bay
Koh Bida Nok
Anemone Reef
Stone Coral Garden
Koh Hey/Coral Bay
Bay 2 Racha Yai
Shark Point (Hin Bida)
Nakaley
Garang Heang
Koh Bida Nai
Whale Shark Wall, Ko Phi Phi
Lucy's Reef
Tai Pau
Kamala Rock
Siam Bay
Palong Bay
Kata Beach South Reef
Ao Sane
Koh Doc Mai
Staghorn Reef
Tin Lizzy (Wreck)
Malong Bay/Turtle Rock
Koh Racha Yai
Viking Cave
Mushroom Rock
Yanui Beach
RTN Kled Gaeow (Wreck)
Shark Point
Maya Bay
Kata Beach North Reef
Koh Waeo South
Bay 3, Racha Yai
Ayara Bay
Bay 1 Racha Yai
Koh Waeo North/Banana Rock
King Cruiser
The Jetty
Karon cubes
Table of Contents
Show MoreOverview of Koh Yao Yai
Koh Yao Yai is an idyllic island located in the Phang Nga Bay of Thailand, known for its stunning aquamarine waters and rich marine life. This hidden gem, less commercialized than its neighboring islands, provides an excellent diving escape for both beginners and experienced divers. With various dive sites around the island, you can immerse yourself in a world of vibrant coral reefs, schools of tropical fish, and perhaps even a glimpse of more majestic marine creatures.
Best Dive Sites
The island features several renowned dive sites, including:
- Koh Nok: This site is famous for its clear waters and thriving marine ecosystems, making it a perfect spot for divers to witness a colorful array of marine life.
- Koh Yao Noi: An extension of the diving opportunities, it consists of shallow reefs suitable for beginners and deeper areas for those seeking adventure.
- The Pinnacles: For advanced divers, this site offers deeper waters where you may encounter larger pelagic fish and unique underwater formations.
Conditions and Experience
Diving in Koh Yao Yai typically features calm waters, although conditions can vary. Visibility ranges generally from 15 to 30 meters, providing divers with excellent sightlines to enjoy the rich underwater environment. Water temperatures are warm year-round, averaging between 27°C and 30°C (81°F - 86°F).
Why Choose Koh Yao Yai?
What sets Koh Yao Yai apart is its unspoiled beauty and peaceful atmosphere, making it ideal for those looking to escape the crowds. Not only do divers have the chance to explore exceptional underwater sights, but they can also enjoy the island's lovely beaches, delectable local cuisine, and vibrant culture. After a day of diving, relax on the tranquil shores or explore traditional villages.
Plan Your Visit
To fully experience the magic of Koh Yao Yai, plan your trip around the dry season, which typically runs from November to April. This period offers the best weather and diving conditions. Accessible by ferry or speedboat from Phuket or Krabi, it provides a quick and scenic journey to adventure.