Thailand

Country Name: Kingdom of Thailand

Capital City: Bangkok

Population:Approximately 71.89 million (2024 est.)

Official Language: Thai

Currency: Thai Baht (THB)

Time Zone: Indochina Time (ICT), UTC +7

Tropical beach with boats and lush cliffs at sunset
Scenic ocean view with island and boat
Aerial view of boats on clear turquoise waters
Ornate Thai temple under blue sky

Diving Overview

Thailand is a renowned diving destination, offering diverse underwater environments and rich marine biodiversity. The country features crystal-clear waters, vibrant coral reefs, and numerous wrecks, providing excellent diving opportunities for all skill levels. Popular dive sites are located in the Andaman Sea and the Gulf of Thailand, attracting divers from around the world.

  • Number of Dive Sites: Over 100. Numerous dive sites across both the Andaman Sea and the Gulf of Thailand.
  • Types of Diving: Reef, wreck, drift, wall, and muck diving.
  • Marine Biodiversity Highlights: Whale sharks, manta rays, sea turtles, barracudas, and a variety of colorful reef fish.
  • Average Water Temperatures: 27-30°C (81-86°F).
  • Visibility Range: 15-40 meters (49-131 feet)​

Important Information

Optimal Dive Seasons

The best diving conditions are typically from November to April, offering calm seas and excellent visibility.

Major Airports

Suvarnabhumi Airport (Bangkok), Don Mueang International Airport (Bangkok), Phuket International Airport

The Travel Tip

A 3mm wetsuit is generally sufficient for most dive sites in Thailand, but a thicker suit may be needed for deeper dives or cooler seasons.

Weather Patterns

Thailand has a tropical climate with a rainy season from mid-May to September and a dry, cooler season from November to mid-March, while the southern region remains hot and humid year-round

Internal Transportation

Options include domestic flights, buses, trains, and ferries, providing comprehensive connectivity across the country.

Attractions

Key attractions include the Grand Palace and Wat Phra Kaew in Bangkok, the beaches of Phuket and Krabi, the ancient city of Ayutthaya, and the cultural heritage sites in Chiang Mai​

Top Dive Regions

Thailand’s top dive regions offer a diverse range of underwater experiences, each with unique attractions and abundant marine life. The Similan Islands, located in the Andaman Sea, are renowned for their stunning underwater topography, including dramatic rock formations, vibrant coral reefs, and clear waters that provide excellent visibility. The Surin Islands, also in the Andaman Sea, are celebrated for their rich marine biodiversity, making them a haven for divers seeking thriving coral gardens and a variety of marine species. Phuket serves as a gateway to numerous dive sites, offering everything from coral reefs to wrecks and underwater rock formations, making it a popular destination for divers of all levels. Koh Tao, in the Gulf of Thailand, is famed for its affordable diving courses and vibrant marine life, making it a favorite among both beginner and experienced divers. These regions collectively offer some of the best diving experiences in Thailand, attracting divers from around the world to explore their underwater treasures​

Similan Islands

Known for their stunning underwater topography, diverse marine life, and excellent visibility, the Similan Islands offer some of the best diving in Thailand.

Surin Islands

Famous for the rich marine biodiversity and vibrant coral reefs, the Surin Islands are a haven for divers looking to explore thriving underwater ecosystems.

Phuket

Offers a variety of dive sites including coral reefs, wrecks, and underwater rock formations, making it a popular base for diving trips to nearby islands.

Koh Tao

Renowned for its affordable diving courses and vibrant marine life, Koh Tao is a favorite destination for both beginner and experienced divers

Marine Life

Thailand’s waters are home to an incredible diversity of marine life, making it a top destination for divers and marine enthusiasts. The Andaman Sea and the Gulf of Thailand feature vibrant coral reefs inhabited by a myriad of species such as parrotfish, angelfish, and butterflyfish. Larger marine animals, including whale sharks and manta rays, are frequently spotted in regions like the Similan and Surin Islands. The waters around Koh Tao and Phuket are known for encounters with sea turtles, reef sharks, and barracudas. The rich biodiversity also includes smaller, colorful species like nudibranchs, seahorses, and anemonefish, making the reefs bustling with life. Additionally, unique marine creatures such as cuttlefish, octopuses, and moray eels inhabit the diverse underwater landscapes, providing fascinating sights for divers and snorkelers alike.

Common Species: Whale sharks, manta rays, sea turtles, reef sharks, parrotfish, angelfish, butterflyfish, nudibranchs, seahorses, and anemonefish.

Seasonal Highlights: Whale sharks are most commonly seen from February to May, while manta rays are frequently encountered year-round in specific locations like the Similan and Surin Islands.​