Planning a diving holiday in Thailand starts here. Discover the country’s most popular dive regions, compare trusted dive centers, browse liveaboards and find the best dive deals. OnlineDivecenter brings everything together to help you plan your next dive trip in Thailand.
From Koh Tao in the Gulf of Thailand to Phuket and the islands of the Andaman Sea, Thailand has plenty to explore underwater. Find the dive region that fits your next trip.
Koh Samui | Koh Phangan | Koh Phi Phi | Pattaya | Rayong | Koh Chang | Chumphon
Discover recommended dive centers in Thailand. Find the right dive center for your next dive, from courses and fun dives to local dive experiences.
Find recommended dive deals across Thailand, from dive packages and courses to special offers from local dive centers.
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Explore recommended liveaboards in Thailand and discover dive trips that take you beyond the coast to some of the country’s best-known dive areas.
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Thailand offers diving on both the Andaman Sea and the Gulf of Thailand, with dive regions spread across much of the country. You’ll find coral reefs, wrecks, pinnacles and a wide variety of marine life, with diving available for beginners as well as experienced divers.
Conditions and seasons vary between regions, which means there is almost always somewhere to dive in Thailand. Choosing the right region depends on when you travel, what you want to see and the type of diving you’re looking for.
Thailand can be dived throughout much of the year, but the best time depends on the region. The Andaman Sea and Gulf of Thailand have different seasons, making it worth checking where to dive before planning your trip.
Andaman Sea — November to April
Phuket, Khao Lak, Krabi, Koh Lanta and Koh Lipe are generally at their best from November to April, when conditions are typically calmer and drier. Some offshore marine parks have seasonal closures outside the main diving season.
Gulf of Thailand — February to September
Around Koh Tao, Koh Samui and Koh Phangan, good diving conditions often extend through much of spring and summer. This makes the Gulf a useful alternative when the Andaman coast is in its wetter monsoon period.
Diving conditions in Thailand vary by region and season, but warm water makes diving comfortable throughout the year. Water temperatures are usually around 27–30°C, with visibility ranging from 10 to 30 metres depending on location and conditions.
Many dive sites offer relaxed conditions suitable for beginners, while deeper sites, offshore pinnacles and areas with stronger currents provide more challenging diving for experienced divers.
Thailand’s waters are home to a wide variety of marine life, from colourful reef fish, moray eels and nudibranchs to turtles, rays and reef sharks. The species you encounter depend on the region, dive site and season.
Larger marine life can also be encountered at some of Thailand’s offshore dive sites. Whale sharks and manta rays are among the most sought-after sightings, but encounters are never guaranteed.
Planning a dive trip to Thailand starts with choosing the right region. The Andaman Sea and Gulf of Thailand have different dive seasons, and the distances between Thailand’s dive destinations can be considerable.
Most regions offer day trips from local dive centers, while liveaboards provide access to more remote dive areas. Explore the regions above to find the destination that fits your travel dates and diving plans.
The best time depends on the region. The Andaman Sea generally has its best diving conditions from November to April, while the Gulf of Thailand has a longer season that often runs from February to September.
Yes. Diving is possible throughout much of the year in Thailand. Conditions vary between the Andaman Sea and Gulf of Thailand, so choosing the right region for your travel dates is important.
Thailand has many different dive regions, each with its own type of diving. Koh Tao, Phuket, Khao Lak, Krabi, Koh Lanta and Koh Lipe are among the best-known destinations. The right region depends on the season and the type of diving you are looking for.
Yes. Thailand is a popular destination for learning to dive, with many dive centers offering introductory dives and certification courses. There are also plenty of relaxed dive sites suitable for newly certified divers.
Not always, but booking ahead can be useful during busy periods, especially for dive courses, liveaboards and trips with limited availability. Contacting a local dive center before your trip also gives you the chance to check current conditions and dive schedules.
Water temperatures are warm throughout the year and are usually around 27–30°C. Temperatures can vary slightly by region and season.
