Earn Your Open Water Diver Course in Koh Tao

SSI Open Water Diver

Learn to scuba dive in Koh Tao with the SSI Open Water Diver Course. In just 2.5 days, you’ll train with expert instructors, complete four ocean dives, and earn your certification to dive worldwide up to 18m.

Level

Beginner

Course

Duration

2.5

Days

Max Depth

18

Meters

Cost

Original price was: ฿11,000.Current price is: ฿9,500.

Thai Baht

Sale price valid for Activity Dates from 6 November 2025 to 18 December 2025.

The Learning Experience

Embark on your scuba journey with the Open Water Diver Course in Koh Tao. Over 2.5 days, you’ll combine interactive classroom learning, hands-on shallow water practice, and four incredible open water dives around the island.

Guided by experienced SSI instructors, you’ll master essential dive skills, gain confidence underwater, and discover the vibrant coral reefs and marine life that make Koh Tao world-famous. By the end of the course, you’ll earn your SSI Open Water Diver certification, allowing you to dive anywhere in the world up to 18 meters.

Ready to start your adventure?

What’s included

What to bring

Prerequisites

Itinerary

8:30-12:00 Orientation & Academic session

12:00-12:30 Break

12:30-17:00 2 Open Water Dives

17:00-17:30 Debrief

09:00-10:30 Academic session 4-6

10:30-11:00 Dive planning

11:00-11:30 Exam and mask fitting workshop

11:30-12:15 Break

12:30-17:00 2 Open water dives

17:00-17:30 Debrief

07:30-12:00 2 Open water dives

12:00-12:30 Certification and celebration :)

Take the Next Step: SSI Advanced Adventurer Course

The SSI Advanced Adventurer Course is the perfect follow-up to your Open Water certification. Designed to enhance your confidence and abilities, this course introduces you to five different types of dives, including deep diving and underwater navigation.

In just two days, you’ll gain the skills to dive deeper (up to 30 meters) and explore more advanced dive sites around Koh Tao and beyond. Whether you’re interested in night dives, wreck exploration, or perfecting your buoyancy, this course is your gateway to becoming a more skilled and adventurous diver.

SSI Open Water Diver

Learn to scuba dive in Koh Tao with the SSI Open Water Diver Course. In just 2.5 days, you’ll train with expert instructors, complete four ocean dives, and earn your certification to dive worldwide up to 18m.

All activities start the day after arrival on the island.

฿9,500

Why choose Goodtime for Scuba Diving in Koh Tao?

Smaller Groups

Max 4 students per instructor for a more personalised experience.

Later Starts

Enjoy the freedom to sleep in; we start later than most dive schools on the island.

Uncrowded dive sites

We carefully plan our dive trips to avoid the crowds.

Fully Equipped Classroom

Our beach front classroom equipped with Air-Con and WiFi is the perfect environment to learn to dive on Koh Tao.

Highly experienced instructors

Our professional SSI instructors are passionate divers with extensive local knowledge.

Speed boat

We have our very own speedboat that allows us to travel to further dive sites in the quickest time possible.

Reviews

google Rating
4.9
Based on 1,396 Reviews
Maxime Devaux
9 December 2025

First time diving, i wasn't worried a minutes with such a good presentation and training. Two great divings, feeling like realising a child's dream. Big thanks to Erine, Eduardo and Michael for the fun time, enjoy the beers 🤙

Karan Sharma
8 December 2025

Spoon, Anna and Micheal were AMAZING! We saw green turtles during our snorkel dives. Can’t wait to go for scuba dive with them. Highly recommend them, their fun games and jump competitions 🥳 Update: just done two of their scuba dives. Had an amazing dive. T2 is an amazing diving instructor.

nicolas brouet
8 December 2025

Thank you goodtime for those very nice dives this morning… a special thank to anna to marketing me, Lukas and Mika to supervise and help me, thank to my wandering buddy Lydia and to the French enigmatic and nice the tall Sha … enjoy the season guy and I will be back in a week

Hermann Weiß
7 December 2025

@Lukas Thanks for the great first dive in the sea! @Lydia Thank you for the calm, slow dive at the reef! It was great to see so much! @ Ana Thank you for the great dive at the wreck, it was beautiful! @restaurant team Very friendly and fun staff, thank you for the hospitality! @Zach Thanks for the great photos! @T2 Tanks for the Great dive! Thanks Michi for being my buddy, great dives!

Harley - Amy Banks
7 December 2025

The best dive centre on Koh Tao! Lydia is an incredible instructor and made me feel so safe, comfortable and confident doing my Open Water course. They were amazing with my 10m depth limit due to my medical condition. Lukas was amazing speaking to two specialist diving physicians to make sure everything was safe and that they understood my situation. Everything was adapted and they even offered for me to do more advanced courses adapted to my depth limit. Ana was so good with teaching the theory especially in an ADHD friendly way and they have an amazing team speaking several languages! Really good price, the best people, an amazing environment, really knowledgeable instructors, everything was amazing, I couldn't recommend it more!

Marek Wilk
3 December 2025

Diving was great and crew truly awesome and fun. Special thanks to Ana, Lidia, Ryan, T2, Micha, Che!!!!

Frequently Asked Questions

Frequently asked questions about Scuba Diving in Koh Tao

Scuba Diving in Koh Tao has been very popular for years, we have some of Thailand’s best dive sites and great diving conditions all year round. Our most popular course is the SSI Open Water Diver course which takes 2.5 days to complete and allows to to dive all over the world once you are certified. This course is ideal for beginners who want to get Scuba certified on Koh Tao.

If you are short on time the SSI Basic Diver is for you! This is a half-day experience where you can dip your toes in and explore the underwater world.

Any of the dive organisations in the world can give you the Open Water license, and with it you can dive in every dive centre in the world for the rest of your life – an SSI diver can of course dive in a PADI centre or the other way round, for example.

However, with SSI you do get benefits:

Online Learning
While most organisations offer online learning, not all of them offer it free of charge and can end up racking up quite the bill. SSI offers your learning materials for free as part of your course registration and is easy to navigate using the MySSI app. The app is regularly updated and also offers additional free courses like the ´Try Diving´ and the ‘Blue Oceans‘ for you to enhance your scuba diving knowledge.

Recognition Ratings
SSI do things a little differently to other diving agencies, they continue to recognise your advancement in diving whether you are enrolled in a course or not. When you reach certain milestones you will be awarded recognition status. This is why we encourage specialities over the SSI Advanced Adventurer or Advanced Open Water courses. With SSI once you complete 4 speciality courses and 24 dives you will automatically be rewarded with Advanced Open Water recognition status. Taking this route allows you to explore your passions underwater without being restricted to one exploration dive per specialty! Don’t forget we offer discounts on bundles too!

Flexibility
SSI allows its professionals to teach with an 80/20 approach meaning that the instructor can adapt 20% of the course to fit the pace of learning, ensuring a student focused training programme worked around the needs of the students – after all everyone learns at different paces.

The minimum age to learn to scuba dive and become certified is ten years old. If the diver is between 10-14 they will be awarded with a Junior SSI Open Water Certification that will automatically upgrade to Open Water Diver once they turn 15.

However, the SSI Explorers program provides options for children aged six and up to experience diving and snorkeling in very shallow water.

Diving in Koh Tao is popular for its year-round diving conditions, boasting clear waters, vibrant marine life, and stunning dive sites available 365 days a year. Whether you’re a beginner starting with an SSI Open Water Diver course or an experienced diver, diving in Koh Tao offers it all—excellent training sites, famous dive spots, shipwrecks, and pinnacles like Sail Rock. With some of the world’s most affordable and accessible diving packages, Koh Tao remains a must-visit destination for underwater enthusiasts across Southeast Asia.

At Goodtime, we make your Koh Tao experience even more affordable with our exclusive discounts. Get 25% off accommodation, with rates starting at just 1,150 Baht for private double or twin rooms and 500 Baht per night in our 4-bed dorms. Enjoy 20% off delicious meals at our beachfront restaurant, perfect for refueling after your adventures. Plus, save 10% when you book any scuba diving or rock climbing bundle—making it easier than ever to dive, climb, and relax on Koh Tao!

SSI do things a little differently to other diving agencies, they continue to recognise your advancement in diving whether you are enrolled in a course or not. When you reach certain milestones you will be awarded recognition status. This is why we encourage specialities over the SSI Advanced Adventurer or Advanced Open Water courses. With SSI once you complete 4 speciality courses and 24 dives you will automatically be rewarded with Advanced Open Water recognition status. Taking this route allows you to explore your passions underwater without being restricted to one exploration dive per specialty! Don’t forget we offer discounts on bundles too!

Yes, a basic level of in-water ability is required to scuba dive. For certain courses, you’ll need to complete a water fitness evaluation before heading into the open water. This includes either a 200-meter unaided swim or a 300-meter swim using a mask, snorkel, and fins. These requirements ensure your safety and confidence during your underwater adventures.

Contact Our Team
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7 days a week.

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+66 (0) 98 519 5504
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7 days a week.