Open Water Course - Become certified diver in 3 days
Overview
Available languages
72 hours
Mobile ticket
Your first certification is a license to learn more! Performance-based, after this course you will have the knowledge and skills to plan and execute a dive to a maximum of 18 meters with a certified buddy.
Day 1 - Academics + Diving
Meet your instructor, fellow students and start the first academic session. Short break for lunch before jumping into your confined skills session for the afternoon.
Day 2 - Academics + Diving Skills
Start academic session in the morning before heading for the afternoon boat for confined water training skills dives 1 and 2 with a maximum depth of 12m at 2 different dive sites around Koh Tao.
Day 3 - Diving + Exam
Enjoy 2 dives at a maximum depth of 18 meters, which is the maximum allowed for an open water diver! On some of the best dive sites around Koh Tao, last day is purely fun diving, no training, no exercises, just diving! After completing your last 2 dives we will be doing the final exam at the school!
Additional Info
Public transportation options are available nearby
Not recommended for pregnant travelers
Not recommended for travelers with poor cardiovascular health
Travelers should have at least a moderate level of physical fitness
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
What To Expect
Dive Sites on Koh Tao are perfectly suited for all dive courses, considering depth, clarity, and calmness of the dive environment. The conditions are generally very good making it possible for everyone to dive Koh Tao.
What‘s Included
Online theoretical material
4 Open Water Dives in the Ocean
1 confined water training in pool
Use of SCUBA equipment
Digital certification
Lunch
Coffee and/or Tea
Pickup points
The Tarna Resort
68 Moo 1 Thailand
Koh Tao Hotel 4U
25/87 Moo 2 Thailand
Koh Tao Regal Resort
7/1 M2, Mae Haad, Thailand
Koh Tao Cabana
16 Village No.1, Baan Haad Sai Ree Thailand
Options
accommodation 2nights dorm
Nirvana Guesthouse
Pickup included
Open Water Course - Become certified diver in 3 days
Pickup included
Reviews
1,139 reviews
Total reviews and rating from Viator & Tripadvisor
Scuba open water
kevinportner,,Feb 4, 2026
- Review from Tripadvisor
5.00I was with Oni, the course was excellent and very fun! Would do it all over again :) First day was in the pool, then we went to the sea on second and third days.
Balanced and professional- perfect mix of fun and learning
Voyager53893222265,,Jan 25, 2026
- Review from Tripadvisor
5.00I completed both my Open Water and Advanced courses with Oni, and it was an excellent experience. He strikes the perfect balance between being fun and being a strict, disciplined instructor. He focuses strongly on the lessons that truly matter while diving and never compromises on safety. I also loved diving with the team and am very happy to be certified under his guidance.
Ae the Whale shark and the Sweds
Vacation12542674284,,Jan 24, 2026
- Review from Tripadvisor
5.00We had a wonderful instructor called Ae and she was very good at teaching and we had so much fun. We saw a whale shark, Stingray, sea turtle and more beautiful fishes. Thanks Koh Tao Scoba club and thanks Ae for the fun experience😁
10/10
rebeccasS5417AC,,Jan 22, 2026
- Review from Tripadvisor
5.00A was an excellent teacher and made sure all of us in the group was doing fine and had fun! Loved it!
OW diving
Mels Hartogh,,Jan 22, 2026
- Review from Tripadvisor
5.00It was a very nice experience! First time diving but everything went perfect. Had marina as the instructor wich was also perfect!
Sophie is the best!
peterhS9246RE,,Jan 21, 2026
- Review from Tripadvisor
5.00Had a fantastic experience doing my open water with KTSC. Saw so many fish and corals which I had never seen before. Our instructor Sophie kept everything super safe and fun all the time, and her enthusiasm for diving was infectious!!
Dino’s review
FarAway52948931976,,Jan 7, 2026
- Review from Tripadvisor
5.00Excellent experience, I throughly enjoyed my time on the 3 days open water scuba diving. My instructor Dino’s was very thorough and is excellent at explaining everything. I would highly recommend Scuba club on Koh Toa!
Dinos great instructor
H9231SKellies,,Jan 7, 2026
- Review from Tripadvisor
5.00I had an amazing time doing my open water diving with our instructor Dinos. He was very thorough, kind and patient. He explained everything in depth, was super patient in the pool until we learnt all the skills perfectly so when we tried under the sea we did great (in my opinion) 😂. Furthermore, any issues under the sea , for example me struggling to find my neutral buoyancy he took his time and made sure I felt comfortable and I was able to nail it. My friend ( Finn) struggled with his equalisation... he was patient so he didn't feel rushed. Joe my other friends strap came loose and he adjusted. He carried this all out calmly and made you feel at ease... there were other things but just some examples. He was also very informative about Marine life. I was very confident in my exam all thanks to his explanations throughout the course. I also feel very happy to sort my equipment on my own and understand all the components, for next time I go diving. Lastly and most importantly, thankyou Dinos for making me feel comfortable and helping me complete this course
10/10
jessicamY7079TO,,Jan 7, 2026
- Review from Tripadvisor
5.00Diving with koh tao scuba club was amazing . My instructor Lee was the best I was so nervous and she made me feel completely calm as soon as it got to day 2 in the ocean. I will be going back to do my advanced in a few months and I can’t wait .
Open Water Diving Witz Kat & Yeray
Pioneer33023603446,,Nov 28, 2025
- Review from Tripadvisor
5.00I completed my Open Water diving course and I’m so happy and grateful that Kat and Yeray were my instructors. They truly did an amazing job! I struggled a lot in the beginning and often felt panicked while diving, but they helped me overcome my fear and were incredibly kind and patient with me. Not once did I feel like they were annoyed, even though I needed a lot of time to understand each skill. I highly recommend this dive school and I’m very thankful that I had the chance to learn how to dive there. I will definitely come back in March to do my Advanced course with them.
From THB 11,000.00
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Operated by Koh Tao Scuba Club