When is the Best Time to Dive Sail Rock?

If you're planning a dive trip in Thailand, Sail Rock should be at the top of your list. Located in the Gulf of Thailand between Koh Phangan and Koh Tao, this famous pinnacle dive site is known for its dramatic drop-offs, chimney swim-through, and incredible marine life—including the occasional whale shark.

At Asia Blue Scuba, we get this question a lot: “When is the best time to dive Sail Rock?” Let’s break it down.

Sail Rock is a Year-Round Dive Destination

One of the many reasons Sail Rock is so popular is that it’s diveable year-round. No matter when you're visiting Koh Phangan, you can book a dive trip with Asia Blue Scuba to explore this world-class site. Our experienced team runs regular trips to Sail Rock and knows how to make the most of any conditions.

But if you're looking for the best possible diving experience? There's a sweet spot in the calendar.

Best Diving Conditions: April to October

While diving is great all year, the best time to dive Sail Rock is from April to the end of October. During these months, conditions in the Gulf of Thailand are at their absolute peak.

Here’s why April to October stands out:

• Excellent visibility – often up to 30 meters
• Calm seas and ideal weather – perfect for smooth boat rides and easy entries
• Stunning marine life – including large schools of barracuda, groupers, and sometimes even whale sharks

At Asia Blue Scuba, we especially love this season for the vibrant underwater colors, relaxed surface conditions, and the sheer abundance of marine life.

Diving with Asia Blue Scuba in the Off-Season

From November through March, Sail Rock remains accessible, and Asia Blue Scuba continues to run trips every day. While visibility might dip slightly and seas can be a bit choppier, many divers still enjoy spectacular dives and fewer crowds at the site. 

Our instructors are always monitoring the weather and ocean conditions to ensure safe and enjoyable dives, no matter the season.

Ready to Dive Sail Rock?

Whether you're visiting during peak season or the quieter months, Asia Blue Scuba is here to take you to Sail Rock in comfort and safety. Our dive trips include high-quality gear, professional guides, and a fun, friendly atmosphere for divers of all levels.

Book your dive trip to Sail Rock with Asia Blue Scuba today and discover why it’s one of the best dive sites in Thailand—any time of year.