Phuket Diving Season | When Should You Go?

Phuket, Thailand


Phuket Diving Season | When Should You Go?

Phuket, Thailand


Phuket Diving Season | When Should You Go?

Phuket, Thailand

The paradise island of Phuket is renowned for its diving, its arguably the best in Thailand. But when is the Phuket diving season? Surprisingly, the two main diving areas have slightly different times they can be accessed and yet they’re only 100km apart.

What are the main diving areas?


Phuket Diving season

First of all, we need to take a look at the areas for diving in Phuket.

The main two are the south east of the island, accessible via Chalong, and actually just off the island to the north west, accessible via Khao Lak.

For arguably the best diving in Thailand (available Oct – May) check out – Khao Lak Diving | No.1 for Divers and the BEST in Thailand

Each area has a different diving schedule due to the geographical surroundings and yearly weather cycles.

If you look at the map everything to the east of Phuket is open to the ocean; unguarded if you will. The diving to the south east is somewhat protected from the open seas by land masses hence you can dive some sites all year.

For more on all year diving, check out – Krabi Diving – Here’s What You Need to Know Discover Phi Phi Diving | Where to Go and What to See

High season for diving in Phuket

The main diving season in Phuket runs from around the end of October until April. This time of year all the diving is usually accessible.

The Similan and Surin National Parks (from Khao Lak) are closed the rest of the year as the seas can get too rough for boats and divers during this time. It is so exposed to the elements from May-Oct that the authorities close the park in full for safety.

You will find the regularity of trips less during the ‘summer’ season of May-Oct, from Chalong. Don’t worry though, there is still great diving to be had.

Many people worry about the weather at that time of year as it is considered ‘rainy season’. The truth is, it usually rains for an hour or two and then the sun is back out in full for most of that time of year. Do bear in mind that it may be grey and wet for a couple of days on occasion though.

When is best to visit?

To be frank, the best dive site close to Phuket is most likely considered Richelieu Rock, up in the Surin National Park. It really is one that should be on your list if you are diving in Thailand. With that in mind, you can only access the national park between late October and early April.

We would highly recommend that you do a liveaboard as the Similan and Surin National Parks are a little way out.

Also, there is ample diving for 4-6 days if you include the Koh Tachai and Koh Bon. Liveaboards also give you a better diving schedule as you can often can sleep right near to your next day’s diving. If you like diving on uncrowded, yet popular sites, it is certainly the way to go. You can be out of the water after your first dive before the day boats even arrive. Very sophisticated.

If you are in Thailand outside of the months of October to April, do dive the south east. There is some nice reef diving and a couple of wrecks; King Cruiser the most well known. As mentioned before, the scheduling will be a little more sparse at that time of year as it is less busy. There will still be plenty of day boats and some liveaboards operating.

When diving in Phuket what will I see during the season?

As with all diving, there can never be any guarantees although the list below details the likely critters you will encounter.

Whale Sharks

Blacktip Reef Sharks




Eagle Rays

Manta Rays


Leopard Sharks

Hawksbill Sea Turtles

Harlequin Shrimps


Further Reading…

Scuba Diving in Phuket Price Guide | What Can I Expect? Why You’ll Love Liveaboard Diving from Khao Lak, Thailand

Sam Roi


Avid Scuba Diver involved in the Dive Travel industry since 2018.

Conspiracy Theorist (alleged)

Nerd (confirmed)

Favourite Critter – Bumphead Parrotfish (so dorky with human smiles!)

Best dive site so far – Melissa’s Garden, Raja Ampat

Favourite dive (experience)  – Richelieu Rock, Thailand