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Diving in Koh Tao: season and dive sites

Planning a dive trip to Koh Tao

Every figure below is counted from the 34 dive sites listed on this page. Where a value is missing for a site, that site is left out of the count rather than estimated.

Best monthsJan – Junfrom ten years of rainfall records for this area
Dive centres within 60 km46avg rating 4.86 · SSI 25 · PADI 20 · SDI 1
Species recorded56Wire Coral Crab, Amakusa Jelly, Shoulderspot Wrasse

Why these months

The dry months are not about staying dry. Rain washes sediment down rivers and into the sea, and visibility drops with it. The wet season also coincides with the monsoon, so wind and swell decide whether boats reach the exposed sites at all. Water temperature barely moves across the year in the tropics and is rarely the deciding factor.

One caveat worth knowing: the dry season means convenient, not necessarily the best diving. The plankton blooms that draw in manta rays and whale sharks come with nutrient-rich, cooler water, which is often the opposite of calm, clear conditions. If a particular animal is the reason for the trip, its own season matters more than the weather.

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34 dive sites found

Shark Bay

Shark Bay is a dive site in Koh Tao, Thailand. Currents typically run at 0.6 km/h and reach…

Hin Yippon

Hin Yippon is a dive site in Koh Tao, Thailand. It lies within the Than Sadet-Ko Pha-ngan National…

Mae Haad Bay

Mae Haad Bay is a dive site in Koh Tao, Thailand. Currents typically run at 0.6 km/h and…

Southwest Pinnacle

Southwest Pinnacle is a dive site in Koh Tao, Thailand. The site has a pinnacle. The sea floor…

Unicorn Wreck

Unicorn Wreck is a dive site in Koh Tao, Thailand. The site has a wreck. The sea floor…

Red Rock

Red Rock is a dive site in Koh Tao, Thailand. The sea floor at the site position lies…

Mango Bay

Mango Bay is a dive site in Koh Tao, Thailand. Currents typically run at 0.6 km/h and reach…

Shark Island

Shark Island is a dive site in Koh Tao, Thailand. Currents typically run at 0.6 km/h and reach…

Chumphon Pinnacle

Chumphon Pinnacle is a dive site in Koh Tao, Thailand. The site has a pinnacle. The sea floor…

Mae Haad/koh Ma

Mae Haad/koh Ma is a dive site in Koh Tao, Thailand. It lies within the Than Sadet-Ko Pha-ngan…

Twins

Twins is a dive site in Koh Tao, Thailand. The sea floor at the site position lies at…

Buddha Rock

Buddha Rock is a dive site in Koh Tao, Thailand. The sea floor at the site position lies…

Japanese Garden

Japanese Garden is a dive site in Koh Tao, Thailand. Currents typically run at 0.6 km/h and reach…

Green Shark

Green Shark is a dive site in Koh Tao, Thailand. The sea floor at the site position lies…

Sail Rock

Sail Rock is a dive site in Koh Tao, Thailand. It lies within the Than Sadet-Ko Pha-ngan National…

Laem Thien Pinnacle

Laem Thien Pinnacle is a dive site in Koh Tao, Thailand. The site has a pinnacle. The sea…

Lighthouse Bay

Lighthouse Bay is a dive site in Koh Tao, Thailand. Currents typically run at 0.6 km/h and reach…

Hin Ngam Bay

Hin Ngam Bay is a dive site in Koh Tao, Thailand. Currents typically run at 0.6 km/h and…

Mao Bay

Mao Bay is a dive site in Koh Tao, Thailand. Currents typically run at 0.6 km/h and reach…

Hin Pee Wee

Hin Pee Wee is a dive site in Koh Tao, Thailand. The sea floor at the site position…

Rock Point

Rock Point is a dive site in Koh Tao, Thailand. Currents typically run at 0.6 km/h and reach…

Nang Yuan Pinnacle

Nang Yuan Pinnacle is a dive site in Koh Tao, Thailand. The site has a pinnacle. Currents typically…

White Rock

White Rock is a dive site in Koh Tao, Thailand. Currents typically run at 0.6 km/h and reach…

Hin Wong Pinnacle

Hin Wong Pinnacle is a dive site in Koh Tao, Thailand. The site has a pinnacle. The sea…