Diving and Snorkeling spot

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What you'll see (19)

Java RabbitfishSiganus javusseen 6× near here

Bengal SergeantAbudefduf bengalensisseen 6× near here

Pacific AsaphisAsaphis violascensseen 6× near here

Ornate SandgobyIstigobius ornatusseen 5× near here

Dussumier's RockskipperIstiblennius dussumieriseen 5× near here

Blue-barred ParrotfishScarus ghobbanseen 4× near here

Surf ParrotfishScarus rivulatusseen 4× near here

blotched neriteNerita albicillaseen 4× near here

Indo-Pacific Sergeant MajorAbudefduf vaigiensisseen 3× near here

Copperband ButterflyfishChelmon rostratusseen 3× near here

Bluering AngelfishPomacanthus annularisseen 3× near here

Crescent GrunterTerapon jarbuaseen 3× near here

Whitecheek Monocle BreamScolopsis vosmeriseen 3× near here

Pearly Monocle BreamScolopsis margaritiferaseen 3× near here

Black Longspine UrchinDiadema setosumseen 3× near here

Viola Land Hermit CrabCoenobita violascensseen 3× near here

Pacific Bean DonaxLatona fabaseen 3× near here

Hawksbill Sea TurtleEretmochelys imbricataseen 2× near here

Scissortail SergeantAbudefduf sexfasciatusseen 2× near here

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Planning a trip

4–7 days

worth going for

Flight, then a boat or domestic hop.

1,192km from Singapore — about 12h each way, so two of those days are travel. 14 dive sites within 25km, enough for several days of diving.

When people dive it

Busiest Mar, Apr, Nov, Dec · almost nobody dives it Jun, Sep, Oct.

From 973 logged sightings — when divers are in the water, which is not quite the same as when visibility is best.

Dive Crew is a dive group from Singapore. Members plan trips here, log their dives, and share their photos of each site.

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Monsoon

October is the worst of the season here.

Koh Tao and its neighbours run on the opposite calendar to Phuket — the gulf is at its best while the Andaman side is shut.

Northeast monsoon

The gulf's wet season. Heavy rain, wind onto the east-facing sites, and visibility that drops to a few metres after a storm. Diving continues; it just stops being worth the flight.

The year here

JFMAMJJASOND

Best here: March, April, May, June, July, August.

Gulf of Thailand. Written by hand from how the season actually runs, calibrated against what the boats do, since a season that disagrees with the operators is wrong however good the meteorology behind it. It describes most years, not this one: the forecast above is what knows about next week.

Moon and tides

Waning gibbous

71% lit · day 20 of the lunar month

Neap tides

Neap tides — the smallest range of the month, so the weakest currents. Easy conditions and usually the clearest water, though a drift site may barely drift.

New 10 Oct Full 26 Oct

Phase computed here, not fetched. This is the spring/neap cycle, which sets how hard the water moves — not a tide table: no free source publishes high and low water for Southeast Asian reefs, and the range peaks a day or two after the moon does, by an amount that varies with the coast. For times on the day, ask the operator.

Getting there

~10h 18m

door to water, each way · 4 legs

FlightBangkok (BKK)~4h 24mFlight time plus the airports at both ends. A connection adds to it.Find flights →
Transferthe jetty~3h 24mRoad transfer to the coast, usually arranged by the resort or liveaboard.Directions →
Ferrythe crossing~2hAt this distance the last stretch is a scheduled crossing rather than a dive boat, so book it before the flight — a missed sailing usually costs a day. Which crossing it is has been worked out from the distance and not from a timetable; ask the operator.
Dive boatDiving and Snorkeling spot~30 minThen the dive boat out from the island.

📍 Diving and Snorkeling spot on Google Maps 🧭 Route from Bangkok

Times marked ~ are estimated from straight-line distance and will be roughly right at best. The road legs are the ones Google Maps answers properly; it will not plan the ferry or the dive boat at all. A dive site's coordinates put a pin in open water, so the map link drops you on the site, not on a jetty.

Details

Island: Ko Chang
Country: Thailand
Marks: 11°58.004'N 102°18.605'E
Position: 11.9667, 102.3101

Where it is

Loading the map…

Nearby

Sightings and photographs from iNaturalist contributors, research-grade records within 6km, under Creative Commons licences. Counts are what divers and snorkellers have bothered to log — a common fish with few records is common all the same.