Koh Kra

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What you'll see (19)

Zigzag WrasseHalichoeres scapularisseen 37× near here

White DamselDischistodus perspicillatusseen 31× near here

Moorish IdolZanclus cornutusseen 30× near here

Ocellaris AnemonefishAmphiprion ocellarisseen 30× near here

Checkerboard WrasseHalichoeres hortulanusseen 26× near here

Greenblotch ParrotfishScarus quoyiseen 26× near here

Triangular ButterflyfishChaetodon triangulumseen 25× near here

Magnificent Sea AnemoneRadianthus magnificaseen 25× near here

Indian Redfin ButterflyfishChaetodon trifasciatusseen 23× near here

Indian Bullethead ParrotfishChlorurus sordidusseen 22× near here

Pacific Dusky WrasseHalichoeres annularisseen 21× near here

Lined Monocle BreamScolopsis lineataseen 20× near here

Blackeye ThicklipHemigymnus melapterusseen 19× near here

Greencheek ParrotfishScarus prasiognathosseen 19× near here

Indo-Pacific Sergeant MajorAbudefduf vaigiensisseen 18× near here

Pearly Monocle BreamScolopsis margaritiferaseen 18× near here

Swarthy ParrotfishScarus nigerseen 17× near here

Clark's AnemonefishAmphiprion clarkiiseen 17× near here

Banded Sea UrchinEchinothrix calamarisseen 16× near here

Planning a trip

3–5 days

worth going for

Short flight, then a transfer.

759km from Singapore — about 8h each way. 11 dive sites within 25km, enough for several days of diving.

When people dive it

Busiest Jul, Dec · almost nobody dives it May, Jun, Aug, Sep, Oct.

From 2,686 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

~5h 9m

door to water, each way · 4 legs

FlightLangkawi (LGK)~3h 27mFlight time plus the airports at both ends. A connection adds to it.Find flights →
Transferthe jetty~18 minRoad transfer to the coast, usually arranged by the resort or liveaboard.Directions →
Ferrythe crossing~54 minAt 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 boatKoh Kra~30 minThen the dive boat out from the island.

📍 Koh Kra on Google Maps 🧭 Route from Langkawi

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 Adang
Country: Thailand
Marks: 6°29.571'N 99°18.835'E
Position: 6.4928, 99.3139

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.