Southwest Pinnackle

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What you'll see (7)

Indian CaloriaCaloria indicaseen 7× near here

Mourning DoridJorunna funebrisseen 1× near here

Cup Coral NudibranchPhestilla melanobrachiaseen 1× near here

Ocellate PhyllidiaPhyllidia ocellataseen 1× near here

Java RabbitfishSiganus javusseen 1× near here

Armored PhyllidiopsisPhyllidiopsis loricataseen 1× near here

Faithful Sea SlugGoniobranchus fidelisseen 1× near here

Planning a trip

4–8 days

worth going for

Flight, then a boat or domestic hop.

1,062km from Singapore — about 12h each way, so two of those days are travel. 26 dive sites within 25km, enough for several days of diving.

When people dive it

Busiest Jul · almost nobody dives it Dec.

From 6,147 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 51m

door to water, each way · 3 legs

FlightKoh Samui (USM)~3h 51mFlight time plus the airports at both ends. A connection adds to it.Find flights →
FerryKoh Tao1h 30mThe Lomprayah catamaran, about 90 minutes, several a day.
Dive boatSouthwest Pinnackle30 minChumphon Pinnacle and the rest are 20 to 45 minutes off the island.

📍 Southwest Pinnackle on Google Maps 🧭 Route from Koh Samui

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

Max depth: 30 m
Entry: boat
Type: reef
Country: Thailand
Marks: 9°58.761'N 99°42.284'E
Position: 9.9793, 99.7047

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.