12m
    Koh Tao, Thailand
    Suratthani Environmental Protected Area

    Cape Thian

    Best months: Oct–Feb

    Protected Area

    Suratthani Environmental Protected Area

    Why dive here

    With 54+ marine species recorded in the area - including sea turtles, tiger sharks and pufferfish - Cape Thian offers some of Koh Tao's richest diving. Water ranges 29-31°C, warmest April, May, June.

    Best timeOct–Feb
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeSea Turtles, Tiger Sharks and Pufferfish · 54+ species recorded
    Water29-31°C · warmest April, May, June
    Charactermax 12m

    Cape Thian is one of those spots on Koh Tao we return to again and again, especially when we want a relaxed dive with plenty to see. It’s pretty shallow, topping out at 12 metres, which means we get long bottom times and the light just floods the reef. Our favourite part has to be the sprawling fields of staghorn coral. They stretch out, creating these complex mazes for all sorts of smaller fish. Look closely and you’ll find iridescent ear-muff wrasse darting between the branches, and we often spot slinky slender groupers camouflaged against the coral heads. We particularly love a morning dive here, before the boat traffic picks up. The visibility tends to be at its best then, and the light filtering through the water columns onto the coral is just mesmerising. Keep an eye out for the resident blackfin barracuda – they’re usually cruising around the edge of the reef, keeping a watchful eye on things. While it’s unlikely, we have heard whispers of whale sharks making an appearance here during migration season, a definite bonus if you’re lucky. Cape Thian is ideal for new divers, photographers, or anyone who just wants to unwind and really take their time exploring a vibrant, shallow reef.

    Typical Cape Thian Dive Profile

    5m10mSafety Stop0m12m max~60 min estimated bottom time

    Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.

    Safety Notes

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today06:1018:0711h 57m daylightGolden hour 17:39

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    Conditions

    Ocean conditions, forecast and tides for Cape Thian

    Cape Thian Ocean Conditions

    Monthly averages for Cape Thian, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (11.17, 101.33) (40km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    30°C

    86°F · Range: 29.1–31.1°C

    Current Speed

    7.07 cm/s

    Direction: E (98.1°)

    Salinity

    31.67 PSU

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)

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