Koh Tao, Thailand
    Suratthani Environmental Protected Area

    Red Rock

    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 - Red Rock 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

    Red Rock, or Hin Daeng as the locals call it, is one of our favourite spots on Koh Tao for a gentle dive. It’s tucked away just off the southwest tip, a single granite pinnacle that breaks the surface. We love dropping in here when the weather’s a bit choppy elsewhere, as it’s often sheltered. The real draw here is the swim-through. It’s not a dramatic cave system, more of a narrow passage that opens up into a sandy bottom around 18 metres. Sunlight dapples through from the cracks above, and you’ll often find a school of Scissortail Sergeants hanging out in the gloom. It’s a tight squeeze in places, so good buoyancy is key, but it’s never claustrophobic. Once you’re through, the reef slopes gently, scattered with Staghorn corals, and we’ve spent many an hour just drifting over the sandy patches looking for Goldspeckled Shrimpgobies. Keep an eye out for the larger residents too; we’ve had some cracking encounters with Blue Ring Angelfish and the occasional Honeycomb Grouper patrolling the deeper ledges. It’s a relaxed dive, perfect for photographers or anyone who just wants to take their time exploring.

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

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    Conditions

    Ocean conditions, forecast and tides for Red Rock

    Red Rock Ocean Conditions

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

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    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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