Koh Tao, Thailand
    Suratthani Environmental Protected Area

    Ao Hin Ngam

    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 - Ao Hin Ngam 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

    We really like Ao Hin Ngam, especially when the light hits just right in the late morning. It’s got a lovely, natural feel to it, a bit more rugged than some of the more manicured sites around Koh Tao. What makes it standout for us are the big, sprawling patches of staghorn coral. They’re everywhere, creating this intricate habitat, and if you take your time, you’ll spot all sorts of small stuff darting in and out. We’ve spent ages here just watching the pink anemonefish. They’re always busy, fiercely guarding their homes. Keep an eye out for blue-spotted stingrays tucked into the sand flats too, especially as you drift away from the main coral bommies. Visibility here can sometimes be a bit variable, particularly after a strong rain, but when it’s good, the water has that lovely warm, green hue that’s classic Koh Tao. We’d suggest this one for divers who appreciate a slower pace, those who like to really observe rather than just cruise past. You won’t find huge pelagics, but the sheer density of reef fish, like the big schools of blue and gold fusiliers, is really impressive. Look for the blackfin barracuda hanging out in the deeper sections, often just watching the world go by.

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    Conditions

    Ocean conditions, forecast and tides for Ao Hin Ngam

    Ao Hin Ngam Ocean Conditions

    Monthly averages for Ao Hin Ngam, 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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