Similan Islands, Thailand
    Phuket Environmental Protected Area

    Sub Aqua

    Best months: Jan–May

    Protected Area

    Phuket Environmental Protected Area

    Why dive here

    With 173+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - Sub Aqua offers some of Similan Islands's richest diving. Water ranges 29-31°C, warmest April, May, June.

    Best timeJan–May
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBlacktip Reef Sharks, Eagle Rays, Giant Moray Eels, Whale Sharks and Clownfish · 173+ species recorded
    Water29-31°C · warmest April, May, June
    StandoutExceptional marine biodiversity

    Sub Aqua feels like one of those sites you only really appreciate once you’ve done a few Similan trips. It’s not flashy, no dramatic swim-throughs or huge pelagics, but we think it’s consistently rewarding, especially for macro lovers. We often drift along the sloping reef, which is really more of a gentle incline, covered in these big, healthy tables of staghorn coral. Look closely among the branches; we’ve had excellent luck spotting Spinysnout Pipefish here, often swaying in the gentle surge. The real draw here, for us anyway, is the sheer variety of smaller stuff. You’ll see loads of Bandcheek wrasse flitting about, and the resident Pufferfish are always good for a chuckle. We’d suggest taking your time, really scrutinizing the coral heads for Spotty Blennies or even a curious Mangrove Flathead Goby tucked away. It’s a very relaxed dive, generally mild current, so it’s perfect for new divers getting comfortable or experienced photographers who want to linger. We love it as a second dive of the day, a nice contrast to some of the Similans' more energetic sites.

    Today06:1518:1411h 59m daylightGolden hour 17:46

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    Conditions

    Ocean conditions, forecast and tides for Sub Aqua

    Sub Aqua Ocean Conditions

    Monthly averages for Sub Aqua, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (8.1, 98.3) (6km away)

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    October Averages

    Sea Temperature

    30°C

    85°F · Range: 28.7–30.4°C

    Current Speed

    5.1 cm/s

    Direction: S (191.3°)

    Salinity

    29.75 PSU

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

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