Goat Island & Hauraki Gulf, New Zealand
    Whanganui A Hei

    MAHURANGI IS/ GOAT IS

    Best months: Jan–Apr

    Protected Area

    Whanganui A Hei

    Why dive here

    With 72+ marine species recorded in the area - including blue sharks, dolphins, hammerhead sharks, humpback whales and seahorses - MAHURANGI IS/ GOAT IS offers some of Goat Island & Hauraki Gulf's richest reef diving. Water ranges 15-21°C, warmest January, February, March.

    Best timeJan–Apr
    WetsuitA 5mm wetsuit
    Marine lifeBlue Sharks, Dolphins, Hammerhead Sharks, Humpback Whales and Seahorses · 72+ species recorded
    Water15-21°C · warmest January, February, March
    CharacterReef dive
    StandoutRich in charismatic marine life

    Mahurangi Island, more commonly known as Goat Island, offers a surprisingly charming dive. Forget the grand wrecks of Truk Lagoon, these aren't the Queen Mary. Instead, you'll find a couple of old tractors sunk years ago, now softened by time and marine growth. We love poking around the cabins, imagining them still hauling across some muddy paddock. The real beauty here is the macro life and the sense of calm. Look closely, and you’ll spot a colony of triplefins darting in and out of every nook, alongside curious spotties and the occasional lemon sole camouflaged on the sand. Visibility hovers around 8 metres, which, for New Zealand, is pretty decent, and the maximum depth of 13 metres makes it an ideal spot for newer divers to gain confidence without feeling overwhelmed. We've often seen eagle rays glide past, a quiet, graceful moment in the blue, and small schools of squid will often hover nearby, their colours shifting with every pulse. It’s an easy, sheltered dive, a reliable favourite when the Hauraki Gulf decides to throw a tantrum.

    Today05:4018:2912h 49m daylightGolden hour 17:55

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    Conditions

    Ocean conditions, forecast and tides for MAHURANGI IS/ GOAT IS

    MAHURANGI IS/ GOAT IS Ocean Conditions

    Monthly averages for MAHURANGI IS/ GOAT IS, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-36.93, 175.86) (22km away)

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    October Averages

    Sea Temperature

    16°C

    60°F · Range: 14.5–16.9°C

    Current Speed

    1.41 cm/s

    Direction: SE (135°)

    Chlorophyll-a

    0.497 mg/m³

    Moderate productivity

    Salinity

    34.91 PSU

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

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