20-40m
    Goat Island & Hauraki Gulf, New Zealand
    Moturekareka Is

    Flat Rock

    Best months: Jan–Apr

    Protected Area

    Moturekareka Is

    Why dive here

    With 72+ marine species recorded in the area - including blue sharks, dolphins, hammerhead sharks, humpback whales and seahorses - Flat Rock offers some of Goat Island & Hauraki Gulf's richest cave 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
    CharacterCave dive · max 20-40m
    StandoutRich in charismatic marine life

    Flat Rock is a site we keep coming back to, mainly because it never quite feels the same twice. The big bouldery reef, dropping to 17 meters, is carved with these fantastic canyons and swim-throughs. If you time the current right – and that’s the trick, it can be a bit of a lottery out here – you’ll drift past walls absolutely plastered with white-striped anemones, their tentacles waving in the flow. We love dropping in and just letting the water push us gently through the bigger openings, spotting schools of kingfish and snapper holding formation in the calmer spots. It’s not uncommon to see a bronze whaler or a smooth hammerhead cruise by in the bluer water, always a thrill. For us, the best dives are in the morning before the boat traffic picks up, when the light really pierces down into those deeper crevices. Visibility averages around 12 meters, decent enough to appreciate the scale of the rock formations and the sheer number of blue maomao zipping about. This spot suits divers who are comfortable with a bit of current and enjoy a dynamic reef experience.

    Typical Flat Rock Dive Profile

    10m20mSafety Stop0m20m max~30 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

    Depth of 20m - Advanced Open Water certification recommended.

    Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.

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

    Today05:4418:3212h 49m daylightGolden hour 17:58

    Nearest Dive Centres to Flat Rock

    Dive shops near Flat Rock

    View all dive centres in Goat Island & Hauraki Gulf

    Reviews for Flat Rock

    Sign in to write a review

    Conditions

    Ocean conditions, forecast and tides for Flat Rock

    Flat Rock Ocean Conditions

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

    ExcellentGreatGoodFairPoor★Best monthsThis month

    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)

    Plan & book

    Ways to dive Goat Island & Hauraki Gulf, from day trips to liveaboards.

    Day trips & courses

    via GetYourGuide

    Guided dives, courses and snorkel trips with instant booking.

    Find dive trips in Goat Island & Hauraki Gulf

    Places to stay

    via Booking.com

    Hotels and dive resorts near Goat Island & Hauraki Gulf.

    Search stays in Goat Island & Hauraki Gulf

    Dive insurance

    Most travel insurance excludes or limits scuba. Check what you need before you go.

    Dive insurance explained

    Partner links: we may earn a commission if you book, at no extra cost to you. How we make money

    Where to Stay near Flat Rock

    Prices from Booking.com. We may earn a commission at no extra cost to you.

    Back to Goat Island & Hauraki Gulf