15-25m
    Great Barrier Reef, Australia

    North Horn

    Best months: Feb–Mar

    Why dive here

    With 154+ marine species recorded in the area - including hammerhead sharks, sea turtles, tiger sharks and napoleon wrasse - North Horn offers some of Great Barrier Reef's richest reef diving. Water ranges 24-30°C, warmest January, February, March.

    Best timeFeb–Mar
    WetsuitNo wetsuit needed, or a rash guard
    Marine lifeHammerhead Sharks, Sea Turtles, Tiger Sharks and Napoleon Wrasse · 154+ species recorded
    Water24-30°C · warmest January, February, March
    CharacterReef dive · max 15-25m
    StandoutExceptional marine biodiversity

    North Horn, up in the Ribbon Reefs, is where the Great Barrier Reef really puts on a show. We’ve always found this site to have a raw energy, a feeling of being right on the edge of something wild. It’s not about intricate coral gardens here, though you’ll see plenty of healthy hard corals clinging to the wall. This site is all about the pelagics. It’s often touted as a shark feed site, and while you will see plenty of grey reef sharks patrolling the drop-off, it’s the sheer volume of other large fish that makes it special. Big schools of giant trevally flash past, sometimes a dozen strong, and we've regularly seen dogtooth tuna cruise by, sleek and fast. Keep an eye out into the blue; we’ve had encounters with hammerheads here a few times, usually early in the morning before the dive boats get too busy. The currents can be brisk, so you’ll want to be comfortable with drift diving, but that’s precisely what brings the big fish in. Our advice? Go with a dive operator who prioritises early morning dives here; it often makes all the difference.

    Typical North Horn Dive Profile

    5m10m15mSafety Stop0m15m max~50 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

    Strong currents typical this month (avg 30 cm/s). Good buoyancy control essential.

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

    Today05:5118:1212h 20m daylightGolden hour 17:43

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    Conditions

    Ocean conditions, forecast and tides for North Horn

    North Horn Ocean Conditions

    Monthly averages for North Horn, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-15.65, 145.72) (5km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    26°C

    80°F · Range: 24.5–29°C

    Current Speed

    30.07 cm/s

    Direction: S (183.8°)

    Chlorophyll-a

    0.057 mg/m³

    Very clear (oligotrophic)

    Salinity

    35.08 PSU

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

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