10-25m
    Great Barrier Reef, Australia

    Lighthouse Bommie

    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 - Lighthouse Bommie 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 10-25m
    StandoutExceptional marine biodiversity

    Lighthouse Bommie, despite its rather functional name, is one of our favourite little corners of the Great Barrier Reef. It’s not some grand canyon or vast wall, but a beautiful, isolated pinnacle rising from the sandy seafloor, absolutely cloaked in coral. We’re talking dense stands of staghorn coral, creating little alleys and overhangs, mixed in with big, bold common mushroom corals. Drop down and you'll often find schools of six-line wrasse darting through the coral branches, almost too quick to follow. Look closer, and you’ll spot the Bugeye Dottybacks peeking out from their crevices, alongside some surprisingly colourful pygmy gobies if you’ve got a good eye. We’ve found the best light hits the bommie mid-morning, really bringing out the corals' colours. It’s a site that rewards slow, meticulous exploration – perfect for photographers or anyone who likes to really soak in the smaller details rather than chasing big pelagics. It’s fairly sheltered, making it a good choice when the outer reef is a bit choppy.

    Typical Lighthouse Bommie Dive Profile

    5m10mSafety Stop0m10m max~60 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.

    Today05:5418:1612h 21m daylightGolden hour 17:47

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    Conditions

    Ocean conditions, forecast and tides for Lighthouse Bommie

    Lighthouse Bommie Ocean Conditions

    Monthly averages for Lighthouse Bommie, 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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