10m
    South Coast, Ireland
    Hook Head SAC

    CROGHAN

    Good diving all year

    Protected Area

    Hook Head SAC

    Why dive here

    With 185+ marine species recorded in the area - including blue sharks, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - CROGHAN offers some of South Coast's richest wreck diving. Water ranges 9-15°C, warmest July, August, September.

    Best timeYear-round
    WetsuitA drysuit
    Marine lifeBlue Sharks, Dolphins, Dwarf Minke Whales, Humpback Whales and Ocean Sunfish (Mola Mola) · 185+ species recorded
    Water9-15°C · warmest July, August, September
    CharacterWreck dive · max 10m
    StandoutExceptional marine biodiversity

    Croghan, off Hook Head, isn't your typical Irish wreck. Forget your deep, dark, silty wrecks. This 51-metre motor vessel ran aground in 1973, and after being abandoned, the hull was penetrated, leaving a shallow, broken up site at just 10 metres. We love it because it’s wonderfully accessible, especially on a calm day with good visibility, which for the South Coast means anything over 5 metres. What you find now is a fantastic scatter of ribs and plating, really colonised by the sea. It feels less like a ship and more like an artificial reef. You’ll weave through metalwork that’s heavily encrusted with dead man’s fingers, barnacles, and a surprising amount of kelp swaying gently with the surge. Look closely in the nooks and crannies and you'll spot plenty of blennies darting about, dogfish often resting on the seabed nearby, and sometimes a decent-sized pollack lurking. It’s a great site for newer wreck divers to get a feel for exploring a scattered wreck without the pressure of depth or overhead environments. Bring a good torch, even in daylight, to really appreciate the colours on the encrusting life.

    Typical CROGHAN 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

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    Cold water this month (avg 14°C). Drysuit or thick wetsuit (7mm+) recommended.

    Today06:4617:4510h 59m daylightGolden hour 16:58

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    Conditions

    Ocean conditions, forecast and tides for CROGHAN

    CROGHAN Ocean Conditions

    Monthly averages for CROGHAN, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (51.71, -8.38) (9km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    14°C

    57°F · Range: 12.3–14.8°C

    Air Temperature

    12°C

    54°F

    Wind Speed

    7.84 m/s

    15.2 knots

    Atmospheric Pressure

    1008.6 hPa

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data

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