46m
    Cornwall & Devon, United Kingdom
    Brighton to Newhaven Cliffs

    GLENARM HEAD (POSSIBLY)

    Best months: Jul–Sep

    Protected Area

    Brighton to Newhaven Cliffs

    Why dive here

    With 176+ marine species recorded in the area - including blue sharks, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - GLENARM HEAD (POSSIBLY) offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.

    Best timeJul–Sep
    WetsuitA 5mm wetsuit
    Marine lifeBlue Sharks, Dolphins, Dwarf Minke Whales, Humpback Whales and Ocean Sunfish (Mola Mola) · 176+ species recorded
    Water10-18°C · warmest July, August, September
    CharacterWreck dive · max 46m
    StandoutExceptional marine biodiversity

    The *Glenarm Head*, or what we believe to be her, is a proper wreck dive, sitting deep off Brighton. You’re looking at 46 metres, so this is one for the technical crowd, or at least those comfortable with extended bottom times. She was torpedoed in 1918, a casualty of the U-boat war, and that history really seeps into the dive. What we love about this wreck is her sheer scale. At over 100 metres long, you could spend a dozen dives here and still find new nooks. We usually drop onto the bow, which is impressively intact, and then work our way aft. Keep an eye on the ambient light-it fades quickly down here, but the silhouettes of the structure against the green water are something else. The wreck itself is heavily encrusted, with plumose anemones waving like miniature feather dusters in the slight current. Conger eels are always lurking in the deeper holds, and we've had some memorable encounters with large ling slipping through the broken deck plating. It's a sombre, beautiful dive, a real piece of maritime history that demands respect and proper planning.

    Typical GLENARM HEAD (POSSIBLY) Dive Profile

    15m30m45mSafety Stop0m46m max~15 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

    Maximum depth 46m exceeds recreational limits (40m). Technical diving certification and equipment required.

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

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

    Today06:1717:1911h 2m daylightGolden hour 16:35

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    Conditions

    Ocean conditions, forecast and tides for GLENARM HEAD (POSSIBLY)

    GLENARM HEAD (POSSIBLY) Ocean Conditions

    Monthly averages for GLENARM HEAD (POSSIBLY), sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (50.44, -2.73) (3km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    17°C

    62°F · Range: 15.1–17.5°C

    Air Temperature

    13°C

    56°F

    Wind Speed

    8.14 m/s

    15.8 knots

    Atmospheric Pressure

    1011 hPa

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

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