25-40m
    Grand Cayman, Cayman Islands
    Radio Mast - Sand Bluff (Grand Cayman)

    Pat’s Wall

    Best months: Dec–Mar

    Protected Area

    Radio Mast - Sand Bluff (Grand Cayman)

    Why dive here

    With 327+ marine species recorded in the area - including barracuda, bull sharks, oceanic whitetip sharks, orcas and sea turtles - Pat’s Wall offers some of Grand Cayman's richest reef diving. Water ranges 27-31°C, warmest August, September, October.

    Best timeDec–Mar
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBarracuda, Bull Sharks, Oceanic Whitetip Sharks, Orcas and Sea Turtles · 327+ species recorded
    Water27-31°C · warmest August, September, October
    CharacterReef dive · max 25-40m
    StandoutExceptional marine biodiversity

    Pat’s Wall is one of those East End dives where you really feel the scale of the Cayman Trench. We love that it’s just a five-minute boat ride, but it feels a world away once you drop in. The wall itself starts around 18 metres, then just… drops. You’ll find these incredible coral spurs that jut out, creating canyons you can weave through, sometimes so narrow you’re brushing against the sponges. We’ve seen schools of broad shad so thick here they shimmer like a liquid silver curtain, momentarily blocking out the blue. Keep an eye out for yellowtail parrotfish grazing on the reef, and grey snapper hanging out under ledges. We’ve had a few encounters with chain morays peeking out of holes, and the sponges, especially the barrel sponges, are genuinely massive. It’s a great spot for advanced divers who appreciate a good wall and aren't afraid of a bit of depth. The currents here can sometimes pick up a bit, especially on the corners, so stay aware of your positioning.

    Typical Pat’s Wall Dive Profile

    10m20mSafety Stop0m25m 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 25m - Advanced Open Water certification recommended.

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

    Today06:1818:0611h 48m daylightGolden hour 17:37

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    Conditions

    Ocean conditions, forecast and tides for Pat’s Wall

    Pat’s Wall Ocean Conditions

    Monthly averages for Pat’s Wall, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (19.38, -81.32) (5km away)

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    October Averages

    Sea Temperature

    30°C

    87°F · Range: 29.1–31.8°C

    Current Speed

    4.47 cm/s

    Direction: NW (296.6°)

    Chlorophyll-a

    0.045 mg/m³

    Very clear (oligotrophic)

    Salinity

    36.14 PSU

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

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