Grand Cayman, Cayman Islands
    Frank Sound RpZ (Grand Cayman)

    Kelly’s Caverns

    Best months: Dec–Mar

    Protected Area

    Frank Sound RpZ (Grand Cayman)

    Why dive here

    With 327+ marine species recorded in the area - including barracuda, bull sharks, oceanic whitetip sharks, orcas and sea turtles - Kelly’s Caverns 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
    StandoutExceptional marine biodiversity

    Kelly's Caverns feels like a secret handshake with Grand Cayman’s West End. It's a proper playground, a site we’ve returned to countless times, always finding something new to appreciate. The main draw for us is that network of canyons and tunnels. Dropping in, you're immediately in this maze-like structure, carved from the reef, letting shafts of sunlight pierce through the openings. It’s not a true overhead environment, more like swim-throughs and overhangs, which makes it accessible for anyone comfortable with confined spaces. We often spot schools of Blackfish darting in and out, and there’s always a Roughhead Triplefin or a Redlip Blenny peeking from a crevice. Our favourite part, though, is probably the transition to the mini-wall and rubble field. This is where the macro life really shines. Keep your eyes peeled for those tiny, perfectly camouflaged creatures – we’ve had excellent luck finding the Notchtongue Goby and the elusive Purple Crowned Sea Goddess nudibranch here. Look closely at the sand patches too; the Warteye Stargazer does an incredible job of blending in, but they’re there. The site suits divers who enjoy exploring nooks and crannies, who appreciate the smaller wonders, and who don't mind a gentle current occasionally. It’s a site that rewards a slow, deliberate dive, letting you really absorb the details.

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

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    Conditions

    Ocean conditions, forecast and tides for Kelly’s Caverns

    Kelly’s Caverns Ocean Conditions

    Monthly averages for Kelly’s Caverns, 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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