Grand Cayman, Cayman Islands
    Radio Mast - Sand Bluff (Grand Cayman)

    Old Issac’s

    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 - Old Issac’s 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

    Old Issac’s on Grand Cayman is one of those sites we always recommend, especially for a relaxed afternoon dive. The main draw is that ledge, starting around 8 metres and dropping down to a rubble bottom at 18 metres. It’s a gentle drift along the wall, perfect for just letting the current carry you. What we really love here, though, is the coral nursery. Those PVC "trees" are full of growing staghorn and elkhorn coral, and they really pull in the fish. You'll often see schools of blue runners circling, and it’s a great spot for blue parrotfish munching away. Keep an eye out for the redlip blennies too; they’re often tucked into crevices along the top of the ledge. We've had some fantastic encounters with Nassau grouper cruising through the nursery too. The visibility is usually excellent, around 24 metres, making it an easy site to navigate and spot the smaller stuff. It's a great pick for newer divers or anyone looking for a chill dive with plenty of photographic opportunities.

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

    Nearest Dive Centres to Old Issac’s

    Dive shops near Old Issac’s

    View all dive centres in Grand Cayman

    Reviews for Old Issac’s

    Sign in to write a review

    Conditions

    Ocean conditions, forecast and tides for Old Issac’s

    Old Issac’s Ocean Conditions

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

    ExcellentGreatGoodFairPoor★Best monthsThis month

    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)

    Plan & book

    Ways to dive Grand Cayman, from day trips to liveaboards.

    Day trips & courses

    via GetYourGuide

    Guided dives, courses and snorkel trips with instant booking.

    Find dive trips in Grand Cayman

    Places to stay

    via Booking.com

    Hotels and dive resorts near Grand Cayman.

    Search stays in Grand Cayman

    Dive insurance

    Most travel insurance excludes or limits scuba. Check what you need before you go.

    Dive insurance explained

    Partner links: we may earn a commission if you book, at no extra cost to you. How we make money

    Where to Stay near Old Issac’s

    Prices from Booking.com. We may earn a commission at no extra cost to you.

    Back to Grand Cayman