10-30m
    Grand Cayman, Cayman Islands
    North West Point - West Bay Cemetery (Grand Cayman)

    Rainbow Reef

    Best months: Dec–Mar

    Protected Area

    North West Point - West Bay Cemetery (Grand Cayman)

    Why dive here

    With 327+ marine species recorded in the area - including barracuda, bull sharks, oceanic whitetip sharks, orcas and sea turtles - Rainbow Reef offers some of Grand Cayman's richest wreck 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
    CharacterWreck dive · max 10-30m
    StandoutExceptional marine biodiversity

    Rainbow Reef on Grand Cayman is one of those shallower spots we always recommend, especially if you’re looking to really slow down and appreciate the details. At a maximum depth of 9m, it’s a site for lingering, for spotting the smaller stuff that often gets overlooked when you’re deeper. We love how the light plays on the coral formations here, especially around midday. You’ll find some great examples of grooved brain coral and great star coral, creating plenty of nooks and crannies. Keep your eyes peeled for the resident long-snout seahorses, they’re often tucked away. We’ve also had some excellent encounters with goldspot gobies and checkerboard frillfins here. It’s not about huge pelagics, it’s about the intricate ecosystem within the reef itself. Visibility often sits around 18m, making it perfect for photography or just soaking in the colours. It’s a brilliant dive for newer divers, but seasoned pros will appreciate the chance to really explore without the pressure of depth limits.

    Typical Rainbow Reef 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.

    Today06:1918:0711h 48m daylightGolden hour 17:38

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    Conditions

    Ocean conditions, forecast and tides for Rainbow Reef

    Rainbow Reef Ocean Conditions

    Monthly averages for Rainbow Reef, 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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