Florida Keys, United States
    Rock Key Sanctuary Preserva Sanctuary

    Rock Key

    Best months: Apr–Jun

    Protected Area

    Rock Key Sanctuary Preserva Sanctuary

    Why dive here

    With 87+ marine species recorded in the area - including bull sharks, dolphins, hammerhead sharks, seahorses and sea turtles - Rock Key offers some of Florida Keys's richest reef diving. Water ranges 19-32°C, warmest July, August, September.

    Best timeApr–Jun
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBull Sharks, Dolphins, Hammerhead Sharks, Seahorses and Sea Turtles · 87+ species recorded
    Water19-32°C · warmest July, August, September
    CharacterReef dive
    StandoutRich in charismatic marine life

    We love Rock Key for its sheer convenience, and it’s always a solid bet for a relaxed dive out of Key West. It’s a shallow spot, usually around 8-10 meters, making it perfect for longer bottom times and a great choice if you’re newer to diving or just want an easy cruise. The reef here is mostly low-profile coral formations, plenty of finger coral and some nice pillar coral stands that always catch our eye. Look closely in the nooks and crannies – we often spot Yellowhead Jawfish peeking out of their burrows and American Pugnose Pipefish doing their best impression of seagrass blades. Schools of French Grunts and Schoolmasters drift lazily over the coral, a constant, shimmering curtain of silver. We’ve even had the occasional Sandbar Shark cruise by on deeper visits. Visibility is generally good, often 15-20 meters, though it can kick up a bit after a strong southerly blow. We’d suggest going early in the morning to beat the boat traffic; it tends to get a little busy later in the day. It’s a really pleasant dive, calm and full of those smaller, often overlooked details that make the Keys reefs so rewarding.

    Today06:2418:0711h 43m daylightGolden hour 17:36

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    Conditions

    Ocean conditions, forecast and tides for Rock Key

    Rock Key Ocean Conditions

    Monthly averages for Rock Key, sourced from NOAA NDBC + Copernicus Marine (EU) - nearest station: 8725520 - Fort Myers, FL (28km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    27°C

    81°F · Range: 20.9–31.1°C

    Air Temperature

    26°C

    79°F

    Current Speed

    0 cm/s

    Direction: S (180°)

    Salinity

    35.98 PSU

    Wind Speed

    2.7 m/s

    5.2 knots

    Atmospheric Pressure

    1014.5 hPa

    Based on 5 years of monitoring data · Data sources: NOAA NDBC + Copernicus Marine (EU)

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