15-35m
    Cozumel, Mexico
    Caribe Mexicano

    Agua Negra Cozumel

    Good diving all year

    Protected Area

    Caribe Mexicano

    Why dive here

    With 177+ marine species recorded in the area - including barracuda, bull sharks, dolphins, eagle rays and nurse sharks - Agua Negra Cozumel offers some of Cozumel's richest reef diving. Water ranges 27-30°C, warmest August, September, October.

    Best timeYear-round
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBarracuda, Bull Sharks, Dolphins, Eagle Rays and Nurse Sharks · 177+ species recorded
    Water27-30°C · warmest August, September, October
    CharacterReef dive · max 15-35m
    StandoutExceptional marine biodiversity

    Agua Negra isn't your typical reef dive; it's Cozumel’s blackwater offering, and honestly, we’re completely hooked. You head out a few miles from shore, drop in at dusk, and spend your dive at a maximum of 18 meters, drifting in the inky blackness. It feels like you’re floating in space, with only the glow of your torch to illuminate the incredible miniature world migrating up from the deep. We've seen some utterly bizarre and beautiful things here. Think tiny larval crabs and squid, transparent eel larvae, and juvenile fish like baby swordfish or sailfish, no bigger than your finger. The way they reflect your light, darting through the darkness, is mesmerizing. It’s a completely different rhythm to reef diving, quieter, more focused. We’d recommend it for divers who are comfortable with good buoyancy and night diving, and who appreciate the truly unique, delicate side of marine life. It’s a special kind of hunt, spotting those almost invisible creatures in the vast open ocean.

    Typical Agua Negra Cozumel Dive Profile

    5m10m15mSafety Stop0m15m max~50 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

    Strong currents typical this month (avg 79 cm/s). Good buoyancy control essential.

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

    Today05:4217:2911h 47m daylightGolden hour 17:00

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    Conditions

    Ocean conditions, forecast and tides for Agua Negra Cozumel

    Agua Negra Cozumel Ocean Conditions

    Monthly averages for Agua Negra Cozumel, sourced from NOAA NDBC + Copernicus Marine (EU) - nearest station: Yucatan Basin - 120 NM ESE of Cozumel, MX (227km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    30°C

    85°F · Range: 28.7–32.3°C

    Air Temperature

    29°C

    84°F

    Current Speed

    78.6 cm/s

    Direction: NE (36.7°)

    Chlorophyll-a

    0.046 mg/m³

    Very clear (oligotrophic)

    Salinity

    35.99 PSU

    Wave Height

    1.1m

    6.7s period

    Wind Speed

    5.5 m/s

    10.7 knots

    Atmospheric Pressure

    1010.7 hPa

    Visibility

    24.1 nmi

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

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