5-18m
    Cozumel, Mexico
    Arrecifes de Cozumel

    Chankanaab Reef

    Good diving all year

    Protected Area

    Arrecifes de Cozumel

    Why dive here

    With 177+ marine species recorded in the area - including barracuda, bull sharks, dolphins, eagle rays and nurse sharks - Chankanaab Reef 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 5-18m
    StandoutExceptional marine biodiversity

    Chankanaab Reef is one of those Cozumel sites we always suggest for a relaxed afternoon dive, particularly if you’re staying close to San Miguel. You won’t get the roaring current drifts here like Palancar or Columbia, which frankly, can be a welcome change. Instead, expect a gentler pace, letting you really comb over the smaller stuff. We love spotting the Yellowhead Jawfish, little heads poking from their burrows, sometimes with a clutch of eggs tumbling in their mouths. Keep an eye out for Sand Stargazers too, masters of disguise, buried in the sand with just their eyes peeking out, always good for a quiet chuckle. The reef itself is a mix of coral formations, with plenty of nooks and crannies. We’ve found some surprisingly large Marbled Morays tucked away, and the Candy Basslets are usually flitting about in the deeper sections, their colours really pop against the blue. Visibility is typically good here, often 20 metres plus, making it a comfortable dive for anyone who prefers to take their time and photograph the macro life. It’s not a site for big pelagics, but if you enjoy the smaller, often overlooked inhabitants of the reef, Chankanaab delivers.

    Typical Chankanaab Reef Dive Profile

    5mSafety Stop0m5m 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

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

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

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    Conditions

    Ocean conditions, forecast and tides for Chankanaab Reef

    Chankanaab Reef Ocean Conditions

    Monthly averages for Chankanaab Reef, 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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