Cozumel, Mexico
    Arrecifes de Cozumel

    Colombia 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 - Colombia Reef offers some of Cozumel's richest wreck 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
    CharacterWreck dive
    StandoutExceptional marine biodiversity

    Colombia Reef gives you a real taste of Cozumel’s drift diving. We love dropping in on the shallower section, around 12 to 15 metres, where the light just floods the coral. You’ll spend most of your dive letting the current gently push you along, hardly finning at all. Keep an eye out for those big barrel sponges and the occasional spotted eagle ray gliding past in the blue. The deeper wall, down to 22 metres, has some fantastic swim-throughs. They’re not tight squeezes, more like open archways in the reef, just big enough to make you feel like you’re exploring something secret. We’ve seen huge schools of grunts hanging out in the overhangs there, practically blocking the way. Our favourite time to dive Colombia Reef is first thing in the morning; the boat traffic is lighter, and the reef feels a bit more vibrant before the crowds arrive. This site is perfect for anyone comfortable with a moderate drift, offering plenty to see without needing to fight the flow.

    Safety Notes

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    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 Colombia Reef

    Colombia Reef Ocean Conditions

    Monthly averages for Colombia 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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