Chen Rio
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 - Chen Rio offers some of Cozumel's richest diving. Water ranges 27-30°C, warmest August, September, October.
Forget everything you think you know about Cozumel diving. Chen Rio isn't your typical drift. We love it because it’s so… Cozumel, yet completely different. You’re not getting those dramatic drop-offs here. Instead, picture a shallower, labyrinthine reef system, all nooks and crannies, perfect for a slower, more deliberate dive. The big draw for us is the sheer number of things hiding in plain sight. We’ve spent whole dives just poking around the coral heads, finding Key Worm Eels tucked away, or watching the iridescent flash of a Goldspotted Killifish. The reef here feels alive in a different way, less about pelagics soaring past and more about the intricate ecosystems unfolding before you. You’ll definitely see Cero zipping by, and if you're lucky, a big Barracuda lurking. It’s a site that rewards patience. Our insider tip? Go slow. Really slow. Bring a good macro lens if you have one, but even without it, you'll find yourself mesmerized by the sheer volume of smaller life. It's a peaceful contrast to Cozumel's faster-paced diving, perfect for photographers or anyone who just wants to unwind and observe.
Safety Notes
Strong currents typical this month (avg 79 cm/s). Good buoyancy control essential.
Nearest Dive Centres to Chen Rio
Dive shops near Chen Rio
Elite Dive Center
Scuba Mau
Dive Palancar
CARIBE PARADISE DIVERS
Scuba XOC Dive Center Cozumel
Scuba Life Cozumel
Reviews for Chen Rio
Conditions
Ocean conditions, forecast and tides for Chen Rio
Chen Rio Ocean Conditions
Monthly averages for Chen Rio, sourced from NOAA NDBC + Copernicus Marine (EU) - nearest station: Yucatan Basin - 120 NM ESE of Cozumel, MX (227km away)
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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