San Francisco Reef
Welcome to one of the most popular dive sites in Cozumel, Mexico. This site offers an incredible underwater experience with its steep dropoff, strong currents (making it suitable for more advanced divers), and frequent sightings of majestic eagle rays. The crystal-clear water boasts visibility of 30 meters or better, allowing divers to fully immerse themselves in the beauty of their surroundings. As you explore the depths, you'll be mesmerized by the presence of large barrel sponges lining the walls. This dive site is not only a sanctuary for eagle rays but also home to turtles and deep-water Gorgonians. Whether you're a beginner or an advanced diver, this site promises an unforgettable underwater adventure. Located near Villa Dos in Cozumel, Quintana Roo, Mexico, it's easily accessible for divers seeking an extraordinary experience. Come and discover the wonders that await you at this extraordinary dive site.
Diving Conditions Score for San Francisco Reef
7
GoodGood diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for San Francisco Reef
Depth
19m
Visibility
28m
Experience Level
beginner
advanced
Weather Conditions for San Francisco Reef
Wave Height
1.06m
Wind Speed
13.2 m/s
Water Temp
29.2°C
Visibility
31.62km
Cloud Cover
98%
Wave Period
5.85s
Air Temperature
28.2°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for San Francisco Reef
Alpha
Dive Score Chart for San Francisco Reef
Best time to dive: 14:00 with score 6.5909/10. Water conditions: Waves 1.02m, Wind 14 m/s.Best night dive time: 20:00 with score 6.0781/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at San Francisco Reef: 06:00
Sunset at San Francisco Reef: 18:00
Optimal diving conditions at San Francisco Reef are affected by daylight hours. Sunrise occurs at 06:00 and sunset at 18:00, which impacts visibility and water temperature for scuba diving and snorkeling.
Best Overall
14:00Score: 6.6/10
Waves: 1.02m (5.8s), Wind: 14 m/s
Best Night
20:00Score: 6.1/10
Waves: 1.04m, Wind: 14 m/s
Seasonal Analysis for San Francisco ReefAlpha
Historical patterns and best seasons for diving at San Francisco Reef
The dive score combines all factors to rate overall diving conditions throughout the year. Higher scores indicate better diving conditions.
Monthly Dive Score Analysis - Seasonal Diving Conditions
Higher values indicate better diving conditions
Seasonal DiveScore Chart
This chart displays monthly diveScore data throughout the year, showing seasonal patterns. The data is presented as a bar chart with an overlaid line graph.Dive scores range from 1 to 10, with 10 being optimal conditions.
Higher values indicate better diving conditions
Best Season for San Francisco Reef
Winter
Avg. Score: 9.5/10
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for San Francisco Reef
January
Score: 9.5
February
Score: 9.5
November
Score: 9.5
Ideal Conditions for San Francisco Reef
Water Temp
27.0°C / 80.6°F
May
Visibility
14.7m / 48.2ft
November
Wave Height
1.1m / 3.6ft
November
Wave Period
8.0s
January
Seasonal Insights for San Francisco Reef
San Francisco Reef shows typical northern hemisphere patterns with July being the warmest month (27.9°C) and January the coldest (20.2°C). The calmest conditions typically occur in November with average wave heights of 1.1m and wave periods of 8.0s. The most comfortable wave conditions are in November with a low wave steepness ratio, creating gentler swells. January offers the longest wave periods (8.0s), creating more comfortable and predictable conditions for boat entries and exits. Ocean currents are slowest in January (0.5m/s) and strongest in January (0.5m/s). January is usually the driest month with 0.4mm of precipitation. For beginners, the best time to visit would be during November to January, when ocean conditions are calmer with long-period waves and currents are typically weaker. Experienced divers might enjoy the challenges and potentially better visibility during the shoulder seasons, with moderate currents that can improve marine life encounters.
Last updated: 1 min. ago - Jun 23, 2026
Note: This dive site is not a verified dive site. Please dive with caution. This dive site might have incorrect information by the community.
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