Sombrero Reef
Welcome to Sombrero Reef, a stunning designated Special Protected Area (SPA) and a must-visit scuba diving and snorkeling destination in Marathon, Florida Keys. This picturesque site gets its name from the iconic 142-foot lighthouse situated in the northern part of the SPA region.
Prepare to be enchanted by the vibrant Caribbean marine life that calls Sombrero Reef home. Dive into the crystal-clear waters to encounter magnificent creatures such as nurse and reef sharks, graceful eagle rays, majestic turtles, and elegant stingrays. Swim alongside a plethora of fish species, including snapper, angelfish, grunts, parrotfish, and grouper, creating a mesmerizing underwater spectacle.
Sombrero Reef caters to all diving levels, making it an ideal location for both beginners and experienced divers. Snorkelers will also find this spot a true paradise, with enchanting sights beneath the surface. Whether you are taking your first underwater breaths or seeking a new diving adventure, Sombrero Reef offers an unforgettable experience for all.
With excellent visibility of 13 meters and a maximum depth of 9 meters, divers and snorkelers alike will be treated to clear, awe-inspiring views of the underwater world. Located in Monroe County, Florida, United States, Sombrero Reef is easily accessible and is just waiting to be explored.
Unleash your inner explorer and dive into the enchanting waters of Sombrero Reef, a hidden gem in the heart of the United States. Discover the beauty and wonders that lie beneath as you embark on an unforgettable underwater journey.
Prepare to be enchanted by the vibrant Caribbean marine life that calls Sombrero Reef home. Dive into the crystal-clear waters to encounter magnificent creatures such as nurse and reef sharks, graceful eagle rays, majestic turtles, and elegant stingrays. Swim alongside a plethora of fish species, including snapper, angelfish, grunts, parrotfish, and grouper, creating a mesmerizing underwater spectacle.
Sombrero Reef caters to all diving levels, making it an ideal location for both beginners and experienced divers. Snorkelers will also find this spot a true paradise, with enchanting sights beneath the surface. Whether you are taking your first underwater breaths or seeking a new diving adventure, Sombrero Reef offers an unforgettable experience for all.
With excellent visibility of 13 meters and a maximum depth of 9 meters, divers and snorkelers alike will be treated to clear, awe-inspiring views of the underwater world. Located in Monroe County, Florida, United States, Sombrero Reef is easily accessible and is just waiting to be explored.
Unleash your inner explorer and dive into the enchanting waters of Sombrero Reef, a hidden gem in the heart of the United States. Discover the beauty and wonders that lie beneath as you embark on an unforgettable underwater journey.
Diving Conditions Score for Sombrero Reef
7.6
GoodGood diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Sombrero Reef
Depth
9m
Visibility
13m
Experience Level
beginner
Weather Conditions for Sombrero Reef
Wave Height
0.22m
Wind Speed
20.5 m/s
Water Temp
30.6°C
Visibility
19.1km
Cloud Cover
1%
Wave Period
3.4s
Air Temperature
29.4°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for Sombrero Reef
Alpha
Dive Score Chart for Sombrero Reef
Best time to dive: 8:00 with score 8.59094761904762/10. Water conditions: Waves 0.26m, Wind 7.2 m/s.Best night dive time: 0:00 with score 8.523107490636704/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Sombrero Reef: 06:00
Sunset at Sombrero Reef: 18:00
Optimal diving conditions at Sombrero 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
8:00Score: 8.6/10
Waves: 0.26m (4.55s), Wind: 7.2 m/s
Best Night
0:00Score: 8.5/10
Waves: 0.36m, Wind: 1.9 m/s
Seasonal Analysis for Sombrero ReefAlpha
Historical patterns and best seasons for diving at Sombrero 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 Sombrero Reef
Winter
Avg. Score: 10.0/10
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Sombrero Reef
January
Score: 10.0
February
Score: 10.0
December
Score: 10.0
Ideal Conditions for Sombrero Reef
Water Temp
22.5°C / 72.5°F
June
Visibility
20.1m / 65.9ft
October
Wave Height
0.2m / 0.7ft
January
Wave Period
8.0s
January
Seasonal Insights for Sombrero Reef
Sombrero Reef shows typical northern hemisphere patterns with June being the warmest month (22.5°C) and December the coldest (18.5°C). The calmest conditions typically occur in January with average wave heights of 0.2m and wave periods of 8.0s. The most comfortable wave conditions are in January 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 0.0mm of precipitation. For beginners, the best time to visit would be during January to March, 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 22, 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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