Coffins Patch
Coffins Patch Sanctuary Preservation Area (SPA) is a premier diving and snorkeling destination in the Middle Keys, located just four miles off Key Colony Beach in Monroe County, Florida, United States. With a maximum depth of 25-30 feet/7-9m and excellent visibility of 12m, this site offers an unforgettable underwater experience for divers of all levels, from beginners to advanced.
Divers exploring Coffins Patch will be treated to a diverse marine ecosystem teeming with vibrant marine life. Tangs, jacks, stingrays, nurse sharks, groupers, lobster, butterflyfish, and turtles are just some of the incredible species that call this sanctuary home. The underwater landscape is adorned with breathtaking hard and soft corals, adding to the beauty and allure of this dive site.
Whether you are a novice diver looking to embark on your first underwater adventure or an experienced diver seeking a new and exciting dive spot, Coffins Patch SPA has something for everyone. Immerse yourself in the pristine waters of this magnificent underwater sanctuary and discover the wonders that lie beneath the surface.
Divers exploring Coffins Patch will be treated to a diverse marine ecosystem teeming with vibrant marine life. Tangs, jacks, stingrays, nurse sharks, groupers, lobster, butterflyfish, and turtles are just some of the incredible species that call this sanctuary home. The underwater landscape is adorned with breathtaking hard and soft corals, adding to the beauty and allure of this dive site.
Whether you are a novice diver looking to embark on your first underwater adventure or an experienced diver seeking a new and exciting dive spot, Coffins Patch SPA has something for everyone. Immerse yourself in the pristine waters of this magnificent underwater sanctuary and discover the wonders that lie beneath the surface.
Diving Conditions Score for Coffins Patch
7.8
GoodGood diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Coffins Patch
Depth
7m
Visibility
12m
Experience Level
beginner
advanced
Weather Conditions for Coffins Patch
Wave Height
0.48m
Wind Speed
5.7 m/s
Water Temp
31°C
Visibility
18.9km
Cloud Cover
1%
Wave Period
4.35s
Air Temperature
28.8°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for Coffins Patch
Alpha
Dive Score Chart for Coffins Patch
Best time to dive: 15:00 with score 8.275736507936507/10. Water conditions: Waves 0.52m, Wind 8.4 m/s.Best night dive time: 2:00 with score 8.466666666666667/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Coffins Patch: 06:00
Sunset at Coffins Patch: 18:00
Optimal diving conditions at Coffins Patch 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
2:00Score: 8.5/10
Waves: 0.42m (4.2s), Wind: 2.6 m/s
Safest Overall
15:00Score: 8.3/10
Waves: 0.52m (4.2s), Wind: 8.4 m/s
Best Day
15:00Score: 8.3/10
Waves: 0.52m, Wind: 8.4 m/s
Seasonal Analysis for Coffins PatchAlpha
Historical patterns and best seasons for diving at Coffins Patch
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 Coffins Patch
Winter
Avg. Score: 8.8/10
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Coffins Patch
February
Score: 8.8
December
Score: 8.8
January
Score: 8.7
Ideal Conditions for Coffins Patch
Water Temp
26.5°C / 79.7°F
September
Visibility
11.7m / 38.4ft
November
Wave Height
2.3m / 7.5ft
November
Wave Period
8.0s
January
Seasonal Insights for Coffins Patch
Coffins Patch shows typical northern hemisphere patterns with July being the warmest month (28.4°C) and January the coldest (17.8°C). The calmest conditions typically occur in November with average wave heights of 2.3m 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). February is usually the driest month with 0.1mm 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 20, 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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