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Looe Key National Marine Sanctuary

This spur and groove reef formation, located 5 miles off of Ramrod Key in the Florida Keys, is an integral part of the Florida Keys National Marine Sanctuary. With a protected status, the reef ecosystem thrives, making it a vibrant and biodiverse haven for both novice and experienced divers, as well as snorkelers. The maximum depth of this site is 30 ft (10m), making it accessible and enjoyable for all levels of divers.

At this dive site, you will encounter a wide array of popular Caribbean reef fish species, including nurse and reef sharks, rays, eels, turtles, magnificent goliath groupers, and an assortment of colorful reef fish. The presence of these marine creatures adds to the allure of exploring this underwater paradise.

Situated approximately 5 miles off Ramrod Key in the Florida Keys, Looe Key Reef SPA (Special Protected Area) is a remote dive location that can only be reached by boat. The conservation efforts implemented here are evident as anchoring is strictly prohibited, ensuring the preservation of the abundant hard and soft coral formations. Additionally, Looe Key Reef SPA is designated as a "no touch, no take" area, safeguarding the diverse marine fish populations. Over 196 different fish species have been recorded in this area, ranging from elusive cryptics to the impressive 400-pound Goliath Grouper. Sharks, rays, and turtles are frequently sighted, adding to the thrill of exploring this underwater realm.

The reef itself boasts a unique spur and groove formation, with a maximum depth of 30ft (10m). This characteristic allows for extended and leisurely dives, perfect for capturing stunning photographs or observing the mesmerizing marine life. The shallow depths and typically mild currents make Looe Key Reef SPA an ideal destination for beginners and snorkelers. Furthermore, the abundance of marine creatures makes it an attractive site for avid photographers and fish enthusiasts.

If you are seeking an unforgettable diving experience in the United States, look no further than this dive site off Ramrod Key. With a visibility of 12m and a maximum depth of 9m, divers of all levels, especially beginners, will have the opportunity to explore and marvel at the wonders of Looe Key Reef SPA. Plan your trip to this remarkable location, situated in close proximity to Looe Key, and prepare for an underwater adventure like no other.

Diving Conditions Score for Looe Key National Marine Sanctuary

8.1
Very Good

Very good diving conditions!
The score is based on a calculation of the current weather and sea conditions.

Dive Site Overview for Looe Key National Marine Sanctuary

Depth

9m

Visibility

12m

Experience Level

beginner

Weather Conditions for Looe Key National Marine Sanctuary

Wave Height

0.44m

Wind Speed

2.2 m/s

Water Temp

30.7°C

Visibility

18.1km

Cloud Cover

0%

Wave Period

4.6s

Air Temperature

29.4°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Looe Key National Marine Sanctuary
Alpha

Dive Score Chart for Looe Key National Marine Sanctuary

Best time to dive: 17:00 with score 8.42438596491228/10. Water conditions: Waves 0.46m, Wind 6.6 m/s.Best night dive time: 1:00 with score 8.455652173913043/10.

Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.

Sunrise at Looe Key National Marine Sanctuary: 06:00
Sunset at Looe Key National Marine Sanctuary: 18:00

Optimal diving conditions at Looe Key National Marine Sanctuary 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
1:00

Score: 8.5/10
Waves: 0.44m (4.6s), Wind: 3 m/s

🌞
Safest Overall
17:00

Score: 8.4/10
Waves: 0.46m (4.75s), Wind: 6.6 m/s

🌞
Best Day
17:00

Score: 8.4/10
Waves: 0.46m, Wind: 6.6 m/s

Seasonal Analysis for Looe Key National Marine Sanctuary
Alpha

Historical patterns and best seasons for diving at Looe Key National Marine Sanctuary

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 Looe Key National Marine Sanctuary

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 Looe Key National Marine Sanctuary

February
Score: 8.8
December
Score: 8.8
January
Score: 8.7

Ideal Conditions for Looe Key National Marine Sanctuary

Water Temp

Thermometer Emoji

27.5°C / 81.5°F

June

Visibility

Telescope Emoji

11.6m / 38.1ft

October

Wave Height

Wave Emoji

2.4m / 7.9ft

September

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Looe Key National Marine Sanctuary

Looe Key National Marine Sanctuary shows typical northern hemisphere patterns with July being the warmest month (28.4°C) and January the coldest (18.0°C). The calmest conditions typically occur in September with average wave heights of 2.4m and wave periods of 8.0s. The most comfortable wave conditions are in September 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 September to November, 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.

Scoring Legend:
9-10 (Excellent)
7-8 (Good)
5-6 (Average)
3-4 (Poor)
1-2 (Dangerous)

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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