Captain Grumpy
Discover the mesmerizing underwater world at this captivating dive site. While the origin of its name remains a mystery, the sheer beauty of the marine life here will leave you in awe. Dive into crystal clear waters with a visibility of 13m and descend to a maximum depth of 14m.
Beginners and advanced divers alike will find delight in the abundant array of marine species. Immerse yourself in the company of vibrant schools of yellowtail snapper and tomtates. The waters are also home to a variety of eels, including the striking green moray, the elusive spotted moray, and the formidable viper eel. Prepare to be amazed as you encounter numerous nurse sharks gracefully gliding through the depths, and keep an eye out for lobsters camouflaging amongst the rocky terrain.
Located near Windley Key, Islamorada, in Monroe County, Florida, this dive site in the United States offers a truly remarkable and unforgettable underwater adventure. Whether you are a beginner seeking to explore the wonders of the ocean or an advanced diver looking for a new and thrilling experience, this site promises to leave you with lasting memories of an extraordinary dive. So gear up, dive in, and let the magic of this dive site captivate your senses.
Beginners and advanced divers alike will find delight in the abundant array of marine species. Immerse yourself in the company of vibrant schools of yellowtail snapper and tomtates. The waters are also home to a variety of eels, including the striking green moray, the elusive spotted moray, and the formidable viper eel. Prepare to be amazed as you encounter numerous nurse sharks gracefully gliding through the depths, and keep an eye out for lobsters camouflaging amongst the rocky terrain.
Located near Windley Key, Islamorada, in Monroe County, Florida, this dive site in the United States offers a truly remarkable and unforgettable underwater adventure. Whether you are a beginner seeking to explore the wonders of the ocean or an advanced diver looking for a new and thrilling experience, this site promises to leave you with lasting memories of an extraordinary dive. So gear up, dive in, and let the magic of this dive site captivate your senses.
Diving Conditions Score for Captain Grumpy
7.8
GoodGood diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Captain Grumpy
Depth
14m
Visibility
13m
Experience Level
beginner
advanced
Weather Conditions for Captain Grumpy
Wave Height
0.28m
Wind Speed
16.3 m/s
Water Temp
30.4°C
Visibility
22km
Cloud Cover
46%
Wave Period
3.4s
Air Temperature
29.4°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for Captain Grumpy
Alpha
Dive Score Chart for Captain Grumpy
Best time to dive: 8:00 with score 8.353782771535581/10. Water conditions: Waves 0.24m, Wind 16.7 m/s.Best night dive time: 3:00 with score 8.299955555555556/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Captain Grumpy : 06:00
Sunset at Captain Grumpy : 18:00
Optimal diving conditions at Captain Grumpy 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: 8.4/10
Waves: 0.24m (4.45s), Wind: 16.7 m/s
Safest Overall
9:00Score: 8.3/10
Waves: 0.22m (4.45s), Wind: 16.2 m/s
Best Night
3:00Score: 8.3/10
Waves: 0.3m, Wind: 3.6 m/s
Seasonal Analysis for Captain Grumpy Alpha
Historical patterns and best seasons for diving at Captain Grumpy
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 Captain Grumpy
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 Captain Grumpy
January
Score: 10.0
February
Score: 10.0
December
Score: 10.0
Ideal Conditions for Captain Grumpy
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 Captain Grumpy
Captain Grumpy 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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