Mana Crack
Mana Crack is an 11-mile long sunken barrier reef, located in Kauaʻi County, Hawaii. As the furthest offshore dive site in the state of Hawaii, it offers a thrilling experience for both beginner and advanced divers. Due to the absence of moorings and potentially strong currents, this dive is exclusively conducted as a live boat dive.
With a remarkable visibility of 21m and a maximum depth of 21m, Mana Crack presents an underwater paradise teeming with diverse marine life. Prepare to encounter magnificent creatures such as large barracuda, spotted eagle rays, white tip reef sharks, java moray, rainbow runner, grey reef shark, stripe belly puffer, and black surgeonfish.
Discover the United States' captivating underwater beauty at Mana Crack, a must-visit dive site for enthusiasts of all levels.
With a remarkable visibility of 21m and a maximum depth of 21m, Mana Crack presents an underwater paradise teeming with diverse marine life. Prepare to encounter magnificent creatures such as large barracuda, spotted eagle rays, white tip reef sharks, java moray, rainbow runner, grey reef shark, stripe belly puffer, and black surgeonfish.
Discover the United States' captivating underwater beauty at Mana Crack, a must-visit dive site for enthusiasts of all levels.
Diving Conditions Score for Mana Crack
7.4
GoodGood diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Mana Crack
Depth
21m
Visibility
21m
Experience Level
beginner
advanced
Weather Conditions for Mana Crack
Wave Height
1.58m
Wind Speed
2.8 m/s
Water Temp
27.1°C
Visibility
14.36km
Cloud Cover
76%
Wave Period
8.2s
Air Temperature
23.4°C
Precipitation
1.1 mm
Detailed 7-Day Diving Forecast for Mana Crack
Alpha
Dive Score Chart for Mana Crack
Best time to dive: 17:00 with score 7.327333333333334/10. Water conditions: Waves 1.58m, Wind 1.5 m/s.Best night dive time: 3:00 with score 7.102166666666667/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Mana Crack: 06:00
Sunset at Mana Crack: 18:00
Optimal diving conditions at Mana Crack 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
17:00Score: 7.3/10
Waves: 1.58m (8.15s), Wind: 1.5 m/s
Best Night
3:00Score: 7.1/10
Waves: 1.56m, Wind: 0.2 m/s
Seasonal Analysis for Mana CrackAlpha
Historical patterns and best seasons for diving at Mana Crack
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 Mana Crack
Winter
Avg. Score: 9.6/10
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Mana Crack
December
Score: 9.7
January
Score: 9.6
February
Score: 9.5
Ideal Conditions for Mana Crack
Water Temp
25.0°C / 77.0°F
July
Visibility
15.6m / 51.2ft
December
Wave Height
0.7m / 2.3ft
December
Wave Period
8.0s
January
Seasonal Insights for Mana Crack
Mana Crack shows typical northern hemisphere patterns with July being the warmest month (25.0°C) and January the coldest (18.1°C). The calmest conditions typically occur in December with average wave heights of 0.7m and wave periods of 8.0s. The most comfortable wave conditions are in December 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 0.3mm of precipitation. For beginners, the best time to visit would be during December to February, 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 - Jul 9, 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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