Blackrock
Situated in front of Black Rock, this dive site offers a captivating underwater landscape with a series of reef plateaus that emerge from the depths. The vibrant coral bommies and intriguing swim throughs add to the allure of this location. As you explore the site, be sure to venture into the shallow caverns, which provide an additional element of excitement. With depths ranging from 12 to 28 meters, this dive site caters to both beginner and advanced divers.
Angelfish and moray eels are commonly spotted residents of this underwater sanctuary, while crayfish and lionfish can often be found in the shallow caverns. With a visibility of 16 meters and a maximum depth of 18 meters, divers can enjoy clear views of the fascinating marine life that thrives in this area.
Situated in the Cook Islands, this dive site is conveniently located near Public Park, Nikao, Te-Au-O-Tonga, and Rarotonga. Whether you are a novice or experienced diver, this captivating underwater world offers an unforgettable adventure.
Angelfish and moray eels are commonly spotted residents of this underwater sanctuary, while crayfish and lionfish can often be found in the shallow caverns. With a visibility of 16 meters and a maximum depth of 18 meters, divers can enjoy clear views of the fascinating marine life that thrives in this area.
Situated in the Cook Islands, this dive site is conveniently located near Public Park, Nikao, Te-Au-O-Tonga, and Rarotonga. Whether you are a novice or experienced diver, this captivating underwater world offers an unforgettable adventure.
Diving Conditions Score for Blackrock
6.2
Above AverageDecent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Blackrock
Depth
18m
Visibility
16m
Experience Level
beginner
advanced
Weather Conditions for Blackrock
Wave Height
2.2m
Wind Speed
15.9 m/s
Water Temp
24.8°C
Visibility
40.48km
Cloud Cover
5%
Wave Period
11.1s
Air Temperature
23.3°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for Blackrock
Alpha
Dive Score Chart for Blackrock
Best time to dive: 6:00 with score 5.9656/10. Water conditions: Waves 2.52m, Wind 13.3 m/s.Best night dive time: 5:00 with score 5.464700000000001/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Blackrock: 06:00
Sunset at Blackrock: 18:00
Optimal diving conditions at Blackrock 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
6:00Score: 6.0/10
Waves: 2.52m (11.75s), Wind: 13.3 m/s
Best Night
5:00Score: 5.5/10
Waves: 2.54m, Wind: 14.4 m/s
Seasonal Analysis for BlackrockAlpha
Historical patterns and best seasons for diving at Blackrock
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 Blackrock
Summer
Avg. Score: 9.3/10
Summer offers the warmest water temperatures and generally favorable conditions for all levels of divers.
Best Months for Blackrock
June
Score: 9.5
July
Score: 9.4
May
Score: 9.2
Ideal Conditions for Blackrock
Water Temp
25.4°C / 77.7°F
May
Visibility
11.9m / 39.0ft
July
Wave Height
2.1m / 6.9ft
March
Wave Period
8.0s
January
Seasonal Insights for Blackrock
Blackrock follows southern hemisphere patterns with May being the warmest month (25.4°C) and November the coldest (19.8°C). The calmest conditions typically occur in March with average wave heights of 2.1m and wave periods of 8.0s. The most comfortable wave conditions are in March 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). July is usually the driest month with 0.1mm of precipitation. For beginners, the best time to visit would be during March to May, 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 26, 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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