Rutaki Passage
Avanui boasts the distinction of being the deepest passage on the captivating island of Rarotonga. As divers plunge below the surface, they are plunged into a world of awe-inspiring narrow, vertical canyon walls that surround them. With visibility typically spanning 10 to 15 metres, the passage exudes an enchanting spookiness that adds a thrill to every dive.
This underwater wonderland offers an exhilarating experience, courtesy of its challenging swim-throughs and strong currents. Be prepared for an adrenaline rush as you navigate through this captivating dive site.
Marine life flourishes within Avanui's depths, providing divers with breathtaking encounters. Turtles, whitetip reef sharks, and eagle rays are frequent visitors to this underwater paradise. Keep an eye out for mesmerizing schools of fish gathering at the entrance of the passage. Meanwhile, curious moray eels have made this place their cherished home, adding to the allure of the dive.
Avanui is ideal for both beginner and advanced divers, catering to a range of skill levels. Whether you are just starting your diving journey or seeking an exhilarating challenge, this site promises a memorable and rewarding experience.
Located near Ara Tapu, Puaikura, Rarotonga, Cook Islands, Avanui offers easy access to this captivating dive site. Immerse yourself in the enchanting depths of Avanui and discover the hidden treasures that await beneath the crystal-clear waters of Rarotonga.
Diving Conditions Score for Rutaki Passage
Decent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Rutaki Passage
Depth
20m
Visibility
23m
Experience Level
Weather Conditions for Rutaki Passage
Wave Height
2.38m
Wind Speed
28 m/s
Water Temp
24.6°C
Visibility
31.86km
Cloud Cover
100%
Wave Period
11.85s
Air Temperature
24.8°C
Precipitation
0 mm
Dive Score Chart for Rutaki Passage
Best time to dive: 12:00 with score 6.09/10. Water conditions: Waves 2.36m, Wind 28.9 m/s.Best night dive time: 0:00 with score 5.623333333333334/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Rutaki Passage 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.
Score: 6.1/10
Waves: 2.36m (11.85s), Wind: 28.9 m/s
Score: 5.6/10
Waves: 1.88m, Wind: 25.6 m/s
Seasonal Analysis for Rutaki PassageAlpha
Historical patterns and best seasons for diving at Rutaki Passage
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 Rutaki Passage
Summer
Summer offers the warmest water temperatures and generally favorable conditions for all levels of divers.
Best Months for Rutaki Passage
Ideal Conditions for Rutaki Passage
Water Temp
25.4°C / 77.7°F
May
Visibility
11.8m / 38.7ft
November
Wave Height
2.1m / 6.9ft
March
Wave Period
8.0s
January
Seasonal Insights for Rutaki Passage
Rutaki Passage follows southern hemisphere patterns with May being the warmest month (25.4°C) and November the coldest (19.7°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). November is usually the driest month with 0.2mm 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 20, 2026