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Rutaki Passage

Avanui: Deepest Passage for Diving in Rarotonga, Cook Islands

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

6.2
Above Average

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

beginner
advanced

Weather Conditions for Rutaki Passage

Wave Height

2.24m

Wind Speed

18 m/s

Water Temp

24.8°C

Visibility

31.54km

Cloud Cover

99%

Wave Period

11.9s

Air Temperature

22.3°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Rutaki Passage
Alpha

Dive Score Chart for Rutaki Passage

Best time to dive: 16:00 with score 5.962000000000001/10. Water conditions: Waves 2.46m, Wind 18.1 m/s.Best night dive time: 21:00 with score 5.425233333333334/10.

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

Sunrise at Rutaki Passage: 06:00
Sunset at Rutaki Passage: 18:00

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.

🌞
Best Overall
16:00

Score: 6.0/10
Waves: 2.46m (13.55s), Wind: 18.1 m/s

🌙
Best Night
21:00

Score: 5.4/10
Waves: 2.9m, Wind: 15.8 m/s

Seasonal Analysis for Rutaki Passage
Alpha

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

Spring

Avg. Score: 9.5/10

Spring provides excellent diving conditions with improving water temperatures and typically good visibility.

Best Months for Rutaki Passage

May
Score: 10.0
July
Score: 10.0
March
Score: 9.5

Ideal Conditions for Rutaki Passage

Water Temp

Thermometer Emoji

25.4°C / 77.7°F

May

Visibility

Telescope Emoji

18.6m / 61.0ft

July

Wave Height

Wave Emoji

0.2m / 0.7ft

February

Wave Period

Wave Emoji

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 February with average wave heights of 0.2m and wave periods of 8.0s. The most comfortable wave conditions are in February 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 February to April, 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 - Jul 1, 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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