Avaavaroa Passage - Rarotonga

Avaavaroa Passage, for us, is where Rarotonga really flexes its muscles. You drop in and it’s a wide-open blue, feeling more like a channel than a typical passage. The current here can really pick up, pushing you along, so it’s definitely one for advanced divers who are comfortable with drift. We love feeling that effortless glide, watching the reef zip by. What makes Avaavaroa special are the residents. Grey reef sharks are a consistent presence, cruising the deeper sections. We’ve had encounters with groups of them, just circling, assessing. And if you’re lucky, eagle rays often glide through the passage, their distinct profiles unmistakable against the blue. Look closely at the reef walls as you drift; you’ll spot parrotfish chomping away, leaving their characteristic sand trails. We’d suggest a mid-morning dive, when the light penetrates well, illuminating the deeper corals, making the cauliflower coral glow. It’s a sensory experience, the rush of the current, the silent ballet of sharks, and the vibrant reef passing by. This site is our pick for divers seeking that classic South Pacific pelagic encounter without a massive boat trip.

Location: Rarotonga, Cook Islands, Central & South Pacific
Coordinates: -21.260000, -159.720000
Type: reef
Maximum Depth: 12-35m
Difficulty: Advanced

Best Time to Dive in Rarotonga

The warmest water temperatures in Rarotonga occur in January, averaging 26.5°C. The coolest conditions are in December at 26.5°C.

Monthly Water Temperatures

January: 26.5°C (air: 24.8°C)
February: 26.5°C (air: 25.2°C)
March: 26.5°C (air: 25.5°C)
April: 26.5°C (air: 25.0°C)
May: 26.5°C (air: 24.2°C)
June: 26.5°C (air: 22.8°C)
July: 26.5°C (air: 22.3°C)
August: 26.5°C (air: 21.7°C)
September: 26.5°C (air: 22.0°C)
October: 26.5°C (air: 22.1°C)
November: 26.5°C (air: 22.6°C)
December: 26.5°C (air: 24.0°C)

Nearby Dive Sites in Rarotonga

Nearest Dive Centres to Avaavaroa Passage

Marine Life in Rarotonga

Home to 143 recorded species including 102 reef fish, 14 hard corals, 10 sea snails & nudibranchs, 7 sea cucumbers, 2 sea urchins, 2 starfish.

Notable Species

Swordfish (Xiphias gladius) - Reef Fish
Black sea cucumber (Holothuria atra) - Sea Cucumbers
Burrowing urchin (Echinometra mathaei) - Sea Urchins
Greenfish (Stichopus chloronotus) - Sea Cucumbers
Small giant clam (Tridacna maxima) - Clams & Mussels
Manini (Acanthurus triostegus) - Reef Fish
Surf Redfish (Actinopyga mauritiana) - Sea Cucumbers
Staghorn coral (Acropora lutkeni) - Hard Corals
Lemon Peel (Centropyge flavissima) - Reef Fish
Gendarme Fish (Acanthurus olivaceus) - Reef Fish
Prickly Redfish (Thelenota ananas) - Sea Cucumbers
Coral Blenny (Istiblennius edentulus) - Reef Fish
Parrotfish (Thalassoma lutescens) - Reef Fish
Sponsal Cone (Conus sponsalis) - Sea Snails & Nudibranchs
cowry (Monetaria moneta) - Sea Snails & Nudibranchs
Staghorn coral (Acropora nasuta) - Hard Corals
Staghorn coral (Acropora hyacinthus) - Hard Corals
Bottleneck Sea Cucumber (Holothuria (Thymiosycia) impatiens) - Sea Cucumbers
Frigid Cone (Conus frigidus) - Sea Snails & Nudibranchs
Pearl-spotted wrasse (Halichoeres margaritaceus) - Reef Fish

Recommended Packing List for Avaavaroa Passage

Based on average water temperature of 26.5°C.

Shorty or Rashguard - warm 26°C water needs minimal exposure protection
Mask - essential for every dive
Fins
BCD - buoyancy compensator
Regulator - your most safety-critical piece of gear
Dive Computer - tracks depth, time, and NDL
Surface Marker Buoy (SMB) - essential for boat pickups
Dive Torch - useful for crevices and colour at depth
Underwater Camera - capture your diving memories