Ngaio Rock
Protected Area
Poor Knights Islands
Why dive here
With 79+ marine species recorded in the area - including blue sharks, dolphins, hammerhead sharks, humpback whales and orcas - Ngaio Rock offers some of Poor Knights Islands's richest reef diving. Water ranges 15-22°C, warmest January, February, March.
Ngaio Rock is one of those sites that just feels right, a proper Poor Knights classic. It's a stout chunk of rock rising from a sandy bottom around 20 metres, and we love hugging its walls. The reef here is just smothered in growth – sponges, anemones, and a kaleidoscope of ascidians. You'll find butterfly perch fluttering in every crevice and often see schools of blue maomao thick enough to cast shadows. Our favourite move here is a slow circumnavigation. It's not a huge site, so you can take your time, peering under ledges for octopus or the vibrant Luculentus Wrasse. Keep an eye on the sand too; we’ve spotted Southern Eagle Rays cruising by more than once. The maximum depth of 24 metres means it's pretty accessible for most certified divers, and the sheltered nature means it’s a good fallback when other spots are getting a bit surgey. It’s a consistently rewarding dive, perfect for photographers or anyone who just wants to soak up the unique Poor Knights vibe.
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Reviews for Ngaio Rock
Conditions
Ocean conditions, forecast and tides for Ngaio Rock
Ngaio Rock Ocean Conditions
Monthly averages for Ngaio Rock, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-35.84, 174.61) (14km away)
October Averages
Sea Temperature
16°C
60°F · Range: 14.8–17.1°C
Current Speed
11.4 cm/s
Direction: SE (142.1°)
Chlorophyll-a
0.388 mg/m³
Moderate productivity
Salinity
35.44 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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