OHINAU ISLAND
Protected Area
Rabbit Island
Why dive here
With 72+ marine species recorded in the area - including blue sharks, dolphins, hammerhead sharks, humpback whales and seahorses - OHINAU ISLAND offers some of Goat Island & Hauraki Gulf's richest reef diving. Water ranges 15-21°C, warmest January, February, March.
Ohinau Island is a bit of a local secret, tucked away in the Mercury Island group. We’ve had some cracking dives here, particularly around the southern tip, but you do need to be mindful of the currents – they can really pick up in the mid-water, giving you a proper workout. Visibility averages around 9 metres, which for this part of New Zealand, is pretty decent. What we love about Ohinau is the sheer amount of fish. You’ll find schools of New Zealand demoiselles darting amongst the kelp, and we’ve often seen big greenbone and green wrasse cruising the reef. Keep an eye out for southern reef squid; they’re often hanging around the rocky outcrops, flashing their colours. The max depth is around 12 metres, so it’s a brilliant spot for newer divers, or for anyone wanting a relaxed second dive. If you’re lucky, you might even spot a rig or a New Zealand draughtboard shark tucked under a ledge. We always suggest dropping in early to beat any boat traffic and get the best of the light filtering through the kelp.
Nearest Dive Centres to OHINAU ISLAND
Dive shops near OHINAU ISLAND
Cathedral Cove Dive Ltd
Salt Aotearoa
Dive Zone Whitianga
Reviews for OHINAU ISLAND
Conditions
Ocean conditions, forecast and tides for OHINAU ISLAND
OHINAU ISLAND Ocean Conditions
Monthly averages for OHINAU ISLAND, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-36.93, 175.86) (22km away)
October Averages
Sea Temperature
16°C
60°F · Range: 14.5–16.9°C
Current Speed
1.41 cm/s
Direction: SE (135°)
Chlorophyll-a
0.497 mg/m³
Moderate productivity
Salinity
34.91 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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