The Sisters
Protected Area
Rileys Lookout
Why dive here
With 35+ marine species recorded in the area - including humpback whales, seahorses and sperm whales - The Sisters offers some of Kaikōura's richest drift diving. Water ranges 10-17°C, warmest January, February, March.
The Sisters, two craggy rocks poking out of the water northeast of Barney's Rock, are a Kaikōura favourite of ours, especially when the conditions line up. It’s a 15 to 20 minute ride south from South Bay Marina, and while the average visibility is around 8m, we’ve had days where it’s pushed 15m, letting you really appreciate the scale of those pinnacles. Dropping in, you feel the cool bite of the water, a stark contrast to the vibrancy you find amongst the rocks. We love exploring the crevices and overhangs, often spotting nudibranchs clinging to the walls, their colours popping against the darker rock. Keep an eye out for crayfish tucked into the shadows – they're everywhere here. There’s a certain thrill to finding a curious seal pup darting between the kelp fronds. We’ve even seen dusky dolphins pass by on the surface as we're gearing up, a real treat. This site suits divers who appreciate a good hunt for macro life and aren't put off by cooler water or the occasional surge. It’s a raw, wild kind of beauty, a true taste of New Zealand diving.
Typical The Sisters Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Drift dive - carry a surface marker buoy (SMB) and stay with your group. Brief the current direction before entry.
Cold water this month (avg 12°C). Drysuit or thick wetsuit (7mm+) recommended.
Always perform a 3-minute safety stop at 5m before surfacing.
Nearest Dive Centres to The Sisters
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Conditions
Ocean conditions, forecast and tides for The Sisters
The Sisters Ocean Conditions
Monthly averages for The Sisters, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-42.41, 173.71) (50km away)
October Averages
Sea Temperature
12°C
54°F · Range: 10.8–14.6°C
Current Speed
14.42 cm/s
Direction: SW (213.7°)
Chlorophyll-a
0.413 mg/m³
Moderate productivity
Salinity
35.08 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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