Neptune Islands
Protected Area
Neptune Islands
Why dive here
With 93+ marine species recorded in the area - including blue whales, dolphins, dwarf minke whales, great white sharks and hammerhead sharks - Neptune Islands offers some of South Australia's richest diving. Water ranges 14-21°C, warmest January, February, March.
Diving the Neptune Islands is all about one thing: great white sharks. This isn't your typical coral reef dive, but if getting in the water with apex predators sounds like your kind of adventure, then it’s an experience you’ll remember. We're talking cage diving here, either at the surface or dropped to the seafloor, putting you face-to-face with these powerful creatures. It’s cold water, nutrient-rich stuff, so expect impressive, sometimes dramatic, encounters rather than colourful fish. Definitely not for everyone, but if you’re curious about great whites, this is where you come to see them in Australia.
Reviews for Neptune Islands
Conditions
Ocean conditions, forecast and tides for Neptune Islands
Neptune Islands Ocean Conditions
Monthly averages for Neptune Islands, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (-35.15, 137.82) (12km away)
October Averages
Sea Temperature
17°C
62°F · Range: 14.8–18°C
Air Temperature
16°C
60°F
Wind Speed
6.66 m/s
12.9 knots
Atmospheric Pressure
1016.5 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
Plan & book
Ways to dive South Australia, from day trips to liveaboards.
Day trips & courses
via GetYourGuideGuided dives, courses and snorkel trips with instant booking.
Find dive trips in South AustraliaPlaces to stay
via Booking.comHotels and dive resorts near South Australia.
Search stays in South AustraliaDive insurance
Most travel insurance excludes or limits scuba. Check what you need before you go.
Dive insurance explainedPartner links: we may earn a commission if you book, at no extra cost to you. How we make money
Where to Stay near Neptune Islands
Prices from Booking.com. We may earn a commission at no extra cost to you.