3 mile Bommie
Protected Area
Bird Island
Why dive here
With 199+ marine species recorded in the area - including blue sharks, bull sharks, dolphins, dugongs and great white sharks - 3 mile Bommie offers some of Sydney & New South Wales's richest cave diving. Water ranges 18-23°C, warmest January, February, March.
The 3 Mile Bommie, just off The Entrance, is one of those sites that always delivers. We love the sheer scale of it, a proper reef system covering 30 hectares, not just a patch. We’re often treated to the sight of grey nurse sharks cruising through the deeper sections, an always impressive encounter, and the wobbegongs here are wonderfully placid. Keep an eye out for the big schools of yellowtail and bream that seem to perpetually swirl around the bommie’s edges; the sun filtering through them is a real moment. If you can time your dive for a calm day, the visibility often bumps up from its average 10m, making the shallow caves and channels even more inviting. This place really suits divers who appreciate a sprawling reef with plenty of nooks and crannies to explore.
Safety Notes
Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.
Nearest Dive Centres to 3 mile Bommie
Dive shops near 3 mile Bommie
CENTRAL COAST DIVERS
FREEDIVING CENTRAL PTY LTD
DIVE SWANSEA
Reviews for 3 mile Bommie
Conditions
Ocean conditions, forecast and tides for 3 mile Bommie
3 mile Bommie Ocean Conditions
Monthly averages for 3 mile Bommie, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (-33.18, 151.63) (7km away)
October Averages
Sea Temperature
20°C
67°F · Range: 18.5–20.7°C
Air Temperature
17°C
63°F
Wind Speed
5.95 m/s
11.6 knots
Atmospheric Pressure
1016.2 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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