

Best for advanced divers, 10-25m, boat entry, moderate current.
Gap Bluff is a boat-access wall and drop-off dive located off the South Head of Watsons Bay. The site features a varied reef profile with a wall descending to 25 metres, averaging 15 metres in depth. Divers encounter sponge gardens and sea tulips along the wall. Due to moderate currents and depths reaching 25 metres, this site is suited for advanced divers. Visibility ranges from 5 to 18 metres and can change quickly. Boat entry is required, and divers should remain close to the wall to manage currents. Water temperatures fluctuate between 18C and 23C throughout the year.
-33.84126, 151.28618
May and September sit in the sweet spot for this site: water temperature drops enough to bring out the Port Jackson sharks and giant cuttlefish, and visibility tends to be at its most consistent. Time your entry for the slack before the tide pushes through, as the current along the wall can build quickly and make the drop-off section significantly more demanding.
Leaving Sydney Harbour, turn south and run along the shore for a few kilometres till you see the lower cliff of The Gap. Anchor at 33° 50.6381' S 151° 17.2120' E.
Recorded at this site
Depth
10-25m
Visibility
5-18m
Skill Level
Advanced
Entry
Boat
Boat required
Water Temp
18-23°C
Current
Moderate
Best Time
May, Sep
No, this site is intended for advanced divers due to the significant depth, moderate currents, and the requirement for solid buoyancy control.
The site features a wall that descends to 25 metres, with an average depth of 15 metres.
Gap Bluff is a boat-access site. Divers are dropped directly into the area, which may have strong currents.
May and September are considered the best months, as they offer more consistent visibility and cooler water temperatures.
Divers must manage deep water, potential for low visibility, and moderate to strong currents. It is recommended to time entries for the slack tide.
Diving at Gap Bluff in Sydney requires the following certifications: Advanced. Always dive within your training limits.
A 5mm wetsuit is recommended for diving at Gap Bluff in Sydney. Water temperatures range from 18°C to 23°C.
Expect moderate currents at Gap Bluff in Sydney. Good buoyancy control and some drift diving experience is helpful.
Visibility at Gap Bluff in Sydney typically ranges from 5 metres to 18 metres. Conditions vary with weather, tides, and seasons.