

Best for intermediate divers, 23-38m, boat entry, mild current.
Opera House is a deep reef and cave dive located 5000 metres off the coast of Rottnest Island. The site features a prominent cave structure at depths ranging from 23 to 38 metres, with an average depth of 30 metres. Access is by boat only, and the site is suited for intermediate divers due to the depth and the need for careful air and bottom time management. A mild current is typically present. Water temperatures range from 19C to 23C, though the cave interior is often colder. Divers should be aware of the presence of sharks at this location.
-31.94382, 115.55968
Plan your dive for April or December when conditions tend to be at their most favourable, and check visibility reports locally before committing to the deeper sections of the cave. Be aware that sharks are present on site.
Boat dive only. Charter departures from Hillarys, Fremantle, or Mindarie with transit times of 30 to 60 minutes.
Recorded at this site
Depth
23-38m
Skill Level
Intermediate
Entry
Boat
Boat required
Water Temp
19-23°C
Current
Mild
Typical Dive
30 min
Best Time
Apr, Dec
The site ranges from 23 to 38 metres deep, with an average depth of 30 metres.
No, this is an intermediate-level dive due to the depth and the requirement for precise buoyancy and air management.
Access is by boat only, as the site is located 5000 metres from the shore.
April and December are considered the best months to visit when conditions are most favourable.
Divers should be aware of the presence of sharks and monitor their air and bottom time closely due to the depth.
Diving at Opera House in Perth requires the following certifications: Open Water. Always dive within your training limits.
A 5mm wetsuit is recommended for diving at Opera House in Perth. Water temperatures range from 19°C to 23°C.
The best months to visit Opera House in Perth are April and December. Conditions outside these months can still be good but are less predictable.
Opera House in Perth typically has mild currents that most divers can handle comfortably.