

Little Armstrong Bay is a sheltered shore entry reef dive sitting in easy shallow waters of 6 to 7 metres, making it a comfortable choice for beginners getting comfortable in the ocean. Visibility regularly reaches 15 to 20 metres, so you can take your time exploring the coral and watching the fish life without straining to see. You can expect to encounter King George whiting, bream, buff bream, herring, garfish, cod, salmon, and flathead moving around the reef. Current is mild, so navigation is relaxed. Come prepared for cold water, as a wetsuit is essential year-round here.
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The best months to visit are March to May and September to November when conditions tend to be at their most settled. Check locally for current facility availability before heading out.
The site is located 4.5km from the main settlement at Thomson Bay. It can be reached via a 15-minute bike ride, a one-hour walk, or by taking the Rottnest Island Explorer bus to Stop 17.
Water temperatures can drop significantly in winter, requiring appropriate thermal protection.
Depth
6-7m
Visibility
15-20m
Skill Level
Beginner
Entry
Shore
Water Temp
18-23°C
Current
Mild
Best Time
Mar, Apr, May, Sep, Oct, Nov
Little Armstrong Bay in Western Australia offers shallow diving between 6 and 7 metres depth, making it an ideal beginner-friendly site near Perth. The consistent shallow depth range allows for extended bottom times and easy navigation throughout the dive. This shallow profile also contributes to the site's excellent visibility of 15 to 20 metres.
Little Armstrong Bay hosts a diverse range of temperate fish species including King George whiting, herring, cod, bream, and salmon. Divers can also encounter flathead, buff bream, and garfish along the sandy bottom and rocky outcrops. The 15 to 20 metre visibility provides clear views of these local species throughout the shallow dive.
Little Armstrong Bay is an excellent beginner dive site with depths of only 6 to 7 metres and mild currents. Shore entry eliminates boat logistics, and the shallow depth allows new divers to build confidence in a controlled environment. Open Water certification is required to dive this Western Australian site.
The optimal months to dive Little Armstrong Bay are March through May and September through November, avoiding the coldest winter and hottest summer periods. Water temperatures during these months range between 17 and 24 degrees Celsius, with the warmer end of this range occurring in autumn. These periods offer the best balance of comfortable temperatures and good diving conditions near Perth.
Little Armstrong Bay features convenient shore entry, allowing divers to walk directly into the water without requiring a boat. The site is accessible from the beach near Perth in Western Australia, though no specific facilities are available on site. Divers should be prepared for mild currents and plan their entry and exit points accordingly.
An Open Water diving certification is required to dive Little Armstrong Bay. The shallow depths of 6 to 7 metres and mild currents make this Western Australian site appropriate for newly certified divers looking to gain experience. More advanced certifications are not necessary due to the beginner-friendly conditions.
There is no entry fee to dive Little Armstrong Bay in Western Australia. The site offers free shore access for certified divers, though no facilities are provided on site. Divers should bring all necessary equipment and supplies as the location is undeveloped.
A 5mm wetsuit is recommended for diving at Litte Armstrong Bay in Perth. Water temperatures range from 18°C to 23°C.
Litte Armstrong Bay in Perth has depths ranging from 6 metres to 7 metres.