

Semaphore Jetty offers a calm, shallow dive in 0 to 4 metres of water, making it a comfortable choice for beginners getting comfortable in South Australian waters. Visibility runs 5 to 10 metres, giving you a clear look at the seagrass beds that spread out beneath the jetty structure. Sponges and baitfish gather in the shadows of the pylons, and if you move slowly and look carefully among the seagrass, you may spot a blue swimmer crab or the tiny, easy-to-miss Spadenose Clingfish clinging to surfaces nearby. Currents are mild, but be mindful of the overhead environment under the jetty and watch for potential entanglement hazards around old ropes or debris. Sharks are present in the area, as they are throughout South Australian coastal waters.
-34.83725, 138.47450
Entering at or near high tide gives you the most water depth and the clearest conditions under the jetty. Check locally for any current facility availability before you head out.
The site is accessed by entering the water from the Semaphore Jetty.
The PIRSA shark sighting log shows multiple reports of sharks, including White Sharks and Bronze Whalers, in the vicinity of Semaphore Jetty.
Depth
1-4m
Visibility
5-25m
Skill Level
Beginner
Entry
Shore
Water Temp
13-23°C
Current
Mild
Typical Dive
30 min
Best Time
Year-round
Semaphore Jetty in Adelaide Metro is a shore dive. The site is accessed by entering the water from the Semaphore Jetty.
Yes, parking is available near Semaphore Jetty. Arrive early during peak seasons as spaces can fill up quickly.
Semaphore Jetty in Adelaide Metro is well-suited for beginner divers and snorkellers. Conditions are typically calm with easy entry and shallow depths.
Diving at Semaphore Jetty in Adelaide Metro requires the following certifications: Open Water. Always dive within your training limits.
A 7mm wetsuit or semi-dry is recommended for diving at Semaphore Jetty in Adelaide Metro. Water temperatures range from 13°C to 23°C.
Semaphore Jetty in Adelaide Metro is home to baitfish, sponges, blue swimmer crab, and Spadenose Clingfish. Marine life sightings vary by season and conditions.
The best months to visit Semaphore Jetty in Adelaide Metro are January, February, March, April, May, June, July, August, September, October, November, and December. Conditions outside these months can still be good but are less predictable.
Semaphore Jetty in Adelaide Metro has depths ranging from 1 metres to 4 metres.
Semaphore Jetty in Adelaide Metro offers snorkelling with a rating of 1 out of 5. Shallow areas start from 1 metres, making it accessible for snorkellers.
A typical dive at Semaphore Jetty in Adelaide Metro lasts approximately 30 minutes. Actual dive time depends on depth, air consumption, and conditions.
Semaphore Jetty in Adelaide Metro typically has mild currents that most divers can handle comfortably.
Visibility at Semaphore Jetty in Adelaide Metro typically ranges from 5 metres to 25 metres. Conditions vary with weather, tides, and seasons.