Diving at Ammo Jetty (Australia)
Set in Woodman Point Recreation Reserve off Cockburn Road at Coogee, Ammo Jetty is a shallow shore dive reaching about 9 m / 30 ft. A T-shaped jetty on pylons shelters a community of macro life, from nudibranchs and boxfish to seahorses among the sponges. Night dives are possible here, and with easy beach access it suits divers building experience, with an advanced open-water level noted in the source.
Tonight's objective overview for Ammo Jetty shows an air temperature of 15.5°C. The measured surface conditions include wave heights around 1.7 m. This environmental data is logged for the close of the day.
Dive Site Location & Key Facts
Dive Site Overview
Pylons do the work at this jetty. The T-shaped structure stands on a forest of supports that gather sponges, small growth and the macro life the site is known for, set over a bottom of sand with coral noted around the pylons. Maximum depth reaches only about 9 m / 30 ft, with an average close to 8 m / 26 ft, so light stays good and bottom time runs long, which is part of why the jetty rewards a slow, close-up dive.
Access is from shore with a car park nearby, and the layout makes navigation simple: follow the pylon lines out and back. Macro is the headline, and a patient diver moving pylon to pylon will find more than a quick pass would suggest. Night diving is possible here, which opens up a different cast of active animals after dark.
Two practical realities shape any visit: this is a working recreational area with fishing from the jetty, so lines and hooks are a genuine consideration, and boat traffic moves in the area. Keeping close to the structure, staying aware overhead, and surfacing with care handle both. For divers who like patient, photography-friendly diving close to Perth, the pylon community is the appeal.
Conditions are Good
Optimal conditions expected
Current conditions near Ammo Jetty show 16° air, 17° sea temperature, 1.7 m waves, and 17 km/h wind. Forecast data is refreshed regularly to ensure accuracy.
Best Time to Dive
Perth's metro water sets the seasons here, and the jetty scores best over summer, with January through March carrying the year's strongest dive-condition numbers. Water is warmest in that window, near 24°C / 75°F, and cools to about 17°C / 62°F by mid-winter, so plan for a thicker wetsuit outside the warmer months. Swell is modest at this sheltered jetty, with modelled wave height in a low 1.3–2.1 m / 4–7 ft range and dropping further over summer, which helps visibility and comfort. Wind picks up through winter and lifts again toward summer's end, while rainfall is heaviest in the cooler months without being a major dive factor. The practical window is broad: warm, calm summer days are the clear pick, though the shallow depth and shelter keep the jetty diveable across much of the year when conditions are settled.
PEAK SEASON SCORE
Scores combine air & water temps, waves, wind & rainfall for overall conditions.
BEST MONTHS TO DIVE
Monthly records compiled from satellite and marine observation nodes over the last 3 years. Data provided by Open-Meteo and MET Norway.
Dive Experience & Conditions
Plan on an easy shore dive worked slowly around jetty pylons. With a maximum near 9 m / 30 ft and an average around 8 m / 26 ft, depth stays shallow, no-deco time is generous, and air lasts, all of which favour the close, observational style the macro life invites. The bottom is mostly sand with coral around the supports, so the structure itself holds the interest while the open sand between pylons stays quiet. Conditions are usually gentle at this sheltered spot, with swell low for much of the year, though wind can still stir the shallows. The realities to manage are human: fishing happens from the jetty, so lines and hooks sit in the dive area, and boats move nearby. Working close to the pylons, keeping an eye upward, and carrying a cutting tool make the dive straightforward. Night diving is on the table here too, which changes the animals on show and adds a reason to return after dark.
Dive Difficulty & Safety Guidelines
Fishing lines and boat traffic are the hazards the source names, and both stem from the jetty being a busy recreational spot. Monofilament and hooks around the pylons are the first concern, so a cutting tool, careful movement near the structure, and awareness of where lines hang are sensible precautions. Boats operate in the area, which makes a surface marker and a careful ascent worthwhile, particularly if you move out from under the jetty.
Depth is shallow at about 9 m / 30 ft, which keeps the profile forgiving, though the source notes an advanced open-water level, likely reflecting the entanglement and traffic considerations more than any demand of depth. For night dives, the usual extra care with lights, navigation and buddy contact applies. Handled with attention to lines and overhead traffic, the jetty stays an approachable dive.
Recommended Equipment
- Dive Computer
- Hard-soled Dive Boots
This gear list is based on verified equipment signals for Ammo Jetty, Australia. Always confirm final gear choices with your dive operator, guide, or liveaboard.
Recommended Dive Suit
Repeated dives during the same day can gradually reduce overall body warmth.
The water around Ammo Jetty is currently holding at approximately 17°C (63°F), setting the tone for today's dives. Surface air temperatures are resting at 16°C (60°F). Divers spending extended time underwater often rely on 5-7mm wetsuit for balanced warmth and flexibility. A hood or vest is suggested for sensitive divers due to surface winds. A thermal robe or jacket is recommended between dives.
The forecast outlook suggests that temperatures will stay close to current levels.
Emergency & Medical Support
Essential information to help you plan your dive trip to Ammo Jetty.
Hyperbaric chambers are a critical part of dive safety infrastructure. Availability varies significantly by region, and not all dive areas have immediate access.
Before diving, it's recommended to:
- confirm nearest medical facilities
- check emergency procedures with local dive operators
- ensure dive insurance covers evacuation if required
Divers Alert Network
Diving emergency assistance available through DAN World.
+1-919-684-9111- 24/7 emergency hotline
- Diving medical assistance
- Evacuation coordination
Emergency contacts are provided for reference. Always verify local emergency services before diving.
Marine Life at Ammo Jetty
Macro is the calling card. Confirmed sightings include boxfish, yellowtail, old wives and nudibranchs working the pylons and sponge growth, the kind of small, detailed life that rewards a slow pass and a good eye.
Source notes add, with less certainty, seahorses, blennies and a wider range of sponges and corals around the structure. Nothing is guaranteed on a single dive, but the density of small life on the pylons is the steady draw, and a patient diver moving support to support, especially on a night dive, tends to come away with the most.
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Search Flights on ExpediaFrequently Asked Questions
Can you night dive at Ammo Jetty?
Yes, night dives are possible here, which brings out a different range of active macro life around the pylons after dark.
How deep is it?
Maximum depth is about 9 m / 30 ft, with an average near 8 m / 26 ft, so the dive stays shallow and forgiving on air and no-deco time.
What is the main hazard?
Fishing from the jetty means lines and hooks in the dive area, and boats operate nearby, so carry a cutting tool, stay close to the structure, and surface with care.
What kind of marine life is here?
It is a macro site. Boxfish, yellowtail, old wives and nudibranchs are confirmed, with seahorses, blennies and sponges noted as further possibilities.
When are conditions best?
January through March score highest, with the warmest water near 24°C / 75°F and the calmest summer swell, though the sheltered jetty dives well across much of the year.
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Conditions are Good
Optimal conditions expected
Current conditions near Ammo Jetty show 16° air, 17° sea temperature, 1.7 m waves, and 17 km/h wind. Forecast data is refreshed regularly to ensure accuracy.