Minden Reefs is a popular offshore reef system located off the coast between Perth and Mandurah, Western Australia. This limestone and sandstone reef structure rises from sandy seafloor and supports rich marine biodiversity, making it a go-to spot for both divers and snorkelers. The reef features ledges, gutters, and bommies that shelter colourful tropical and temperate fish species. Known for its clear waters on calm days, the site offers encounters with octopus, cuttlefish, rays, nudibranchs, and healthy coral growth. Access is by boat only from nearby launch ramps.
Minden Reefs
IntermediateSKIP
SKIP
Poor conditions. Stay out today.
Showing last known conditions
Wave Height 1.7 mSwell Period 11 sWind Speed 3.8 knPrecipitation 0.4 mmTidal Phase ebb
Last evaluated
© Zoe Richards et alThe spot
Community-maintained
Community contribution: submitted by Daniel
Know before you go
Logged by the community, confirmed by mods
Moderate risk: Strong currents
The offshore location can experience tidal currents and wind-driven swells that affect visibility and swimming conditions, particularly on days with larger swell.
Low risk: Boat traffic
Minden Reefs is only accessible by boat and lies in an area frequented by recreational and fishing vessels. Snorkelers need to be vigilant and surface with care.
Low risk: Limited visibility
After storms or in windy conditions, sediment can reduce visibility significantly at this offshore reef system.
Wildlife Guide
No wildlife notes for this spot yet.
Gallery
3 photos from the community
Getting in
Boat
Entry
Minden Reefs is located roughly 10–12 km offshore from the coast between Fremantle and Mandurah. Best launched from Woodman Point, Port Coogee, or Mandurah boat ramps. GPS coordinates approx -32.0708, 115.725.
Parking & facilities
Available at Woodman Point boat ramp and Mandurah ramp areas. Arrive early on weekends to secure a spot.
parkingboat_ramp
Varies by launch ramp; some require a launch fee or boat registration.
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Gallery ┬╖ 3 photos
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About this data
- Conditions last evaluated
- Spot data last updated
- Data sources
- Open-Meteo (marine & weather conditions), tide predictions via UTide, community contributors (descriptions, hazards, marine life).
- License
- Spot content licensed under CC BY-SA 4.0. How's the Spot is open source.
Weather & swell ┬╖ Open-Meteo marine & weather APIs Tides ┬╖ UTide harmonic analysis Sea & safety ┬╖ community reports