[{"data":1,"prerenderedAt":215},["ShallowReactive",2],{"leaderboard-total":3,"spot-seo-kwinana-grain-terminal":9,"spot-kwinana-grain-terminal":51},{"entries":4,"total":5,"period":6,"type":7,"generated_at":8},[],0,"all_time","reports","2026-10-03T06:32:05.526386Z",{"title":10,"description":11,"canonical_url":12,"og_image":13,"structured_data":14,"breadcrumbs":44},"Snorkeling Conditions at Kwinana Grain Terminal - How's the Spot","Check snorkeling conditions at Kwinana Grain Terminal, Western Australia. Good conditions, water 18.7°C, waves 0.36m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Fkwinana-grain-terminal","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_kwinana-grain-terminal_0_1403efa6eabc.jpg",[15,28],{"@context":16,"@type":17,"name":18,"description":19,"url":12,"geo":20,"address":24},"https:\u002F\u002Fschema.org","Place","Kwinana Grain Terminal","Beneath the towering 800-metre grain jetty in Kwinana, a submerged metropolis of soft corals, sponges, and seafans clings to every pylon, creating an artificial reef teeming with life. The dark, gh...",{"@type":21,"latitude":22,"longitude":23},"GeoCoordinates",-32.235,115.754,{"@type":25,"addressRegion":26,"addressCountry":27},"PostalAddress","Western Australia","Australia",{"@context":16,"@type":29,"name":30,"description":11,"url":12,"breadcrumb":31},"WebPage","Snorkeling Conditions at Kwinana Grain Terminal",{"@context":16,"@type":32,"itemListElement":33},"BreadcrumbList",[34,39,42],{"@type":35,"position":36,"name":37,"item":38},"ListItem",1,"Home","https:\u002F\u002Fhowsthespot.com",{"@type":35,"position":40,"name":26,"item":41},2,"https:\u002F\u002Fhowsthespot.com\u002Fexplore?region=western-australia",{"@type":35,"position":43,"name":18,"item":12},3,[45,47,49],{"label":37,"href":46},"\u002F",{"label":26,"href":48},"\u002Fexplore?region=western-australia",{"label":18,"href":50},"\u002Fspots\u002Fkwinana-grain-terminal",{"id":52,"name":18,"slug":53,"latitude":22,"longitude":23,"description":54,"difficulty":55,"image_url":13,"status":56,"tide_constituents":57,"hazard_entries":108,"access_info_structured":139,"area_boundary":113,"routes":113,"created_at":147,"updated_at":148,"today_conditions":149,"today_verdict_view":169,"images":198,"submitted_by":212,"region_name":26,"verification_status":214,"verified_at":113,"disputed":183,"verifier_count":5,"last_verified_display_name":113},"0bc4d07e-9fdb-455c-b45a-655e64024cde","kwinana-grain-terminal","Beneath the towering 800-metre grain jetty in Kwinana, a submerged metropolis of soft corals, sponges, and seafans clings to every pylon, creating an artificial reef teeming with life. The dark, ghostlike pylons attract Port Jackson sharks, boxfish, leatherjackets, and massive schools of baitfish. Crystal-clear visibility is common on calm days, and the dappled light filtering through the jetty structure makes for dramatic underwater scenery. A true Perth shore-dive favourite that feels a world away from the industrial port above the surface.","intermediate","published",{"name":58,"amplitude":74,"phase":90,"latitude":22,"model":106,"epoch":107},[59,60,61,62,63,64,65,66,67,68,69,70,71,72,73],"2N2","J1","K1","K2","M2","M4","MF","MM","N2","O1","P1","Q1","S1","S2","T2",[75,76,77,78,79,80,81,82,83,84,85,86,87,88,89],0.004069325823909827,0.009580000548645941,0.16611524296546198,0.014440773295855464,0.054810839874245496,0.004814749443883301,0.004811842523596494,0.004765109170341946,0.013737111875289554,0.12162132956348988,0.05054214454923644,0.02301955323559473,0.015695631430451714,0.04187806720123667,0.002783104438818689,[91,92,93,94,95,96,97,98,99,100,101,102,103,104,105],42.10913576643702,226.59353320467483,181.78257235747367,35.716919813675986,58.15611909694036,137.3296854619773,31.286949502097734,226.83045619214965,106.35504050734063,176.18030674893157,170.98156153344047,173.28370864095223,311.95285072805956,62.99541932275986,232.04190429418964,"EOT20","1992-01-01T00:00:00Z",[109,114,117,120,124,127,130,133,136],{"name":110,"description":111,"severity":112,"season_start":113,"season_end":113},"Fishing activity","The jetty is an active industrial grain terminal used by fishing vessels; watch for fishing lines, hooks, and boat traffic around the jetty.","caution",null,{"name":115,"description":116,"severity":112,"season_start":113,"season_end":113},"Reduced visibility","Milky or stirred-up sediment can significantly reduce underwater visibility, especially when sea breezes pick up in the afternoon.",{"name":118,"description":119,"severity":112,"season_start":113,"season_end":113},"Barnacle-encrusted pylons","The jetty's wooden and concrete pylons are covered in sharp barnacles and marine growth that can cause cuts and abrasions.",{"name":121,"description":122,"severity":123,"season_start":113,"season_end":113},"Boat traffic","The grain terminal is an active commercial facility with ship movements; snorkellers must stay clear of vessel channels.","warning",{"name":125,"description":126,"severity":123,"season_start":113,"season_end":113},"Parallel shore current","A strong current can run parallel to the shore, making navigation tricky when combined with the magnetic interference from the jetty structure.",{"name":128,"description":129,"severity":112,"season_start":113,"season_end":113},"Compass interference from jetty","The long jetty interferes with compass readings, requiring careful navigation.",{"name":131,"description":132,"severity":112,"season_start":113,"season_end":113},"Variable visibility","Visibility can be reduced, especially after weather events; reported as low as 4 m.",{"name":134,"description":135,"severity":112,"season_start":113,"season_end":113},"Long surface swim","A long surface swim (~200 m) from shore to the jetty is required, which can be tiring in current or swell.",{"name":137,"description":138,"severity":123,"season_start":113,"season_end":113},"Tidal currents","Strong tidal flows can develop around the jetty pylons, especially during spring tides, making it difficult to maintain position.",{"directions":140,"parking":141,"facilities":142,"fees":145,"access_method":146},"Located about 45 minutes south of Perth CBD. Take Rockingham Road in Kwinana; the entrance to the carpark is slightly hidden by tall grass and reeds. Park and follow the sandy path down to the beach, then walk out along the jetty pylons to enter.","Good-sized carpark at the end of the access road; entrance can be easy to miss among the tall grass and reeds.",[143,144],"parking","toilets","Free","shore_entry","2026-07-27T02:58:36.484958Z","2026-08-04T05:30:44.786427Z",{"verdict":150,"evaluated_at":151,"models":152},"go","2026-10-03T02:15:35.874727Z",[153,160,164],{"model_name":154,"is_favourable":155,"value":156,"threshold":157,"unit":158,"operator":159},"Wind Speed",true,0.5,10,"kn","lte",{"model_name":161,"is_favourable":155,"value":162,"threshold":156,"unit":163,"operator":159},"Wave Height",0.357,"m",{"model_name":165,"is_favourable":155,"value":166,"threshold":40,"unit":167,"operator":168},"Visibility",2.7,"","gte",{"verdict":150,"rating":170,"evaluated_at":151,"generated_at":151,"source":171,"confidence":172,"visibility":175,"parameters":176,"models_passed":43,"models_total":193},"Good","precomputed",{"level":173,"value":174},"High",100,{"score":166,"rating":113,"confidence":113},[177,179,186,189,195],{"name":161,"value":178,"label":113,"unit":163,"favourable":155,"score":43,"optimal_max":156,"marginal_max":36},0.3567839231802474,{"name":180,"value":181,"label":113,"unit":182,"favourable":183,"score":36,"optimal_max":184,"marginal_max":185},"Swell Period",11.3,"s",false,8,12,{"name":154,"value":187,"label":113,"unit":158,"favourable":155,"score":43,"optimal_max":157,"marginal_max":188},0.5015107200000001,15,{"name":190,"value":191,"label":113,"unit":192,"favourable":155,"score":43,"optimal_max":193,"marginal_max":194},"Precipitation",0.4,"mm",5,20,{"name":196,"value":113,"label":197,"unit":167,"favourable":183,"score":36,"optimal_max":113,"marginal_max":113},"Tidal Phase","ebb",[199,206,209],{"id":200,"image_url":13,"sort_order":5,"is_primary":155,"moderation_status":201,"license":202,"license_url":203,"attribution":204,"author_name":205},"27db79e7-3f25-4fd3-b5e5-0f629ed0205e","approved","CC BY-SA 4.0","https:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F","Photo by Calistemon","Calistemon",{"id":207,"image_url":208,"sort_order":36,"is_primary":183,"moderation_status":201,"license":202,"license_url":203,"attribution":204,"author_name":205},"39d4b9f9-768f-4913-9f5d-e376e84aa65d","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_kwinana-grain-terminal_1_6bd992537ffa.jpg",{"id":210,"image_url":211,"sort_order":40,"is_primary":183,"moderation_status":201,"license":202,"license_url":203,"attribution":204,"author_name":205},"f79ae01c-427f-4fee-93cd-4dd8832f7a39","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_kwinana-grain-terminal_2_a020d9338b42.jpg",{"display_name":213},"Daniel","unverified",1791009165647]