[{"data":1,"prerenderedAt":190},["ShallowReactive",2],{"leaderboard-total":3,"spot-seo-four-mile-reef":9,"spot-four-mile-reef":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 Four Mile Reef - How's the Spot","Check snorkeling conditions at Four Mile Reef, Western Australia. Good conditions, water 18.0°C, waves 0.26m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Ffour-mile-reef","https:\u002F\u002Fhowsthespot.com\u002Fog-default.png",[15,28],{"@context":16,"@type":17,"name":18,"description":19,"url":12,"geo":20,"address":24},"https:\u002F\u002Fschema.org","Place","Four Mile Reef","Four Mile Reef is an iconic offshore dive and snorkel site sitting roughly 4 nautical miles off the Busselton coast in Geographe Bay, within the Ngari Capes Marine Park (Southwest Capes, WA). The r...",{"@type":21,"latitude":22,"longitude":23},"GeoCoordinates",-33.55,115.05,{"@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 Four Mile Reef",{"@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\u002Ffour-mile-reef",{"id":52,"name":18,"slug":53,"latitude":22,"longitude":23,"description":54,"difficulty":55,"image_url":56,"status":57,"tide_constituents":58,"hazard_entries":109,"access_info_structured":126,"area_boundary":56,"routes":56,"created_at":135,"updated_at":136,"today_conditions":137,"today_verdict_view":158,"images":186,"submitted_by":187,"region_name":26,"verification_status":189,"verified_at":56,"disputed":171,"verifier_count":5,"last_verified_display_name":56},"8b511c0b-7e14-4730-b6d5-9bb087f52d1f","four-mile-reef","Four Mile Reef is an iconic offshore dive and snorkel site sitting roughly 4 nautical miles off the Busselton coast in Geographe Bay, within the Ngari Capes Marine Park (Southwest Capes, WA). The reef features a dramatic 1-metre shelf drop to 17–18 metres, beneath which lies an underwater oasis of sponge gardens, ledges, and rocky overhangs. Accessible only by boat, this offshore limestone reef offers clear bay waters and a thriving ecosystem that attracts both serious snorkelers and divers. Its exposed position means conditions can change quickly, rewarding calm-weather visits with exceptional visibility.","intermediate",null,"published",{"name":59,"amplitude":75,"phase":91,"latitude":22,"model":107,"epoch":108},[60,61,62,63,64,65,66,67,68,69,70,71,72,73,74],"2N2","J1","K1","K2","M2","M4","MF","MM","N2","O1","P1","Q1","S1","S2","T2",[76,77,78,79,80,81,82,83,84,85,86,87,88,89,90],0.008418987445392942,0.00851647643300018,0.18041946087455582,0.0173001348284642,0.04589327088109548,0.0014773310685913964,0.004111816905340056,0.0028768381282706355,0.016523459047457098,0.13195539424511937,0.05478854315278736,0.0331597036931103,0.007767477932185958,0.045719746179159144,0.0025231927920518326,[92,93,94,95,96,97,98,99,100,101,102,103,104,105,106],86.34021184630883,220.25072251063716,183.60090700494925,35.691328049762916,64.20024771592688,210.75403857886107,39.89046821902201,241.47057983543272,121.65211522897641,174.43587303145182,178.01849677973996,169.11411660997163,357.33680354815954,56.60819729279572,240.07927733496376,"EOT20","1992-01-01T00:00:00Z",[110,114,119,123],{"name":111,"description":112,"severity":113,"season_start":56,"season_end":56},"Boat traffic","Offshore reef accessed only by boat; vessels transit the area and snorkelers must be visible on the surface.","warning",{"name":115,"description":116,"severity":113,"season_start":117,"season_end":118},"Strong currents","Geographe Bay can experience tidal flows and wind-driven currents that affect the exposed reef area.",6,9,{"name":120,"description":121,"severity":122,"season_start":56,"season_end":56},"Depth hazard","Reef drops from 1 m shelf to 17–18 m; less experienced snorkelers should stay within the shallower shelf zone.","caution",{"name":124,"description":125,"severity":122,"season_start":56,"season_end":56},"Changing weather","Offshore position means conditions can deteriorate rapidly with wind shifts, creating chop and reduced visibility.",{"directions":127,"parking":128,"facilities":129,"fees":133,"access_method":134},"Four Mile Reef lies approximately 4 nautical miles offshore from Busselton, Western Australia. Launch from Busselton Jetty boat ramp or Busselton Boat Harbour. The reef is located in Geographe Bay within the Ngari Capes Marine Park. GPS coordinates approximate: 33°33'S, 115°03'E.","Parking available at Busselton Jetty precinct and Busselton Boat Harbour ramps. Arrive early on summer weekends as lots fill quickly.",[130,131,132],"parking","toilets","boat_ramp","No direct entry fee for the reef, but boat launch fees may apply at Busselton Boat Harbour. Marine park entry is free.","boat","2026-07-27T02:59:08.265650Z","2026-08-04T05:34:24.990753Z",{"verdict":138,"evaluated_at":139,"models":140},"go","2026-10-03T02:22:37.869642Z",[141,148,153],{"model_name":142,"is_favourable":143,"value":144,"threshold":145,"unit":146,"operator":147},"Wind Speed",true,0.67,10,"kn","lte",{"model_name":149,"is_favourable":143,"value":150,"threshold":151,"unit":152,"operator":147},"Wave Height",0.256,0.5,"m",{"model_name":154,"is_favourable":143,"value":155,"threshold":40,"unit":156,"operator":157},"Visibility",2.7,"","gte",{"verdict":138,"rating":159,"evaluated_at":139,"generated_at":139,"source":160,"confidence":161,"visibility":164,"parameters":165,"models_passed":43,"models_total":181},"Good","precomputed",{"level":162,"value":163},"High",100,{"score":155,"rating":56,"confidence":56},[166,167,174,177,183],{"name":149,"value":150,"label":56,"unit":152,"favourable":143,"score":43,"optimal_max":151,"marginal_max":36},{"name":168,"value":169,"label":56,"unit":170,"favourable":171,"score":36,"optimal_max":172,"marginal_max":173},"Swell Period",11,"s",false,8,12,{"name":142,"value":175,"label":56,"unit":146,"favourable":143,"score":43,"optimal_max":145,"marginal_max":176},0.6706248000000001,15,{"name":178,"value":179,"label":56,"unit":180,"favourable":143,"score":43,"optimal_max":181,"marginal_max":182},"Precipitation",1.2,"mm",5,20,{"name":184,"value":56,"label":185,"unit":156,"favourable":171,"score":36,"optimal_max":56,"marginal_max":56},"Tidal Phase","ebb",[],{"display_name":188},"Daniel","unverified",1791009153767]