[{"data":1,"prerenderedAt":189},["ShallowReactive",2],{"leaderboard-total":3,"spot-green-head-offshore-islands-and-reefs":9,"spot-seo-green-head-offshore-islands-and-reefs":154},{"entries":4,"total":5,"period":6,"type":7,"generated_at":8},[],0,"all_time","reports","2026-10-03T06:32:05.526386Z",{"id":10,"name":11,"slug":12,"latitude":13,"longitude":14,"description":15,"difficulty":16,"image_url":17,"status":18,"tide_constituents":19,"hazard_entries":70,"access_info_structured":84,"area_boundary":17,"routes":17,"created_at":94,"updated_at":95,"today_conditions":96,"today_verdict_view":119,"images":149,"submitted_by":150,"region_name":152,"verification_status":153,"verified_at":17,"disputed":109,"verifier_count":5,"last_verified_display_name":17},"368f5223-1918-4d70-b7c0-37e2e2535a0f","Green Head Offshore Islands and Reefs","green-head-offshore-islands-and-reefs",-30.067544,114.967996,"Just offshore from Green Head, a necklace of limestone reefs and small islands rises from crystal-clear Indian Ocean waters, nourished by the warm Leeuwin Current. This area offers exceptional snorkeling over hard and soft corals, seagrass meadows, and sponge gardens. The sheltered bays — including the stunning circular Dynamite Bay — provide safe entry points, while the offshore reefs around Milligan Island and Point Louise are prime spots for exploring a diverse marine environment. Fisherman's Island to the south is an Australian Sea Lion breeding colony (viewing restricted), adding to the region's wild appeal.","intermediate",null,"published",{"name":20,"amplitude":36,"phase":52,"latitude":13,"model":68,"epoch":69},[21,22,23,24,25,26,27,28,29,30,31,32,33,34,35],"2N2","J1","K1","K2","M2","M4","MF","MM","N2","O1","P1","Q1","S1","S2","T2",[37,38,39,40,41,42,43,44,45,46,47,48,49,50,51],0.00008569812446470496,0.008612880268253695,0.17171839198148303,0.019115292928998332,0.05482626907551219,0.006207538843712802,0.00639554386787454,0.0026499251836677273,0.014250807345819176,0.12254887039967689,0.046397609165852435,0.027382525232797765,0.021284844048117115,0.04281132506247862,0.00379228449963781,[53,54,55,56,57,58,59,60,61,62,63,64,65,66,67],15.642353185979571,220.82428254929675,180.43379029754678,44.2883590166164,60.28081417867986,173.87111345535862,42.95761435201795,175.6698406802817,91.85453602853715,175.23287179568138,171.73615602278107,173.2425691929197,7.373987207507154,71.0522134884825,338.6646468841794,"EOT20","1992-01-01T00:00:00Z",[71,77,81],{"name":72,"description":73,"severity":74,"season_start":75,"season_end":76},"Strong reef break at Point Louise","Point Louise has a known reef break that can produce powerful waves, hazardous for inexperienced snorkelers.","warning",6,9,{"name":78,"description":79,"severity":80,"season_start":17,"season_end":17},"Restricted access at Fisherman's Island","Fisherman's Island is an Australian Sea Lion breeding colony — landing is prohibited without a registered guide.","caution",{"name":82,"description":83,"severity":80,"season_start":17,"season_end":17},"Afternoon sea breeze chop","Strong afternoon sea breezes can create choppy conditions, reducing visibility and making swimming more strenuous, particularly in summer.",{"directions":85,"parking":86,"facilities":87,"fees":92,"access_method":93},"Green Head is approximately 3 hours north of Perth via Indian Ocean Drive. From the town centre, Dynamite Bay and South Bay are a short walk or drive. Access to offshore islands and reefs requires a boat or kayak launched from the protected concrete boat ramp near the main jetty.","Parking is available at Dynamite Bay, the main jetty\u002Fboat ramp, and along the Three Bays Walkway access points. No fees for day parking.",[88,89,90,91],"parking","toilets","boat_ramp","picnic_tables","No fees for day-use snorkeling access. Camping at Milligan Island is $15 per car per night.","shore_entry","2026-07-27T02:58:57.060266Z","2026-08-04T05:30:44.786747Z",{"verdict":97,"evaluated_at":98,"models":99},"no_go","2026-10-03T02:22:36.018908Z",[100,107,113],{"model_name":101,"is_favourable":102,"value":103,"threshold":104,"unit":105,"operator":106},"Wind Speed",true,0.73,10,"kn","lte",{"model_name":108,"is_favourable":109,"value":110,"threshold":111,"unit":112,"operator":106},"Wave Height",false,1.947,0.5,"m",{"model_name":114,"is_favourable":109,"value":115,"threshold":116,"unit":117,"operator":118},"Visibility",1.8,2,"","gte",{"verdict":97,"rating":120,"evaluated_at":98,"generated_at":98,"source":121,"confidence":122,"visibility":125,"parameters":126,"models_passed":116,"models_total":144},"Hazardous","precomputed",{"level":123,"value":124},"High",100,{"score":115,"rating":17,"confidence":17},[127,130,136,140,146],{"name":108,"value":128,"label":17,"unit":112,"favourable":109,"score":5,"optimal_max":111,"marginal_max":129},1.94704126612192,1,{"name":131,"value":132,"label":17,"unit":133,"favourable":109,"score":129,"optimal_max":134,"marginal_max":135},"Swell Period",11.3,"s",8,12,{"name":101,"value":137,"label":17,"unit":105,"favourable":102,"score":138,"optimal_max":104,"marginal_max":139},0.7319319640112811,3,15,{"name":141,"value":142,"label":17,"unit":143,"favourable":102,"score":138,"optimal_max":144,"marginal_max":145},"Precipitation",0.7,"mm",5,20,{"name":147,"value":17,"label":148,"unit":117,"favourable":109,"score":129,"optimal_max":17,"marginal_max":17},"Tidal Phase","ebb",[],{"display_name":151},"Daniel","Western Australia","unverified",{"title":155,"description":156,"canonical_url":157,"og_image":158,"structured_data":159,"breadcrumbs":182},"Snorkeling Conditions at Green Head Offshore Islands and Reefs - How's the Spot","Check snorkeling conditions at Green Head Offshore Islands and Reefs, Western Australia. Hazardous conditions, water 19.7°C, waves 1.95m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Fgreen-head-offshore-islands-and-reefs","https:\u002F\u002Fhowsthespot.com\u002Fog-default.png",[160,169],{"@context":161,"@type":162,"name":11,"description":163,"url":157,"geo":164,"address":166},"https:\u002F\u002Fschema.org","Place","Just offshore from Green Head, a necklace of limestone reefs and small islands rises from crystal-clear Indian Ocean waters, nourished by the warm Leeuwin Current. This area offers exceptional snor...",{"@type":165,"latitude":13,"longitude":14},"GeoCoordinates",{"@type":167,"addressRegion":152,"addressCountry":168},"PostalAddress","Australia",{"@context":161,"@type":170,"name":171,"description":156,"url":157,"breadcrumb":172},"WebPage","Snorkeling Conditions at Green Head Offshore Islands and Reefs",{"@context":161,"@type":173,"itemListElement":174},"BreadcrumbList",[175,179,181],{"@type":176,"position":129,"name":177,"item":178},"ListItem","Home","https:\u002F\u002Fhowsthespot.com",{"@type":176,"position":116,"name":152,"item":180},"https:\u002F\u002Fhowsthespot.com\u002Fexplore?region=western-australia",{"@type":176,"position":138,"name":11,"item":157},[183,185,187],{"label":177,"href":184},"\u002F",{"label":152,"href":186},"\u002Fexplore?region=western-australia",{"label":11,"href":188},"\u002Fspots\u002Fgreen-head-offshore-islands-and-reefs",1791009157103]