[{"data":1,"prerenderedAt":279},["ShallowReactive",2],{"leaderboard-total":3,"spot-seo-coffin-bay-town-beaches-jetty":9,"spot-coffin-bay-town-beaches-jetty":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 Coffin Bay (Town Beaches \u002F Jetty) - How's the Spot","Check snorkeling conditions at Coffin Bay (Town Beaches \u002F Jetty), South Australia. Hazardous conditions, water 16.6°C, waves 1.29m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Fcoffin-bay-town-beaches-jetty","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_coffin-bay-town-beaches-jetty_0_329058ff9515.jpg",[15,28],{"@context":16,"@type":17,"name":18,"description":19,"url":12,"geo":20,"address":24},"https:\u002F\u002Fschema.org","Place","Coffin Bay (Town Beaches \u002F Jetty)","Coffin Bay's sheltered town beaches and historic jetty offer easy-access snorkeling inside the pristine waters of Thorny Passage Marine Park on the Eyre Peninsula. The shallow, sandy-bottomed bays...",{"@type":21,"latitude":22,"longitude":23},"GeoCoordinates",-34.622647,135.465612,{"@type":25,"addressRegion":26,"addressCountry":27},"PostalAddress","South Australia","Australia",{"@context":16,"@type":29,"name":30,"description":11,"url":12,"breadcrumb":31},"WebPage","Snorkeling Conditions at Coffin Bay (Town Beaches \u002F Jetty)",{"@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=south-australia",{"@type":35,"position":43,"name":18,"item":12},3,[45,47,49],{"label":37,"href":46},"\u002F",{"label":26,"href":48},"\u002Fexplore?region=south-australia",{"label":18,"href":50},"\u002Fspots\u002Fcoffin-bay-town-beaches-jetty",{"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":188,"area_boundary":120,"routes":120,"created_at":198,"updated_at":199,"today_conditions":200,"today_verdict_view":222,"images":248,"submitted_by":276,"region_name":26,"verification_status":278,"verified_at":120,"disputed":213,"verifier_count":5,"last_verified_display_name":120},"590b5b02-2c2e-4b88-bcbf-62eb0e7c736e","coffin-bay-town-beaches-jetty","Coffin Bay's sheltered town beaches and historic jetty offer easy-access snorkeling inside the pristine waters of Thorny Passage Marine Park on the Eyre Peninsula. The shallow, sandy-bottomed bays near the foreshore are calm and protected, with clear turquoise water perfect for beginners. The jetty itself acts as a fish-aggregating structure, drawing schools of reef fish beneath its pylons. Just a short drive west, the Coffin Bay National Park lagoon offers a more adventurous snorkel with blue gropers and other reef fish, protected from the Southern Ocean by a natural reef ledge. The town's tranquil setting, bordered by national park and oyster farms, makes it a relaxed base for underwater exploration.","beginner","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],0.011918187997712817,0.012224473706049416,0.18382753435024107,0.061895185177804,0.19410992797790394,0.006350800236271659,0.008441617011053166,0.007587646781911984,0.018713671825903184,0.13312211421775877,0.056634753845862466,0.03312278137432535,0.011226081391448381,0.22908949623717298,0.01664750657233499,[91,92,93,94,95,96,97,98,99,100,101,102,103,104,105],146.19281477366934,276.2151456715909,245.16720955652522,120.1208899595572,82.46045268414014,108.33055588463532,138.52321122485603,251.6310949337706,145.06804007448187,229.1542334897315,245.39717087849664,214.9213316752976,347.607081402766,121.58952478716219,119.9016157522421,"EOT20","1992-01-01T00:00:00Z",[109,114,117,121,124,127,131,134,137,140,143,146,152,155,158,161,164,167,170,173,176,179,182,185],{"name":110,"description":111,"severity":112,"season_start":36,"season_end":113},"Boat traffic near jetty","The jetty is a working structure used by fishing boats and oyster farm vessels. Snorkelers should stay clear of boat lanes and watch for approaching vessels.","caution",12,{"name":115,"description":116,"severity":112,"season_start":36,"season_end":113},"Outgoing tide current","As the bay drains through the channel, an outgoing tide can create a noticeable pull away from the jetty. Less experienced snorkelers should enter on a slack or incoming tide.",{"name":118,"description":119,"severity":112,"season_start":120,"season_end":120},"Stinging jellyfish","Bluebottles (Portuguese man o' war) and other jellyfish can drift into the bay during warmer months, particularly summer.",null,{"name":122,"description":123,"severity":112,"season_start":36,"season_end":113},"Sharp oyster shells","Oyster farming occurs in the area; broken shells on the sandy bottom near the jetty's pylons can cause cuts. Reef shoes recommended.",{"name":125,"description":126,"severity":112,"season_start":36,"season_end":113},"Boat traffic","The town foreshore borders a working harbour with fishing boats and oyster farm vessels; stay within designated swimming areas.",{"name":128,"description":129,"severity":112,"season_start":130,"season_end":113},"Stinger jellyfish","Warm summer months can bring occasional jellyfish into the bay system.",11,{"name":132,"description":133,"severity":112,"season_start":120,"season_end":120},"Jetty traffic (fishing lines & hooks)","Fishing lines, hooks, and lures from anglers on the jetty can pose a snagging risk. Snorkel at a distance from active fishing areas.",{"name":135,"description":136,"severity":112,"season_start":120,"season_end":120},"Shark presence","Great white and bronze whaler sharks have been sighted in the area, particularly near Golden Island where they hunt salmon schools. Exercise caution in deeper water.",{"name":138,"description":139,"severity":112,"season_start":120,"season_end":120},"Strong surf at outer beaches","Beaches exposed to the Southern Ocean can develop strong surf and rips; the protected town beaches and jetty area are much safer.",{"name":141,"description":142,"severity":112,"season_start":120,"season_end":120},"Lagoon access seasonal","The lagoon snorkel site within Coffin Bay National Park is not accessible in winter due to swell and conditions.",{"name":144,"description":145,"severity":112,"season_start":120,"season_end":120},"Tidal movement around jetty","Tidal currents can push swimmers near jetty pylons; be mindful of changing tides.",{"name":147,"description":148,"severity":149,"season_start":150,"season_end":151},"Not accessible in winter","The lagoon is protected by a reef ledge but is not accessible during winter months due to rough conditions.","warning",6,8,{"name":153,"description":154,"severity":112,"season_start":120,"season_end":120},"Low tide access required","The lagoon is best accessed and visible at low tide when the reef ledge is exposed and water is calmer.",{"name":156,"description":157,"severity":112,"season_start":120,"season_end":120},"Rocky reef ledge","The reef ledge that protects the lagoon from the Southern Ocean can be sharp and slippery underfoot.",{"name":159,"description":160,"severity":149,"season_start":150,"season_end":151},"Winter swell closure","The lagoon is protected by a reef ledge and is not accessible during winter months (Jun-Aug) due to dangerous ocean swells.",{"name":162,"description":163,"severity":112,"season_start":120,"season_end":120},"Large shark presence (offshore)","Great white and bronze whaler sharks have been sighted working with dolphins to round up salmon schools offshore near Golden Island.",{"name":165,"description":166,"severity":149,"season_start":120,"season_end":120},"Bushfire risk \u002F park closure","The park is closed on days of Catastrophic Fire Danger and may close on Extreme Fire Danger days, particularly during summer.",{"name":168,"description":169,"severity":112,"season_start":120,"season_end":120},"Remote location - limited communications","Limited mobile reception in remote areas of the park.",{"name":171,"description":172,"severity":112,"season_start":120,"season_end":120},"Boat traffic in the bay","Coffin Bay is a working oyster-farming and boating area; stay alert for vessels, especially near the channel.",{"name":174,"description":175,"severity":112,"season_start":120,"season_end":120},"Strong afternoon sea breezes","Afternoon winds can pick up significantly in summer, creating choppy conditions and making shore exits more challenging.",{"name":177,"description":178,"severity":112,"season_start":120,"season_end":120},"Marine stingers (bluebottles)","Bluebottles and occasional jellyfish can drift into the sheltered bay during warmer months.",{"name":180,"description":181,"severity":149,"season_start":36,"season_end":113},"Boat traffic in channel","Recreational and oyster-farming boat traffic uses the main channel; snorkelers must stay clear of boat lanes and keep near the jetty structure.",{"name":183,"description":184,"severity":112,"season_start":36,"season_end":113},"Boat traffic near oyster leases","Local fishing boats and oyster farm vessels operate in the bay. Stay aware of boat channels and avoid swimming near lease markers.",{"name":186,"description":187,"severity":112,"season_start":36,"season_end":113},"Shifting sandbanks and tidal channels","Tidal movement can shift shallow sandbars and create deeper channels. Be mindful of changing water depths on outgoing tides.",{"directions":189,"parking":190,"facilities":191,"fees":196,"access_method":197},"Coffin Bay is 50 km west of Port Lincoln on the lower Eyre Peninsula, via Flinders Highway and Coffin Bay Road. The town beaches and jetty are accessed from the Esplanade in the town centre.","Free parking is available along the Esplanade and near the Coffin Bay boat ramp. A sealed carpark is located at the foreshore area.",[192,193,194,195],"toilets","parking","picnic_tables","boat_ramp","No fee for town beach\u002Fjetty access. Coffin Bay National Park entry fee of $14.40 per vehicle applies if visiting the park lagoon.","shore_entry","2026-07-27T02:56:54.628732Z","2026-08-04T05:32:31.002532Z",{"verdict":201,"evaluated_at":202,"models":203},"no_go","2026-10-03T02:17:06.894822Z",[204,211,217],{"model_name":205,"is_favourable":206,"value":207,"threshold":208,"unit":209,"operator":210},"Wind Speed",true,0.9,10,"kn","lte",{"model_name":212,"is_favourable":213,"value":214,"threshold":215,"unit":216,"operator":210},"Wave Height",false,1.286,0.5,"m",{"model_name":218,"is_favourable":213,"value":219,"threshold":40,"unit":220,"operator":221},"Visibility",1.41,"","gte",{"verdict":201,"rating":223,"evaluated_at":202,"generated_at":202,"source":224,"confidence":225,"visibility":228,"parameters":229,"models_passed":43,"models_total":243},"Hazardous","precomputed",{"level":226,"value":227},"High",100,{"score":219,"rating":120,"confidence":120},[230,232,236,239,245],{"name":212,"value":231,"label":120,"unit":216,"favourable":213,"score":5,"optimal_max":215,"marginal_max":36},1.2858703473205382,{"name":233,"value":234,"label":120,"unit":235,"favourable":213,"score":36,"optimal_max":151,"marginal_max":113},"Swell Period",10.55,"s",{"name":205,"value":237,"label":120,"unit":209,"favourable":206,"score":43,"optimal_max":208,"marginal_max":238},0.8961102400000002,15,{"name":240,"value":241,"label":120,"unit":242,"favourable":206,"score":43,"optimal_max":243,"marginal_max":244},"Precipitation",4.8,"mm",5,20,{"name":246,"value":120,"label":247,"unit":220,"favourable":206,"score":43,"optimal_max":120,"marginal_max":120},"Tidal Phase","slack",[249,256,263,270],{"id":250,"image_url":13,"sort_order":5,"is_primary":206,"moderation_status":251,"license":252,"license_url":253,"attribution":254,"author_name":255},"5470cfe9-6184-41c3-8223-0f035f4b2a22","approved","CC BY-SA 2.0","https:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F2.0\u002F","Photo by Michael Coghlan from Adelaide, Australia","Michael Coghlan",{"id":257,"image_url":258,"sort_order":36,"is_primary":213,"moderation_status":251,"license":259,"license_url":260,"attribution":261,"author_name":262},"57226047-872f-4e81-9af3-534bf1033754","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_coffin-bay-town-beaches-jetty_1_fda47ff63c5c.jpg","CC BY 2.0","https:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby\u002F2.0\u002F","Photo by Jacqui Barker","Jacqui Barker",{"id":264,"image_url":265,"sort_order":40,"is_primary":213,"moderation_status":251,"license":266,"license_url":267,"attribution":268,"author_name":269},"867b1eec-9ddb-4542-9668-7f8ab0ea146c","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_coffin-bay-town-beaches-jetty_2_86be05d1c903.jpg","CC BY 3.0","https:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby\u002F3.0\u002F","Jts-sa at English Wikipedia","Jack Stradling",{"id":271,"image_url":272,"sort_order":273,"is_primary":213,"moderation_status":251,"license":274,"license_url":275,"attribution":120,"author_name":120},"dc861839-48f1-43f2-b8a7-da2790faa454","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_coffin-bay-town-beaches-jetty_4_b57fa7f0feb7.jpg",4,"CC BY-SA 4.0","https:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F",{"display_name":277},"Daniel","unverified",1791009143237]