[{"data":1,"prerenderedAt":198},["ShallowReactive",2],{"leaderboard-total":3,"spot-seo-nepean-island":9,"spot-nepean-island":45},{"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":40},"Snorkeling Conditions at Nepean Island - How's the Spot","Check snorkeling conditions at Nepean Island. Good conditions, water 19.0°C, waves 0.80m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Fnepean-island","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_nepean-island_0_54bea39a50b5.jpg",[15,27],{"@context":16,"@type":17,"name":18,"description":19,"url":12,"geo":20,"address":24},"https:\u002F\u002Fschema.org","Place","Nepean Island","Nepean Island is a small uninhabited limestone islet rising 800 m south of Norfolk Island's Kingston coast. Unlike its volcanic neighbours, this Late Pleistocene calcarenite outcrop is ringed by ta...",{"@type":21,"latitude":22,"longitude":23},"GeoCoordinates",-29.0625,167.964,{"@type":25,"addressCountry":26},"PostalAddress","AU",{"@context":16,"@type":28,"name":29,"description":11,"url":12,"breadcrumb":30},"WebPage","Snorkeling Conditions at Nepean Island",{"@context":16,"@type":31,"itemListElement":32},"BreadcrumbList",[33,38],{"@type":34,"position":35,"name":36,"item":37},"ListItem",1,"Home","https:\u002F\u002Fhowsthespot.com",{"@type":34,"position":39,"name":18,"item":12},2,[41,43],{"label":36,"href":42},"\u002F",{"label":18,"href":44},"\u002Fspots\u002Fnepean-island",{"id":46,"name":18,"slug":47,"latitude":22,"longitude":23,"description":48,"difficulty":49,"image_url":13,"status":50,"tide_constituents":51,"hazard_entries":102,"access_info_structured":121,"area_boundary":107,"routes":107,"created_at":125,"updated_at":126,"today_conditions":127,"today_verdict_view":149,"images":177,"submitted_by":195,"region_name":107,"verification_status":197,"verified_at":107,"disputed":140,"verifier_count":5,"last_verified_display_name":107},"64da1320-f81e-4e3e-96d0-f4c872d04c10","nepean-island","Nepean Island is a small uninhabited limestone islet rising 800 m south of Norfolk Island's Kingston coast. Unlike its volcanic neighbours, this Late Pleistocene calcarenite outcrop is ringed by tall cliffs and surrounded by clear, nutrient-rich waters that draw vibrant marine life. The island's isolation and protected status within Norfolk Island National Park means the surrounding reef system is pristine. Snorkelers circle the perimeter by boat or kayak, exploring the rocky drop-offs, underwater ledges, and coral gardens where tropical fish, turtles, and reef sharks are frequently sighted. The dramatic contrast of the white limestone cliffs against the deep blue Pacific creates a stunning backdrop for an adventurous off-shore snorkel experience.","advanced","published",{"name":52,"amplitude":68,"phase":84,"latitude":22,"model":100,"epoch":101},[53,54,55,56,57,58,59,60,61,62,63,64,65,66,67],"2N2","J1","K1","K2","M2","M4","MF","MM","N2","O1","P1","Q1","S1","S2","T2",[69,70,71,72,73,74,75,76,77,78,79,80,81,82,83],0.012948883529705494,0.007137395254396528,0.1026753592749409,0.04080328936054152,0.5296903053270916,0.0022712504859599683,0.0007570785711820295,0.0026756808333243,0.09150939378043835,0.04355871671071404,0.027128442461282466,0.00977334780988561,0.004663209989263717,0.14418526226337142,0.010739224654659495,[85,86,87,88,89,90,91,92,93,94,95,96,97,98,99],247.2724262341751,27.043017600538537,11.796283390211704,295.23054888575814,259.5240476160162,211.33441272433518,18.939677586098203,118.95167837035758,240.28878351729162,337.1987145922038,2.020559907862203,306.14182062075326,319.1664891336567,303.0423356481375,341.74157392123686,"EOT20","1992-01-01T00:00:00Z",[103,108,113,117],{"name":104,"description":105,"severity":106,"season_start":107,"season_end":107},"Cliff-bound shoreline — no landing","Nepean Island is encircled by tall cliffs making landfall nearly impossible for small boats. Snorkeling is done from a boat or kayak, not from shore.","danger",null,{"name":109,"description":110,"severity":111,"season_start":35,"season_end":112},"Channel tidal currents","The channel between Norfolk Island and Nepean Island can experience strong tidal currents, especially during changing tides.","warning",12,{"name":114,"description":115,"severity":111,"season_start":116,"season_end":112},"Ocean swell exposure","The island is exposed to open Pacific swells, creating rough seas and surge conditions around the reef edge.",6,{"name":118,"description":119,"severity":120,"season_start":107,"season_end":107},"Protected marine reserve rules","Marine reserve fishing restrictions apply — all marine life is protected in this national park area.","caution",{"directions":122,"parking":123,"facilities":107,"fees":107,"access_method":124},"Nepean Island lies about 800 m south of Norfolk Island, opposite Kingston. Access is by private boat or kayak from Norfolk Island's southern coast. Landfall is extremely difficult due to tall cliffs—this is primarily a snorkeling destination around the island's perimeter, not a beach landing.","Park at the Kingston area on Norfolk Island's southern shore, then launch from there. No parking on Nepean Island itself.","boat","2026-07-27T02:53:56.176551Z","2026-08-04T05:32:31.002716Z",{"verdict":128,"evaluated_at":129,"models":130},"go","2026-10-03T02:17:22.511062Z",[131,138,144],{"model_name":132,"is_favourable":133,"value":134,"threshold":135,"unit":136,"operator":137},"Wind Speed",true,2.47,10,"kn","lte",{"model_name":139,"is_favourable":140,"value":141,"threshold":142,"unit":143,"operator":137},"Wave Height",false,0.8,0.5,"m",{"model_name":145,"is_favourable":140,"value":146,"threshold":39,"unit":147,"operator":148},"Visibility",0.99,"","gte",{"verdict":128,"rating":150,"evaluated_at":129,"generated_at":129,"source":151,"confidence":152,"visibility":155,"parameters":156,"models_passed":39,"models_total":172},"Good","precomputed",{"level":153,"value":154},"High",100,{"score":146,"rating":107,"confidence":107},[157,159,165,168,174],{"name":139,"value":158,"label":107,"unit":143,"favourable":140,"score":35,"optimal_max":142,"marginal_max":35},0.7999553156927298,{"name":160,"value":161,"label":107,"unit":162,"favourable":133,"score":163,"optimal_max":164,"marginal_max":112},"Swell Period",6.35,"s",3,8,{"name":132,"value":166,"label":107,"unit":136,"favourable":133,"score":163,"optimal_max":135,"marginal_max":167},2.474775326582339,15,{"name":169,"value":170,"label":107,"unit":171,"favourable":140,"score":35,"optimal_max":172,"marginal_max":173},"Precipitation",19.9,"mm",5,20,{"name":175,"value":107,"label":176,"unit":147,"favourable":140,"score":35,"optimal_max":107,"marginal_max":107},"Tidal Phase","ebb",[178,185,192],{"id":179,"image_url":13,"sort_order":5,"is_primary":133,"moderation_status":180,"license":181,"license_url":182,"attribution":183,"author_name":184},"1018e7c4-3aab-4c1d-8c3e-e62d530a193d","approved","CC BY-SA 2.0","https:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F2.0\u002F","Photo by Bob Hall from Christchurch, New Zealand","Bob Hall",{"id":186,"image_url":187,"sort_order":35,"is_primary":140,"moderation_status":180,"license":188,"license_url":189,"attribution":190,"author_name":191},"66d5b6dd-2c9a-4c77-a884-8f1817b5b7bb","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_nepean-island_1_5071f81b49eb.jpg","CC BY 3.0","https:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby\u002F3.0\u002F","Photo by Steve Daggar","Steve Daggar",{"id":193,"image_url":194,"sort_order":39,"is_primary":140,"moderation_status":180,"license":188,"license_url":189,"attribution":190,"author_name":191},"fc180bf5-7632-4ce5-a7c7-bd59ad1488b9","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_nepean-island_2_8703d20048d0.jpg",{"display_name":196},"Daniel","unverified",1791009179088]