[{"data":1,"prerenderedAt":198},["ShallowReactive",2],{"leaderboard-total":3,"spot-seo-sister-island":9,"spot-sister-island":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 Sister Island - How's the Spot","Check snorkeling conditions at Sister Island, Tasmania. Good conditions, water 13.4°C, waves 0.17m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Fsister-island","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_sister-island_0_49f1b7b263b2.jpg",[15,28],{"@context":16,"@type":17,"name":18,"description":19,"url":12,"geo":20,"address":24},"https:\u002F\u002Fschema.org","Place","Sister Island","Sister Island is a small rocky islet off Sisters Beach on Tasmania's northwest coast, part of the Rocky Cape National Park area. This temperate snorkeling spot features a shallow bommie starting at...",{"@type":21,"latitude":22,"longitude":23},"GeoCoordinates",-40.900694,145.581944,{"@type":25,"addressRegion":26,"addressCountry":27},"PostalAddress","Tasmania","Australia",{"@context":16,"@type":29,"name":30,"description":11,"url":12,"breadcrumb":31},"WebPage","Snorkeling Conditions at Sister Island",{"@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=tasmania",{"@type":35,"position":43,"name":18,"item":12},3,[45,47,49],{"label":37,"href":46},"\u002F",{"label":26,"href":48},"\u002Fexplore?region=tasmania",{"label":18,"href":50},"\u002Fspots\u002Fsister-island",{"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":129,"area_boundary":119,"routes":119,"created_at":138,"updated_at":139,"today_conditions":140,"today_verdict_view":162,"images":189,"submitted_by":195,"region_name":26,"verification_status":197,"verified_at":119,"disputed":158,"verifier_count":5,"last_verified_display_name":119},"bf2c3978-2fca-4ec0-99af-bd2407b2e474","sister-island","Sister Island is a small rocky islet off Sisters Beach on Tasmania's northwest coast, part of the Rocky Cape National Park area. This temperate snorkeling spot features a shallow bommie starting at 7 metres, with a series of north-south gutters, overhangs, and holes dropping to 24 metres. The reef is draped in giant kelp (1.5-2m high) punctuated by colourful sponges, lace corals, large gorgonians, and vibrant yellow bryozoans. With 20-metre visibility reported in summer and water temps around 19°C, it offers a pristine cold-water experience teeming with temperate fish life.","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],0.03948986962157449,0.00816896105308308,0.1584287617333597,0.02550706652586082,1.1195153188977567,0.026261797633546864,0.008825513338043598,0.0013379004905287098,0.24804712830197945,0.10819703753221009,0.04853205828635723,0.027272951860771943,0.010154345104320546,0.14535906676452215,0.01720863313225187,[91,92,93,94,95,96,97,98,99,100,101,102,103,104,105],340.6497193491932,320.37950061715287,304.13088771902125,206.05436076661107,43.79117597837607,0.00818261928668562,179.67220505269722,286.08091326011134,14.281446682354247,277.00236462578204,298.1300107550743,259.4714436934868,21.865769652733665,185.44816650645112,187.3092685512298,"EOT20","1992-01-01T00:00:00Z",[109,115,120,123,126],{"name":110,"description":111,"severity":112,"season_start":113,"season_end":114},"Cold Water Temperatures","Water temperature averages 19°C in summer, much colder in winter — drysuit or thick wetsuit required.","warning",5,11,{"name":116,"description":117,"severity":118,"season_start":119,"season_end":119},"Strong Currents","Tidal currents sweep around the island, especially between the islet and the shoreline.","caution",null,{"name":121,"description":122,"severity":118,"season_start":119,"season_end":119},"Boat Traffic","Access is via boat only; snorkelers must share the area with dive boats and fishing vessels.",{"name":124,"description":125,"severity":118,"season_start":119,"season_end":119},"Deep Drop-offs","The reef slopes rapidly from 7m to 24m — beginners may find depth management challenging.",{"name":127,"description":128,"severity":118,"season_start":119,"season_end":119},"Kelp Entanglement","Dense giant kelp (1.5-2m high) covers the reef and can entangle fins and gear.",{"directions":130,"parking":131,"facilities":132,"fees":136,"access_method":137},"Launch from Sisters Beach boat ramp (on the eastern side of Sisters Beach, Rocky Cape National Park) or from Boat Harbour ramp further east. Sister Island is a short ~3 km boat run from the Sisters Beach ramp. The prime snorkeling spot is off the north-eastern corner of the island.","Parking available at the Sisters Beach Foreshore Parking Area, which includes BBQ facilities, picnic tables, and public toilets.",[133,134,135],"parking","toilets","picnic_tables","No specific fees for snorkeling, but Rocky Cape National Park entry fees may apply for car parking.","boat","2026-07-27T02:57:51.642467Z","2026-08-04T05:36:16.070457Z",{"verdict":141,"evaluated_at":142,"models":143},"go","2026-10-03T02:19:21.387103Z",[144,151,156],{"model_name":145,"is_favourable":146,"value":147,"threshold":148,"unit":149,"operator":150},"Wind Speed",true,2.95,10,"kn","lte",{"model_name":152,"is_favourable":146,"value":153,"threshold":154,"unit":155,"operator":150},"Wave Height",0.167,0.5,"m",{"model_name":157,"is_favourable":158,"value":159,"threshold":40,"unit":160,"operator":161},"Visibility",false,0.99,"","gte",{"verdict":141,"rating":163,"evaluated_at":142,"generated_at":142,"source":164,"confidence":165,"visibility":168,"parameters":169,"models_passed":43,"models_total":113},"Good","precomputed",{"level":166,"value":167},"High",100,{"score":159,"rating":119,"confidence":119},[170,172,178,181,186],{"name":152,"value":171,"label":119,"unit":155,"favourable":146,"score":43,"optimal_max":154,"marginal_max":36},0.16746251915347043,{"name":173,"value":174,"label":119,"unit":175,"favourable":146,"score":43,"optimal_max":176,"marginal_max":177},"Swell Period",4.8,"s",8,12,{"name":145,"value":179,"label":119,"unit":149,"favourable":146,"score":43,"optimal_max":148,"marginal_max":180},2.950135804440135,15,{"name":182,"value":183,"label":119,"unit":184,"favourable":158,"score":36,"optimal_max":113,"marginal_max":185},"Precipitation",13.5,"mm",20,{"name":187,"value":119,"label":188,"unit":160,"favourable":158,"score":36,"optimal_max":119,"marginal_max":119},"Tidal Phase","flood",[190],{"id":191,"image_url":13,"sort_order":5,"is_primary":146,"moderation_status":192,"license":193,"license_url":194,"attribution":119,"author_name":119},"51971a18-b366-4813-bc22-9543690aad37","approved","CC BY-SA 4.0","https:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F",{"display_name":196},"Daniel","unverified",1791009197012]