[{"data":1,"prerenderedAt":204},["ShallowReactive",2],{"leaderboard-total":3,"spot-withnell-bay":9,"spot-seo-withnell-bay":170},{"entries":4,"total":5,"period":6,"type":7,"generated_at":8},[],0,"all_time","reports","2026-10-02T06:59:37.379659Z",{"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":98,"area_boundary":75,"routes":75,"created_at":104,"updated_at":105,"today_conditions":106,"today_verdict_view":128,"images":158,"submitted_by":166,"region_name":168,"verification_status":169,"verified_at":75,"disputed":156,"verifier_count":5,"last_verified_display_name":75},"531170ae-7818-4673-89be-d7d3e06973a1","Withnell Bay","withnell-bay",-20.58098,116.787947,"Withnell Bay lies on the south-western edge of Murujuga National Park on the Burrup Peninsula, a short 25-minute drive from Karratha. This sheltered bay offers a sandy entry beside a small boat ramp, leading to calm, shallow waters (max 5–6m) dotted with patches of hard and soft coral. Snorkelers can explore a sandy bottom with scattered coral bommies, weedy patches, and increasing coral density further out. The bay is flanked by mangroves and red rocky hills, and the surrounding national park is home to one of the world's greatest collections of ancient Aboriginal petroglyphs — a stunning cultural backdrop to a peaceful snorkel.","beginner","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_withnell-bay_0_47e46b137238.jpg","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],0.01803420355041334,0.009704254813750179,0.22994977565939795,0.17645959517315932,1.0737032132673239,0.015792941602466012,0.011609517804523004,0.0029920599790837664,0.19052282717838115,0.14214068529162094,0.06736533635856184,0.03148130750786093,0.02140226756094445,0.626819758792885,0.030209878829787276,[53,54,55,56,57,58,59,60,61,62,63,64,65,66,67],18.08024395270715,185.09726215346393,171.81832559493387,128.87020877017483,70.01275298049762,37.06955218488281,2.1815659675071686,232.9428382513397,42.475353748215525,160.4096634947295,164.59441016450182,156.63688234781364,7.163908703158029,131.52300786789215,142.64827026285354,"EOT20","1992-01-01T00:00:00Z",[71,76,80,83,86,89,92,95],{"name":72,"description":73,"severity":74,"season_start":75,"season_end":75},"Boat traffic","Weekend boat traffic can be busy; boats sometimes explore the bay. A dive flag must be displayed when in the water.","warning",null,{"name":77,"description":78,"severity":79,"season_start":75,"season_end":75},"Limited visibility","Visibility is generally less than 5m in warmer months and up to 10m in cooler months.","caution",{"name":81,"description":82,"severity":79,"season_start":75,"season_end":75},"Rough access track","The final 2.5–3 km track from the national park entrance to the beach is unsealed and rough; a 4WD or high-clearance AWD is strongly recommended.",{"name":84,"description":85,"severity":79,"season_start":75,"season_end":75},"Sharp rocks and coral at entry","The entry point is a sandy gap amongst rocks. Snorkelers should wear reef shoes or fins and avoid standing on coral.",{"name":87,"description":88,"severity":79,"season_start":75,"season_end":75},"Limited visibility (warm months)","Visibility is generally less than 5 m during warmer months (November to April), reducing to under 10 m in cooler months.",{"name":90,"description":91,"severity":79,"season_start":75,"season_end":75},"Rocky entry","Entry is a sandy gap amongst rocks — care needed when entering and exiting, especially at low tide.",{"name":93,"description":94,"severity":79,"season_start":75,"season_end":75},"Outgoing tide current","Scuba diving is best at slack high tide; outgoing tidal flow can reduce visibility and increase effort for snorkelers.",{"name":96,"description":97,"severity":79,"season_start":75,"season_end":75},"Sharp coral and marine life","Fragile corals and marine life present — standing on or touching coral is prohibited. Wetsuit or rash guard recommended for protection.",{"directions":99,"parking":100,"facilities":101,"fees":102,"access_method":103},"From Karratha: head west on Dampier Hwy towards Dampier for 16.2 km past Madigan Rd, turn right onto Burrup Rd (brown sign for Withnell Bay). Follow Burrup Rd for 9.3 km through Burrup, then turn right at the brown Withnell Bay sign. Follow the unsealed track for 2.5–3 km to reach the beach. From Dampier: head south on Dampier Hwy, 1.7 km after the Red Dog statue turn left into Burrup Rd, then follow the same route.","Unsealed parking area near the beach. No formal parking bays. Suitable for high-clearance vehicles.",[],"Free entry. Murujuga National Park may require a park entry fee if entering via the national park gate.","shore_entry","2026-07-27T02:59:33.461756Z","2026-08-04T05:32:31.002486Z",{"verdict":107,"evaluated_at":108,"models":109},"go","2026-10-02T02:17:42.811731Z",[110,117,122],{"model_name":111,"is_favourable":112,"value":113,"threshold":114,"unit":115,"operator":116},"Wind Speed",true,3.77,10,"kn","lte",{"model_name":118,"is_favourable":112,"value":119,"threshold":120,"unit":121,"operator":116},"Wave Height",0.212,0.5,"m",{"model_name":123,"is_favourable":112,"value":124,"threshold":125,"unit":126,"operator":127},"Visibility",3,2,"","gte",{"verdict":107,"rating":129,"evaluated_at":108,"generated_at":108,"source":130,"confidence":131,"visibility":134,"parameters":135,"models_passed":157,"models_total":151},"Excellent","precomputed",{"level":132,"value":133},"High",100,{"score":124,"rating":75,"confidence":75},[136,139,145,148,153],{"name":118,"value":137,"label":75,"unit":121,"favourable":112,"score":124,"optimal_max":120,"marginal_max":138},0.21150276986117975,1,{"name":140,"value":141,"label":75,"unit":142,"favourable":112,"score":124,"optimal_max":143,"marginal_max":144},"Swell Period",3.5,"s",8,12,{"name":111,"value":146,"label":75,"unit":115,"favourable":112,"score":124,"optimal_max":114,"marginal_max":147},3.7734811912007875,15,{"name":149,"value":5,"label":75,"unit":150,"favourable":112,"score":124,"optimal_max":151,"marginal_max":152},"Precipitation","mm",5,20,{"name":154,"value":75,"label":155,"unit":126,"favourable":156,"score":138,"optimal_max":75,"marginal_max":75},"Tidal Phase","flood",false,4,[159],{"id":160,"image_url":17,"sort_order":5,"is_primary":112,"moderation_status":161,"license":162,"license_url":163,"attribution":164,"author_name":165},"0e9ab091-9aec-4cea-af0c-44f3f199132e","approved","CC BY-SA 2.0","https:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F2.0\u002F","Photo by Jim Bendon from Karratha, Australia","Jim Bendon from Karratha, Australia",{"display_name":167},"Daniel","Western Australia","unverified",{"title":171,"description":172,"canonical_url":173,"og_image":17,"structured_data":174,"breadcrumbs":197},"Snorkeling Conditions at Withnell Bay - How's the Spot","Check snorkeling conditions at Withnell Bay, Western Australia. Excellent conditions, water 26.6°C, waves 0.21m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Fwithnell-bay",[175,184],{"@context":176,"@type":177,"name":11,"description":178,"url":173,"geo":179,"address":181},"https:\u002F\u002Fschema.org","Place","Withnell Bay lies on the south-western edge of Murujuga National Park on the Burrup Peninsula, a short 25-minute drive from Karratha. This sheltered bay offers a sandy entry beside a small boat ram...",{"@type":180,"latitude":13,"longitude":14},"GeoCoordinates",{"@type":182,"addressRegion":168,"addressCountry":183},"PostalAddress","Australia",{"@context":176,"@type":185,"name":186,"description":172,"url":173,"breadcrumb":187},"WebPage","Snorkeling Conditions at Withnell Bay",{"@context":176,"@type":188,"itemListElement":189},"BreadcrumbList",[190,194,196],{"@type":191,"position":138,"name":192,"item":193},"ListItem","Home","https:\u002F\u002Fhowsthespot.com",{"@type":191,"position":125,"name":168,"item":195},"https:\u002F\u002Fhowsthespot.com\u002Fexplore?region=western-australia",{"@type":191,"position":124,"name":11,"item":173},[198,200,202],{"label":192,"href":199},"\u002F",{"label":168,"href":201},"\u002Fexplore?region=western-australia",{"label":11,"href":203},"\u002Fspots\u002Fwithnell-bay",1790924525333]