[{"data":1,"prerenderedAt":181},["ShallowReactive",2],{"leaderboard-total":3,"spot-seo-helms-deep":9,"spot-helms-deep":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 Helms Deep - How's the Spot","Check snorkeling conditions at Helms Deep, Queensland. Excellent conditions, water 24.1°C, waves 0.13m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Fhelms-deep","https:\u002F\u002Fhowsthespot.com\u002Fog-default.png",[15,28],{"@context":16,"@type":17,"name":18,"description":19,"url":12,"geo":20,"address":24},"https:\u002F\u002Fschema.org","Place","Helms Deep","Helms Deep is a dramatic outer Great Barrier Reef snorkel and dive site located off Saxon Reef, about 60 km northeast of Cairns in North Queensland. 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Named for the Lord of the Rings fortress, this site features a rugged underwater terrain of scattered coral bommies, coral gardens, and gutters that create a maze-like seascape. Grey reef sharks are frequently spotted cruising the sandy channels between bommies, while the coral heads host vibrant marine life. Depths range from 5 to 15 metres, making it suitable for confident snorkellers and beginner divers alike. The site is typically visited by liveaboard and day-tour vessels from Cairns and Port Douglas.","intermediate",null,"published",{"name":59,"amplitude":75,"phase":91,"latitude":22,"model":107,"epoch":108},[60,61,62,63,64,65,66,67,68,69,70,71,72,73,74],"2N2","J1","K1","K2","M2","M4","MF","MM","N2","O1","P1","Q1","S1","S2","T2",[76,77,78,79,80,81,82,83,84,85,86,87,88,89,90],0.02532879619026696,0.018967993665239314,0.3103107938347572,0.08630040233305715,0.5242941098234337,0.003003547673725404,0.010844905564404008,0.008413502042888037,0.17971947078348774,0.15098427223509167,0.08476891053630436,0.024261131670373436,0.007436864232461709,0.30312243378418324,0.033904171134016683,[92,93,94,95,96,97,98,99,100,101,102,103,104,105,106],317.8540650939441,51.65688306025964,39.450938497346925,299.3851804399589,343.84404297165764,225.01860299399746,5.226679925499596,37.352850226055345,327.6622826541477,12.361385066440807,37.33633319628785,355.5245751823415,340.18875363863134,304.20791841392435,269.97780812849777,"EOT20","1992-01-01T00:00:00Z",[110,114,117],{"name":111,"description":112,"severity":113,"season_start":56,"season_end":56},"Tidal currents","Moderate currents can run through the channels between bommies, especially on changing tides.","caution",{"name":115,"description":116,"severity":113,"season_start":56,"season_end":56},"Shark presence","Grey reef sharks are common here; while generally non-aggressive, they can be curious around snorkellers.",{"name":118,"description":119,"severity":120,"season_start":56,"season_end":56},"Open ocean swell","The site is exposed to open ocean swell, with conditions varying quickly.","warning",{"directions":122,"parking":123,"facilities":56,"fees":56,"access_method":124},"Helms Deep is an outer Great Barrier Reef dive and snorkel site near Saxon Reef, accessible only by boat from Cairns or Port Douglas. Most tour operators include it as part of a full-day outer reef snorkel trip.","Park at the marina or tour operator's designated parking in Cairns or Port Douglas. Parking fees may apply in the city centre.","snorkel_tour","2026-07-27T02:56:47.347762Z","2026-08-04T05:36:16.070308Z",{"verdict":128,"evaluated_at":129,"models":130},"go","2026-10-03T02:18:54.732768Z",[131,138,143],{"model_name":132,"is_favourable":133,"value":134,"threshold":135,"unit":136,"operator":137},"Wind Speed",true,8.66,10,"kn","lte",{"model_name":139,"is_favourable":133,"value":140,"threshold":141,"unit":142,"operator":137},"Wave Height",0.13,0.5,"m",{"model_name":144,"is_favourable":133,"value":145,"threshold":40,"unit":146,"operator":147},"Visibility",2.15,"","gte",{"verdict":128,"rating":149,"evaluated_at":129,"generated_at":129,"source":150,"confidence":151,"visibility":154,"parameters":155,"models_passed":176,"models_total":170},"Excellent","precomputed",{"level":152,"value":153},"High",100,{"score":145,"rating":56,"confidence":56},[156,157,163,166,172],{"name":139,"value":140,"label":56,"unit":142,"favourable":133,"score":43,"optimal_max":141,"marginal_max":36},{"name":158,"value":159,"label":56,"unit":160,"favourable":133,"score":43,"optimal_max":161,"marginal_max":162},"Swell Period",5.75,"s",8,12,{"name":132,"value":164,"label":56,"unit":136,"favourable":133,"score":43,"optimal_max":135,"marginal_max":165},8.6598072,15,{"name":167,"value":168,"label":56,"unit":169,"favourable":133,"score":43,"optimal_max":170,"marginal_max":171},"Precipitation",4.4,"mm",5,20,{"name":173,"value":56,"label":174,"unit":146,"favourable":175,"score":36,"optimal_max":56,"marginal_max":56},"Tidal Phase","flood",false,4,[],{"display_name":179},"Daniel","unverified",1791009159734]