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Stormsurf Mobile App Create Your Own Surf Forecast Swell Calculator Swell Decay Tables Sea Height Tables Swell Category Table Convert from GMT:   0Z 1Z 2Z 3Z 4Z 5Z 6Z 7Z 8Z 9Z 10Z 11Z 12Z 13Z 14Z 15Z 16Z 17Z 18Z 19Z 20Z 21Z 22Z 23Z  to timezone: IDLE/NZST AEDT GST/AEST --> JST/AWDT CCT/AWST WAST/CXT --> MSD BT/MSK EET/CEST CET/SWT GMT/UTC WAT AT ADT AST/EDT EST/CDT CST/MDT MST/PDT PST/YDT YST/HADT AHST/HAST NT IDLW 7:00 ---

QuikCAST Surf Forecast - Hawaii 5 Day Surf Forecast Forecast Updated:   Thursday, September 17, 2026 12:15 PM Surf Scale: 3 ft = waist high, 4 ft = chest high, 5 ft = head high, 10 ft =double overhead Swell Direction is direction swell is coming from. 90°=East, 180°=South, 270°=West, 360-0 = North Forecast does NOT account for enhancing bathymetry (i.e the 'reef effect') common at best breaks. For top spots with swell period 14 +secs, multiply surf size X 1.25-1.5 with peaks X 2 (or consider the stated size 'Hawaiian Scale'). Hawaiian North Shore Surf Forecast (Valid for the North and East Shores of Oahu) Day Trend Wind (kts) Details (Swell Number, Swell Size & Period, Arrival Time and Profile) Waves (Set wave max face height) Swell Direction Friday 9/18 Down E 15+ No swell of interest forecast 2 ft or less --- Saturday 9/19 Down E 15+ No swell of interest forecast 2 ft or less --- Sunday 9/20 Down ENE 15+ No swell of interest forecast 2 ft or less --- Monday 9/21 Down ENE 15+ No swell of interest forecast 2 ft or less --- Tuesday 9/22 Down ENE 20+ No swell of interest forecast 2 ft or less --- Extended Outlook Up slightly --- No tropical systems are forecast in the HI swell window. The North Pacific is forecast to start producing a few stray fetch areas of 20 ft seas aimed east. --- --- Surf Height Animation: Northeast Pacific - Hawaii Wind Animations: Northeast Pacific - Hawaii - Hawaii hires Local Model: Surf - Wind Hawaiian South Shore Surf Forecast (Centered on the South Shore of Oahu) Day Trend Wind (kts) Details (Swell Number, Swell Size & Period, Arrival Time and Profile) Waves (Set wave max face height) Swell Direction Friday 9/18 Up some ENE 10+ New Zealand swell building to 2.2 ft @ 17 secs later 3.5-4.0 ft 220 degrees Saturday 9/19 Down some ENE 10+ New Zealand swell fading from 2.1 ft @ 16 secs early 3.0-3.5 ft 220 degrees Sunday 9/20 Down some ENE 10+ New Zealand swell 2.2 ft @ 15-16 secs early 3.0-3.5 ft 205 degrees Monday 9/21 Down some ENE 15 New Zealand swell fading from 2.2 ft @ 14 secs early 3.0 ft 195 degrees Tuesday 9/22 Down more ENE 15+ New Zealand swell fading from 1.8 ft @ 12-13 secs early 2.0-2.5 ft 215 degrees Extended Outlook Up some --- A gale formed under Tasmania moving under New Zealand starting Thurs (9/10) with 35 ft seas aimed east producing a secondary gale just east of New Zealand Sun (9/13) with 27-28 ft seas aimed northeast. Swell builds some on Fri (9/18). And another is forecast in the same area Fri-Sun (9/20) with 36-43 ft seas aimed northeast. --- --- 28378

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