How Warm Will the NINO3.4 Region Get....Exactly? - Video HERE (8/16/26)

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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:   Monday, August 17, 2026 1:43 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 Tuesday 8/18 Down E 15 No swell of interest forecast 2 ft or less --- Wednesday 8/19 Down E 10+ No swell of interest forecast 2 ft or less --- Thursday 8/20 Down ENE 5+ No swell of interest forecast 2 ft or less --- Friday 8/21 Down E 10+ No swell of interest forecast 2 ft or less --- Saturday 8/22 Down E 10+ No swell of interest forecast 2 ft or less --- Extended Outlook Down --- No swell producing weather systems of interest are forecast. --- --- 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 Tuesday 8/18 Down some ENE 10 New Zealand background swell fading from 2.0 ft @ 13-14 secs early 2.5 ft 180 degrees Wednesday 8/19 Down more ENE 5+ New Zealand background swell fading from 1.6 ft @ 12-13 secs early 2.0 ft 180 degrees Thursday 8/20 Down ENE 1-5 No swell of interest forecast 2 ft or less --- Friday 8/21 Down ENE 5+ No swell of interest forecast 2 ft or less --- Saturday 8/22 Down ENE 10+ No swell of interest forecast 2 ft or less --- Extended Outlook Down --- A broad gale developed while tracking NE from under New Zealand Wed-Fri (7/7) with seas 26-29 ft aimed well north. Swell weakly holding through Wed (8/19). No other clearly defined swell producing weather systems are forecast for the South Pacific. --- --- 24794

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