Active MJO Pushes East - What Effect Will Coming Inactive Phase Have? - Video Forecast HERE (12/7/25)

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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:   Tuesday, December 9, 2025 1:03 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 Wednesday 12/10 Up some SW 5+ New Dateline swell 5.4 ft @ 15 secs early 8.0 ft 320 degrees Thursday 12/11 Down some N 10 Dateline swell 5.2 ft @ 12-13 secs late AM 6.5 ft 325 degrees Friday 12/12 Down some SE 5+ Dateline swell fading from 3.8 ft @ 11 secs early 4.0 ft 325 degrees Saturday 12/13 Down some SW 10 Dateline swell fading from 3.8 ft @ 10-11 secs 4.0 ft 340-345 degrees Sunday 12/14 Down some S 5+ Dateline swell fading from 2.4 ft @ 10 secs early 2.0-2.5 ft 350 degrees Extended Outlook Down --- A small gale developed while tracking east from the dateline to the Gulf Sat-Tues (12/9) producing 26-27 ft seas aimed east. Swell arriving on Wed (12/10). Nothing else meaningful to follow with the Inactive Phase of the MJO in control. A small gale is to develop just west of the dateline Thurs (12/11) with 31 ft seas aimed east. Another tiny gale is to develop off the Kuril on Mon (12/15) with 37 ft sea aimed east. no meaningful swell is to result. --- --- 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 Wednesday 12/10 Down SW 5+ No swell of interest forecast 2 ft or less --- Thursday 12/11 Down N 5 No swell of interest forecast 2 ft or less --- Friday 12/12 Down SE 5 No swell of interest forecast 2 ft or less --- Saturday 12/13 Down SW 10+ No swell of interest forecast 2 ft or less --- Sunday 12/14 Down S 5+ No swell of interest forecast 2 ft or less --- Extended Outlook Down --- No swell producing weather systems of interest are forecast. --- --- 1813

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