WHEN.SURF FORECAST FOR Oahu North Shore

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🌅6-8a 😕 Swell 5/5Wind 070° 19G24kt

Trade-wind NE windswell dominates the sea state, but the rideable surf comes from a fading NW 14s pulse. Expect shoulder to overhead sets at exposed reefs, with long-ish waits and plenty of cross-chop from strong ENE trades. Rising tide toward a mid-morning high won’t hurt the reefs but the wind will keep it bumpy.

  • Typical waves:head
  • Sets:well-overhead, lully
  • Surface:sideshore
  • Wind:070° 19G24kt
  • Tide:▲1.4ft 10:18a
  • Spectrum:
    • 038° 7.3ft 10s
    • 324° 3.5ft 14s
8-10a 😕 Swell 5/5Wind 070° 19G24kt

NW long-period sets are easing but still good for head-high plus at the better exposures. Trades from the ENE continue to push sideshore texture and chop over the lineup. Approaching the 10:18a high tide may soften takeoffs a touch; windswell remains the dominant bump in the water.

  • Typical waves:head
  • Sets:well-overhead, lully
  • Surface:sideshore
  • Wind:070° 19G24kt
  • Tide:▲1.4ft 10:18a
  • Spectrum:
    • 040° 7.1ft 10s
    • 324° 3.3ft 14s
10a-2p 😕 Swell 4/5Wind 080° 20G26kt

Post–high tide the NW energy continues to back off and trend shorter in period, while trades freshen from the ENE. Expect chest to head-high+ at the best exposures, with mixed-up lines and cross-bump. Long-period sets are less frequent through midday, and the wind limits quality.

  • Typical waves:shoulder
  • Sets:overhead, lully
  • Surface:sideshore
  • Wind:080° 20G26kt
  • Tide:▲1.4ft 10:18a
  • Spectrum:
    • 042° 7.0ft 10s
    • 325° 3.1ft 13s
2-6p🌙 😕 Swell 3/5Wind 080° 18G23kt

Lower afternoon tide could add a little punch on the reefs, but NW energy keeps easing and trades remain brisk and sideshore. Look for shoulder to head-high sets where the NW is most exposed; lulls linger and the sea state stays jumbled. Mind the very low tide near 4:20p over shallow sections.

  • Typical waves:chest
  • Sets:overhead, lully
  • Surface:sideshore
  • Wind:080° 18G23kt
  • Tide:▼0.1ft 4:20p
  • Spectrum:
    • 043° 6.6ft 10s
    • 325° 2.9ft 13s

tomorrow

🌅6-10a 😕 Swell 3/5Wind 080° 16G20kt

Smaller leftover NW (now around 12s) mixes with persistent trade-wind NE chop. Expect waist to shoulder-high with occasional head-high sets at the most exposed reefs. Trades back down a notch but remain sideshore. A late-morning high tide may help fill in the inside but also can soften weaker spots.

  • Typical waves:stomach
  • Sets:head, lully
  • Surface:sideshore
  • Wind:080° 16G20kt
  • Tide:▲1.2ft 11:05a
  • Spectrum:
    • 048° 5.5ft 9s
    • 328° 1.9ft 12s
10a-2p 😕 Swell 2/5Wind 080° 16G20kt

NW swell fades further with mainly chest-high surf and shoulder-ish sets at the magnets. ENE trades remain moderate, keeping some texture and cross-bump in the water. Around the midday high, expect softer shape and less push except on the sharper outer reefs.

  • Typical waves:waist
  • Sets:shoulder, lully
  • Surface:sideshore
  • Wind:080° 16G20kt
  • Tide:▲1.2ft 11:05a
  • Spectrum:
    • 047° 5.2ft 9s
    • 328° 1.7ft 12s
2-6p🌙 😴 Swell 1/5Wind 080° 17G22kt

Small, mixed surf with sideshore trades: waist-high with occasional chest-shoulder sets at the best exposures. The low tide near 4:43p can add a little zip on shallow reefs but also exposes more rock. Winds remain moderate and keep it crumbly; sets grow scarce toward dusk.

  • Typical waves:thigh
  • Sets:chest, sparse
  • Surface:sideshore
  • Wind:080° 17G22kt
  • Tide:▼0.1ft 4:43p
  • Spectrum:
    • 046° 4.9ft 9s
    • 329° 1.6ft 12s

A broad high well north of Hawaii is driving fresh to strong ENE trades, stacking up short-period NE windswell and chop. Underneath, a small to moderate long-period NW swell that peaked Wednesday is fading through Thursday and Friday. East-shore surf is advisory-level, but North Shore surf stays below advisory with cross-chop a frequent guest.

Looking ahead: Expect a smaller reinforcing NW pulse late Saturday into Sunday, with periods in the mid-teens and modest size. Trades ease a notch into the weekend, which could help surface conditions at times. Another front-supported NW pulse may arrive early next week, but confidence dips on details; plan for modest surf with typical trade winds in the meantime.


Legend (examples)
Rating
🙂
average+
Swell
Swell 3/5
chest-high typical
Wind
Wind 060° 15kts
060° 15kts (barbs)