Surf Forecast for Oahu North Shore

Small NNW-midperiod swell with a hint of NNE windswell. Trades near 15 kts blow sideshore, adding texture. Incoming morning tide toward a 9:19a high helps the small surf a touch. Expect thigh-high with occasional waist-chest pulses at best magnets and some lulls between sets. Fun corners if you hunt, but generally modest and ruffled.

N swell trends up a notch late morning through midday, still midperiod. Trades stay 13–15 kt from the E, so most lineups are sideshore and ruffled. The dropping tide into afternoon may soften smaller spots. Average breaks around waist, with shoulder-ish sets at the better reefs—more frequent than early, but wind keeps it average- at best.

Afternoon sees the day’s peak in north energy (near 9s) with more frequent sets. Trades ease slightly but remain sideshore. The late low around 4:55p can make it a bit racy and sectiony at smaller spots; best reefs still offer chest-plus with shoulder-ish sets. Manage the wind and timing and you’ll find some fun runners before dusk.

North-northerly midperiod pulse holds into the morning with the most consistent sets. Trades drop a notch (around 10–12 kt) but remain side-off, keeping light texture. Rising tide toward a 10:24a high helps shape on the reefs. Expect chest to shoulder with near head-high sets at magnets—most consistent window of the day if you tuck from the breeze.

N energy eases a touch through the afternoon but stays steady enough for chest-plus with head-ish sets at the best reefs. Trades hover near 10 kt from the E with sideshore texture; scattered showers may brush the coast toward evening. The falling tide into a 5:09p low can speed things up—look for reefs that like less water.