PierMonkey

Sunset Beach Alert Guide

Hawaii, USA · part of the Sunset Beach spot guide

The Waimea Bay buoy (51201) is a waves-only Waverider that reports no wind, so this observation alert keys on swell only — judge wind separately. The height below is the buoy’s open-ocean reading, not the true face, and the North Shore local scale reports about half the true face again.

The forecaster's checklist

  1. 1.Read the Waimea buoy (51201) direction first — want northwest to west-northwest, ideal around 315 to 320°; pure west is sectiony and strong-rip, far north-northeast is smaller.
  2. 2.Prioritise period — 14 seconds and up is organised and powerful, under 10-to-11 seconds is junky and shifty in a bad way.
  3. 3.Judge size knowing the buoy height is not the face, and remember the Hawaiian-scale halving when reading local reports — a few feet of buoy height switches on the Point, ten feet and up lights West Peak.
  4. 4.Judge wind separately — the buoy has no wind field — and want a light south or south-southeast offshore or a glassy pre-trade dawn, killing it on a strong onshore northwest.
  5. 5.Respect the rip, which scales with the swell and can reverse on big west swells — plan the paddle-out and the exit before entering.

Local winds & tide

Best wind: S–SSE offshore (or glassy dawn) — from 150° to 210° (SSE–SSW).

Tide matters despite a modest range — low-to-mid tide favours the Inside Bowl and Main Peak for punch and shape, mid-to-high the softer inside, and bigger long-period swell tolerates more tide.

Dial it in

The dial-up: alert settings that catch it

When ALL of these line up in live buoy readings, this spot is turning on.

NNNENEENEEESESESSESSSWSWWSWWWNWNWNNWswell window270°→30°best ~315°
Open-ocean swell height
≥ 5 ft
Swell period
≥ 13 s
Swell direction (from)
270°–30° (W–NNE)
Set this alertEvaluated at buoy 51201 (8 km away)
Researched from published surf journalism, oceanographic references and chart data; figures are approximate and confidence-checked. Updated 2026-07-06.