CatchWindow fishing intelligence

Pearl Harbor, HI Daily Water Report — October 4, 2026

Pearl Harbor gets a qualified green light today: diving is the standout at 8.9/10, with sailing and boating also in solid territory, while paddlers should treat the afternoon gusts with more respect than optimism. The cleanest all-around window is early, from dawn through roughly midmorning. Waves bottom out near 1.06 m around 8 AM before holding close to 1.1–1.2 m through the day, and the northeast wind is lighter before its gustier afternoon turn. Water is warm at 26.9 C, marine SST is 27.7 C, and the available water-quality indicators support the strong diving score—though the reported 5.54 km visibility is atmospheric visibility, not a promise of underwater range. The low tide at 3:40 AM has already passed by first light; water rises toward a modest 0.66 m high at 11:38 AM, then drains to the day’s lowest tide, 0.08 m, at 7:22 PM. Anglers have a fair-to-good 6.5/10 setup, with the best timing around the 6:37–8:37 AM solunar major period. Rising pressure near 1016 hPa and the morning tide push help the case, but wind and a rain window from 9 AM to 8 PM keep it from being a banner-call. The evening major period, 6:37–8:37 PM, overlaps the falling tide and low-water finish, so shoreline access and footing deserve extra attention. Boaters rate 7/10 and sailors 7.5/10: enough northeast breeze for a useful sail, but gusts could reach 26.2 knots around 4 PM. That same gust spread knocks kayaking down to 5.9/10 despite a modest current of about 0.08 m/s toward the northwest. Small craft should make the morning count rather than negotiate with the afternoon. The 1.14 m seas include a 0.68 m south swell at 9.6 seconds and short 0.62 m wind waves, a combination that can feel busier than the headline height suggests. Compared with yesterday, diving is essentially unchanged, while boating, fishing, and kayaking all ease back as winds become more assertive. Rain chances remain elevated through the coming week; seas stay near 1.1–1.2 m through Wednesday, then build toward 1.4–1.5 m by next weekend. Best bet: be in the water early—dive, fish, or make your run before the northeast gusts start writing the afternoon’s agenda.