CatchWindow fishing intelligence

Nawiliwili, HI Daily Water Report — October 4, 2026

Nawiliwili is a selective yes today: diving and sailing have the strongest case, while small-craft plans deserve more caution than yesterday. The water is warm at 27°C and the diving score leads the board at 8.4/10, but that is not a blank check—1.6 to 1.8 m seas, a 14-knot northeast wind, and gusts that could reach 31 knots by mid-afternoon mean exposed entries and exits may be the whole story. The best all-around daylight window is early, roughly dawn through mid-morning. Winds begin nearer the day’s lower range before building, and the 11:27 AM high tide follows a 0.12 m pre-dawn low. Fishing rates a workable 6.5/10, with a useful solunar major period from 6:43 to 8:43 AM; rising pressure near 1017 hPa is another modest plus in the score’s weather mix. The evening major period, 6:43 to 8:43 PM, overlaps dusk and the 7:17 PM low tide, so it is more of a shoreline-timing option than an invitation to stretch the day offshore. Sailing earns 7.3/10 because there is enough northeast breeze to make things happen, but it will be a gusty version of fun. Boating slips to 5.6 and kayaking to 4.9 as short-period 1.18 m wind waves at 4.2 seconds add chop to the 0.74 m southerly swell. The forecast rain window from 11 AM to 2 PM is light in total, yet it coincides with the period when the wind is likely becoming more insistent. Atmospheric visibility is only 5.8 km; that is a navigation consideration, not a statement about underwater visibility. Compared with October 3, the wind has jumped from 5.8 knots to a representative 14 knots, and boating and kayaking scores have both fallen sharply. Diving remains strong, only slightly below yesterday’s 8.6, while sailing improves on the added breeze. The ocean current is modest at about 0.14 m/s toward 225°, but current, chop, and gusts can combine into more work than any single number suggests. The next few days look friendlier for smaller craft as waves ease to 1.2–1.4 m Tuesday and winds are forecast as low as 6.5 knots, though rain chances remain elevated; seas build again toward 1.7–2.0 m by Saturday. Best bet: make an early, well-planned dive or sail before the northeast gusts turn the afternoon into a grip-strength contest.