CatchWindow fishing intelligence

Nawiliwili, HI Daily Water Report — September 4, 2026

Sailing and surfing are the clear fits at Nawiliwili today; the same northeast wind and stubborn two-meter sea that reward those two make boating a compromise and kayaking a nonstarter. Forecast winds sit 9.9 to 13.2 knots from the northeast, with a representative 12 knots and gusts that can reach 29 knots around 13:00. That consistency, plus only 28 percent cloud cover, is what lifts sailing to 8.6/10. It is also why boating lands at 4.3/10 and kayaking at 2.4/10: those scores weigh wind, waves, current, and precipitation, and a 1.2 m/s set toward the north-northeast does not help anyone in a small hull. Scores are not safety declarations—just a read on how the inputs line up. Waves barely move, 2.3 to 2.4 meters all day, with the minimum still 2.26 meters near 08:00. A 1.46-meter swell at 8.5 seconds from 154 degrees plus 1.04-meter wind waves at 4 seconds keep surfing at 8.2/10, a notch above the 7.7 to 7.9 stretch of recent days, though the period is workmanlike rather than long. Diving holds 7.8/10, same as yesterday, on wind, waves, available clarity, and temperature; marine SST is 27.3 C, about half a degree above average. Atmospheric visibility of 45 kilometers is not underwater visibility. CoastWatch chlorophyll is 0.06 mg/m3 in oligotrophic blue water; that does not speak to fish or wildlife. Wildlife is 6.8/10 from solunar timing, the early low tide, and wind. Fishing is a solid 7.1/10—solunar, tide, a stable 1014 hPa, wind, and available clarity—but cooler than the 8.5 marks earlier in the week when the breeze was lighter. Best windows are the major solunar periods, 05:47–07:47 after the 06:22 sunrise and 17:47–19:47 toward the 18:53 sunset. High water of 0.62 meters arrives at 10:51; the 0.07-meter low already passed at 01:54. Air runs 24.0 to 28.2 C, no rain is indicated, and last-quarter moonlight is 53 percent. Coming days turn wetter, with 80 to 92 percent rain chances through the 8th, and the marine forecast steepens sharply on the 7th and 8th (waves as high as 7.2 then 6.9 meters) before easing by the 9th. Best bet: take the morning swell or a full day under sail, and keep the kayak dry.