CatchWindow fishing intelligence

Hilo, Hilo Bay, Kuhio Bay, HI Daily Water Report — October 8, 2026

Hilo Bay is a good go for boating, paddling and diving today, with a firm asterisk for the afternoon gusts and the steady 1.4–1.7 m sea. Diving leads the board at 8.7/10, while boating rates 8.1 and kayaking 7.7; those are favorable conditions, not a substitute for site-specific judgment. The cleanest practical window is early, from dawn through late morning. Winds are generally light around the representative 3 knots from the southwest, and the day’s calmest wave height—still 1.4 m—occurs near midnight before seas hold in that same moderate range. Water is warm at 26.6 C, 0.4 C above average, with a 0.98 m northwest swell at 10.55 seconds and short wind waves around 0.46 m. That combination can be manageable but not glassy, especially where swell exposure matters. Atmospheric visibility is about 5.14 km; it should not be read as an underwater-visibility forecast. For anglers, the 5.7/10 score says workable rather than electric. The stronger solunar window runs 9:49–11:49 AM, overlapping the rise toward the 1:42 PM high tide of 0.76 m. A second major period arrives 9:49–11:49 PM, after the evening low of 0.03 m at 7:59 PM. Pressure is rising from a relatively low 1009 hPa, but the afternoon is the tradeoff: gusts are forecast to reach 29.4 knots around 3 PM, with a brief rain window also flagged then. Keep the small-craft plan conservative once the breeze starts showing teeth. Sailing is a middling 5.8/10: enough variability to keep it interesting, but the gust spread is the part that deserves respect. Wildlife scores 7.4/10, with low-tide proximity and the late-afternoon minor solunar period from 4:19–5:19 PM offering the better timing. Compared with the reconstructed recent CatchWindow record, diving rebounds from 6.9 yesterday to 8.7, while boating holds steady at 8.1; fishing is slightly softer than yesterday’s 5.8. Friday looks lighter in wind with 1.3–1.5 m waves, though rain chances rise; Saturday stays wet-looking and a touch lumpier. Best bet: launch early, be off the exposed water before the 3 PM gust lottery begins.