CatchWindow fishing intelligence

Hilo, Hilo Bay, Kuhio Bay, HI Daily Water Report — October 5, 2026

Hilo Bay is workable rather than wide-open today: fishing, kayaking and boating rate as the better-supported choices, while divers face a noticeable step down from the excellent scores of the past several days. The useful daylight window starts after dawn and runs through the late morning high tide at 11:56 AM. Winds are light from the northwest, generally 3.8 to 6.9 knots, though gusts could reach 16.1 knots around 11 AM. That makes the morning the cleaner bet for small craft before the gustier stretch arrives. Boating scores 6.9/10 and kayaking 7/10, with a modest current of about 0.08 m/s toward the northwest, but the 1.3 to 1.6 m sea state is the limiting ingredient—not the breeze. Waves sit near 1.52 m with a short 7.25-second period, driven largely by a 1.26 m easterly swell at 5.5 seconds. That is enough motion to keep launches, landings and exposed water from becoming casual. Fishing earns 7.2/10, with the strongest timing around the 7:22-9:22 AM solunar major period, overlapping a rising tide. A second major period arrives 7:22-9:22 PM, after the 6:54 PM low, though it falls after sunset. Pressure is falling from around 1015 hPa, and rain is possible through 5 PM, so keep the plan flexible rather than treating a dry-looking moment as a guarantee. Diving scores 6.7/10, down from 8.6 yesterday and 8.7-8.8 earlier in the week. Water remains warm at 26.7 C, but wave energy and available clarity data weigh more heavily today. Atmospheric visibility is only 1.32 km under heavy cloud and rain potential; that is not a measure of underwater visibility. Wildlife leads the board at 8.2/10, especially near the morning major period and the evening low-tide cycle. Conditions ease a little Tuesday and Wednesday, with waves near 1.2-1.3 m, before building again toward 1.5-1.8 m Saturday. Best bet: fish the rising-tide morning window, then let the late-morning gusts and short-period swell have the last word.