CatchWindow fishing intelligence

Honolulu, HI Daily Water Report — August 28, 2026

This is a day that belongs to surfers and divers, with strong scores that reflect a settled trade-wind regime and a clean south swell. For everyone else, conditions are more of a compromise. The verdict: get in the water early, pick your window carefully, and don't expect glass. The south swell is the headline. At 1.14 meters with a 12-second period, it’s providing consistent, well-organized lines that favor south-facing breaks. The northeast trades are blowing 8 knots, gusting to 17, which creates classic Honolulu texture: a light chop on the surface but a clean, groomed face for anyone riding open-ocean or exposed reef waves. The surfing score of 9.3 out of 10 reflects that alignment. Divers also benefit from those same conditions — manageable wind, reasonable wave heights at 1.38 meters, and water that's 26.8 degrees and running a full degree above the long-term average. There's a caveat: the chlorophyll reading is extremely low, indicating blue, clear water, which is great for visibility, but the representative wave height is still substantial enough that drift dives or entries through the shore break will require awareness of the tide. Low tide at 09:45 drops to just 0.07 meters, making reef access easier but exposing sharp, shallow structure. The best dive window will be mid-morning, after the high tide slack, before the wind cranks up. Boating and kayaking take a hit. The representative wind of 8 knots sounds manageable, but the three-hour average hides a midday gust that hits 28 knots at 14:00. The boating score of 6 out of 10 reflects that reality — the ocean current is pushing 1.1 meters per second toward 252 degrees, which will compound the wind effect for small craft. Kayaking scores just 3.9, which is poor. Paddlers should consider alternative plans; the combination of swell, chop, and current will make for a frustrating, unsafe day on a sit-on-top. Fishing at 7.3 matches yesterday's 7.2. The solunar major period from 11:41 to 13:41 should concentrate activity, especially around the high tide peaking at 16:22. There is no rain forecast and the barometer is steady at 1014 hPa — classic feeding conditions. The full moon means strong tidal exchanges, and the low-low today at 0.06 meters will push fish into predictable channels. Wildlife observers get a 6.6 score, partly because the full moon's minor period from 18:11 to 19:11 aligns with sunset, low light, and dropping tide, which often concentrates birds and shore hunters. Tomorrow looks similar in terms of wave height, but the swell drops slightly, to 0.9–1.0 meters, and the wind peaks a little higher at 12.5 knots. A precipitation chance of 78% suggests cloud cover and possible squalls in the afternoon. Saturday continues the easing trend, with smaller swell and lighter wind — that may be the better bet for general boating or a paddle if today's conditions are too much. Best bet: paddle out at first light before the wind finds its teeth, and you'll have the best of the south swell all to yourself.