CatchWindow fishing intelligence

Port Isabel, TX Daily Water Report — October 4, 2026

Port Isabel gets a qualified green light today: excellent sailing and diving scores lead the board, while anglers, boaters, paddlers, and shoreline explorers have usable windows if they respect a building NNW breeze and the long slide toward this afternoon’s low tide. The most comfortable all-around stretch is early, from dawn through roughly midmorning. Winds are lighter at the start of the day before the representative 15-knot NNW flow takes over, with gusts near 20 knots and a daily maximum gust forecast at 22 knots overnight. The 7:24–9:24 AM solunar major period overlaps daylight and comes shortly after the 2:49 AM high tide, giving fishing its best timing of the day; the fishing score is 6.8/10, helped by rising pressure but moderated by wind. The 7:00 AM dawn also gives shoreline explorers a cooler, lower-light start before the day settles into thick cloud cover. Sailing earns an 8.6/10, matching yesterday’s strong mark, with enough breeze to make the day interesting rather than idle. Waves are modest but not flat: about 0.62 m at 5 seconds, ranging 0.6–0.9 m, with the calmest water near 3 PM at 0.58 m. That afternoon lull is the better compromise for boating and kayaking, though neither score—6.6 and 6.4—should be read as a safety guarantee. The current is forecast toward 198 degrees at roughly 0.17 m/s, and wind plus short-period chop can make exposed water feel busier than the wave height suggests. Diving rates 8.8/10, the day’s top score, with very warm 30.1 C marine SST and manageable seas. That said, atmospheric visibility of 13.1 km is not an underwater-visibility reading, and the overcast sky offers no promise about what conditions look like below the surface. Chlorophyll is moderate at 0.57 mg/m³, a normal coastal productivity reading, not a wildlife or fishing forecast. Compared with the recent CatchWindow record, today is windier than the last several days and boating has slipped from yesterday’s 8.3, while sailing remains steady. Pressure is rising near 1014 hPa. Monday and Tuesday look breezier with rain chances of 62% and 80%; Wednesday offers lighter peak wind, before seas build toward 0.9–1.2 m Friday. Best bet: sail early, fish the morning major period, and let the afternoon’s lower waves—not the clock alone—decide whether to launch.