CatchWindow fishing intelligence

Nantucket Island, MA Daily Water Report — October 4, 2026

Nantucket gets a qualified green light today: diving and fishing lead the card, while boating and sailing are workable rather than carefree, and paddlers should treat the current and early gusts with respect. The most useful daylight window is around sunrise through mid-morning. High tide arrives at 7:13 AM, overlapping the 6:30–8:30 AM solunar major period, with light-to-moderate northeast wind and a 0.7–0.9 m sea state. Fishing rates 7.7/10, helped by that timing, the tide progression, and pressure still relatively high despite falling through the day. A second worthwhile fishing and shoreline-exploring stretch develops around the 7:26 PM high tide, coinciding with the 6:30–8:30 PM major period—but rain is forecast from 6 PM onward, so the evening option comes with a wet asterisk. Diving is the day’s strongest scored pursuit at 8.3/10. Marine water temperature is 17.7 C, seas are modest, and winds are generally manageable after the early bump. That said, the 0.83 m/s current toward 237 degrees is not decorative information; it is a real planning factor for entries, exits, and drift management. Atmospheric visibility is forecast near 11.8 km, but that is not a read on underwater visibility. Boating scores 6.7 and sailing 6.8: enough breeze for a productive outing, but not the clean, easygoing setup suggested by the representative 7-knot northeast wind alone. Gusts reach 20.4 knots around 6 AM, cloud cover is complete, and the short 2.4-second wind-wave component can make conditions feel busier than the headline 0.78 m wave height. Kayaking is only 5.6/10, chiefly because current, gust spread, and later rain narrow the margin. Compared with the reconstructed CatchWindow history, fishing improves from 7.1 yesterday and diving edges above yesterday’s 8.1, while sailing eases well below yesterday’s 8.2. Water is cooler than yesterday’s listed 16.5 C only in the air; marine SST is 17.7 C and sits 0.6 C below its average. Monday turns breezier with waves building to 1.2 m; Tuesday remains windy. Wednesday currently looks like the quieter marine break, with waves forecast at 0.3–0.7 m. Best bet: make the sunrise-to-midmorning high-tide window your water time, before the evening rain and the day’s small complications start adding up.