CatchWindow fishing intelligence

Boston, MA Daily Water Report — October 4, 2026

Boston gets a clear green light for small-craft time today, with kayaking the standout at 8.8/10 and boating close behind at 8.5/10. The water is modest, winds are light, and no rain is indicated—an unusually cooperative October setup, even if the sky looks determined to keep the sun to itself. The best all-around window is early, from dawn through the morning high-water turn. Dawn begins at 6:16 AM, sunrise is 6:44 AM, and the 5:57 AM high tide is followed by a long ebb toward the 11:57 AM low. ENE winds are generally light, with a representative 4 knots and a day range of roughly 1 to 9 knots. Waves run 0.3 to 0.5 m, with a representative 0.44 m at a short 4.7 seconds—small, but not glassy in every exposed patch. The strongest gusts, up to 13.2 knots, are forecast around 11 AM, making the late-morning low-tide period the day’s main tradeoff for paddlers and open-boat crews. Fishing rates 7.4/10, helped by the 6:34–8:34 AM solunar major period and another from 6:34–8:34 PM, which overlaps the 6:13 PM high tide. The evening option is especially tidy: arrive before sunset at 6:24 PM, then expect dusk through 6:52 PM. Pressure is falling from a high near 1028 hPa, while the water remains relatively mild at 16.6–17 C, about 0.9 C above average. Diving scores 7.3/10, but treat that as a conditions estimate rather than a promise of underwater visibility. The sea state is manageable; water temperature still deserves proper exposure protection. Atmospheric visibility is forecast near 17.8 km, though that says nothing about what lies below the surface. Chlorophyll is very high, indicating bloom conditions, another reason not to assume clear water. Compared with the recent run, boating eases slightly from yesterday’s 9/10 while fishing improves sharply from 6.2/10; sailing slips to 5.3/10 because light wind is pleasant for drifting, not for making a sailboat earn its keep. Monday turns breezier with waves building to 0.4–0.6 m, then the sea steadily settles through midweek, reaching 0.1–0.3 m Tuesday through Friday. Best bet: launch early, fish the morning major period, and be back in before the late-morning gusts start acting important.