CatchWindow fishing intelligence

Chatham, MA Daily Water Report — October 7, 2026

Chatham gets a clear green light for boating today, with unusually small seas and light daytime wind making this the best all-around water day on the board. Boating leads at 8.4/10, while diving rates 7.6, kayaking 7.1, sailing 7, fishing 7, and wildlife viewing 7.4. Those are favorable planning signals, not a substitute for local judgment, gear, and conditions at launch. The best broad window runs from dawn through late morning. Sunrise is 6:42 AM, and the 10:00 AM high tide arrives almost exactly as waves bottom out near 0.22 m. Through that stretch, the forecast calls for light WNW wind, generally small 0.2–0.5 m seas, and no rain. The representative sea state is just 0.3 m at 4.9 seconds, with a modest 0.18 m northerly swell. That is a tidy setup for small boats, paddlers and divers, though the 15.3 C water is no longer forgiving of casual exposure. Anglers have a useful overlap from roughly 9:10 to 11:10 AM, during a solunar major period around the morning high. A second major period runs 9:10–11:10 PM, near the 10:22 PM high tide, but that comes with darkness and a forecast gust spike reaching 22 knots around 11 PM. The afternoon low tide at 4:28 PM also lines up closely with the 3:40–4:40 PM solunar minor period, a reasonable shoreline-explorer and wildlife-viewing window if you mind footing and the returning tide. The tradeoff is temperature, not weather: air starts near 6 C with a feels-like value around 4 C before warming substantially, while pressure is falling from around 1018 hPa. Atmospheric visibility is forecast near 18 km under clear skies, but that says nothing about underwater visibility. Current is listed near 0.69 m/s toward 82 degrees, enough to deserve attention from paddlers, divers and anyone timing a crossing. Compared with the reconstructed recent run, today improves on yesterday’s boating score and is calmer in wind, though diving remains below the 8.3–8.5 range seen over the prior week. Thursday and Friday look breezier with 0.4–0.8 m seas; Saturday appears the next comparatively manageable day before wetter, rougher conditions build Sunday into Monday. Best bet: launch early, use the 10 AM high-tide calm, and be off the water before the late-night gusts start acting important.