CatchWindow fishing intelligence

Marcus Hook, PA Daily Water Report — August 27, 2026

Today delivers an outstanding day for getting on the water, especially if you’ve got a kayak, boat, or dive gear ready. Kayaking scores a 9.1, boating an 8.7, and diving an 8.4—all well into the “go” zone. Fishing and wildlife both sit at a solid 7.2, good but not exceptional. Surfing and sailing lag behind at 4.5 and 4.6, and for good reason: the Delaware Estuary is dead flat this morning. Wave height sits at a measured zero meters across all categories, with no swell and no wind waves. That means the calmest possible surface, which is ideal for a paddle or a cruise but useless for surfers and light-air only for sailors. The best window runs from dawn at 05:57 through early afternoon. Wind holds under 5 knots from the north-northeast through most of the morning, with representative gusts only reaching 7 knots. That’s a featherweight breeze that won't ripple the surface enough to trouble a kayak or small boat. The tradeoff arrives between 13:00 and 18:00, when the forecast shows a rain window and a wind gust spike to 16.3 knots at 09:00. That mid-morning gust is short-lived, but the afternoon rain is worth watching if you plan a long trip—representative precipitation shows zero, but a wet deck is possible. Barometric pressure is falling from 1015 hPa, which often precedes a shift, but nothing alarming today. Compared to recent history, kayaking and boating have been consistently strong. Yesterday’s kayaking score was a 9.5, and boating a 9.6, both slightly higher than today’s, but the difference is marginal. Fishing has bounced around all week—today’s 7.2 is a step up from the 5.8 scores on the 22nd and 23rd, helped by a waxing gibbous moon at 98% illumination and solunar major periods at 11:20 and 23:20. That middle-of-day major lines up with the morning calm, which is your best bet for a fishable window. Visibility is 12.2 kilometers in the air, which is fine for spotting shoreline features but doesn’t tell you anything about underwater clarity. Diving scores are holding steady at 8.4 for the fifth day in a row, helped by flat water and light wind. The water temperature itself is unavailable from our marine sources today, but the SST anomaly is slightly negative at -0.2 degrees versus the seasonal average. The coming days look similar but with a few shifts. Friday and Saturday keep the flat-calm wave profile, with winds picking up Saturday to 10.4 knots and Sunday dropping back to 5.7. Rain chances stay low through Monday, then climb toward midweek. If you want the most glassy, forgiving conditions for the next few days, Friday morning is your ticket—just watch for that weekend breeze to freshen. Best bet: launch before the morning gust and let the falling tide carry you through the solunar peak.