CatchWindow fishing intelligence

Portland, ME Daily Water Report — October 5, 2026

Portland gets a clear green light for small-craft time early, with kayaking the standout at 8.9/10 and boating close behind at 8.5/10. The catch is timing: this is a calm-water day that turns more argumentative around evening, so make the quiet hours count. Morning offers the best all-around window. Winds are light from the WNW around the representative reading of 3 knots, seas sit near 0.6 m with a short 6.15-second period, and no rain is indicated. High tide arrives at 6:58 AM, followed by a useful overlap of daylight and the 7:28–9:28 AM solunar major period. That combination supports the day’s 6.6/10 fishing estimate, while the low wind and modest current—about 0.08 m/s toward 315 degrees—favor paddlers and boaters. The water is still cool at a marine SST of 14.9 C, despite running 0.9 C above average, so immersion protection and a conservative margin remain sensible. Diving rates 6.9/10: manageable surface conditions help, but 100% cloud cover and very high chlorophyll readings mean atmospheric visibility of 12.3 km should not be mistaken for underwater clarity. The chlorophyll value signals bloom conditions; it does not say what is happening below the surface at any particular site. By afternoon, the tide falls to 0.37 m at 12:54 PM, then rises toward the 7:17 PM high. That evening high coincides closely with the 7:28–9:28 PM solunar major period, but it also coincides with the day’s sharpest deterioration: gusts are forecast to reach 29 knots around 7 PM, despite a generally light representative wind. That gust spread is the reason sailing is only 5.2/10 and why late-day open-water plans deserve a shorter leash. Waves may reach 0.9 m during the day, versus the calmest 0.46 m near midnight. Compared with the recent CatchWindow record, boating, fishing, diving, sailing, and wildlife scores all ease from October 4, while kayaking improves slightly. Pressure is falling from a 1014 hPa representative value, another reason not to treat the pleasant early surface as a promise for the whole day. Tuesday through Thursday look generally dry with peak winds below 14 knots and waves mostly 0.2–0.7 m; Friday and Saturday appear especially low-wave, though precipitation chances rise to 21%. Best bet: launch after dawn, use the morning high-tide slackness and light breeze, and be back in before the evening gusts start throwing their weight around.