CatchWindow fishing intelligence

Seavey Island, ME Daily Water Report — August 27, 2026

Today’s a solid all-around day for getting out on the water around Seavey Island, but you’ll want to pick your window carefully. The morning is the clear winner. Winds start light and stay manageable through late morning, with the calmest wave heights bottoming out near 0.54 meters around 6:00 a.m.—perfect timing for an early paddle or a first-light dive. By afternoon, the southerly breeze kicks up and gusts approach 19 knots, which will put a chop on the surface and make small-boat handling more work than fun. Diving scores the highest at 7.3 out of 10, and the calm early conditions support that. Water temperature is running 19.7 degrees Celsius, which is noticeably warmer than recent days—more than a degree above average for late August. That warmth, combined with the very high chlorophyll reading, suggests plankton blooms are active. That’s worth noting for visibility, though the open-water clarity isn’t measured directly here. Surfing also checks in strong at 7.1, thanks to a clean 0.52-meter swell from 106 degrees with a seven-second period. The southerly wind will eventually mess with the face, so get out early if you want lined-up runners. Boating shares that 7.1 score, and it’s a marked drop from yesterday’s 9.2. Yesterday was glassy, with wind barely over a knot. Today you get a representative five-knot breeze and building afternoon gusts, so it’s still doable—just not the silky-smooth run you just had. Fishing sits at 6.6, supported by a solunar major period from 10:01 to 12:01 and a falling barometer. That’s a decent setup, but without tide data available, you’re missing a key piece of the puzzle. Trust the timing more than the score. Looking ahead, Thursday brings slightly warmer air and a small uptick in rain chance, but waves hold steady in the half-meter range. Friday and Saturday look even calmer, with wave heights dropping toward 0.4 meters and swell tapering off—ideal conditions for kayaking and diving to reclaim higher scores. If you can only pick one morning this week, make it Friday dawn, when the sea will be as flat as it gets.