CatchWindow fishing intelligence

Sitka, AK Daily Water Report — August 27, 2026

Boating and kayaking are the clear winners today—this is a rare late-August gift for anyone who wants to get out on Sitka Sound without fighting the wind or a washing machine sea. The numbers are unmistakable: boating scores an 8.6, kayaking an 8.4, and the reason is sitting right there in the wind and wave data. Representative wind is a mere 2 knots from the north-northwest, and while gusts touch 9 knots around 5 p.m., the overall range stays below 6 knots all day. Waves hold steady at half a meter to 0.6 meters, with the calmest period near midnight at 0.5 meters. That means the morning and early afternoon are borderline glassy by Southeast Alaska standards. The ocean current is mild at 0.4 m/s pushing northeast, so drift is manageable for paddlers and small craft alike. Fishing scores a 6, which is decent but not exceptional. The solunar picture is not strongly supportive—major periods fall at 11:29 a.m. and late at night, minor windows around 6 a.m. and 6 p.m.—and while the waxing gibbous moon is nearly full, its illumination doesn't align with prime feeding windows here. Pressure is rising slowly from 1012.6 to 1014.9 hPa, which can signal improving stability but also often correlates with a lull in feeding activity before a front. The real wild card is chlorophyll: 7.12 mg/m³ is very high, indicating a bloom. That means the water is thick with plankton, which concentrate bait, but it also means underwater visibility is likely poor—divers should expect murky conditions despite the calm surface. Diving scores a 6.9, and that's probably generous given the bloom haze. Surfing at 5.8 is a hard pass. The swell is 0.48 meters from 258 degrees at a short 4.8-second period, which won't produce rideable waves on any Sitka break. Wind waves are negligible. Wildlife watching scores a 7.2, and with the bloom likely drawing krill and small fish near the surface, you might see more bird activity than usual in the inner sound. Keep a pair of binoculars handy. Compared to typical late August, the standout feature here is the wind. Most years you'd be looking at 10- to 15-knot afternoon breezes in Sitka Sound, not 2 knots. The sea surface temperature is 14.5°C, which is 1.3 degrees above the historical average for this date—that's a measurable anomaly that could keep some fish species shallower than expected. No prior reports exist for this date, so we're flying without a baseline, but the data suggests a quiet, warm, bloom-heavy day. Looking ahead: Thursday stays workable with similar wave heights but slightly more wind at 5.2 knots. Friday brings a 100 percent chance of rain and waves building to 1.3 meters by evening—that's when the window closes. Saturday and Sunday look lumpy with persistent precipitation. If you have a boat or a kayak, use today. By Monday, waves could hit 1.4 meters and winds push 9.4 knots, so this calm is not sticking around. Best bet: Launch before 10 a.m