CatchWindow fishing intelligence

Astoria, OR Daily Water Report — August 27, 2026

Today is a top-tier day for getting on the water, particularly if you're piloting a boat or strapping on a tank. Boating scores an 8.5 out of 10, and diving isn't far behind at 8.1, thanks to a winning combination of light westerly winds, calm seas, and water temperatures that are running a full degree and a half warmer than the long-term average for late August. The window that matters most is the entire afternoon. Representative wind is holding at just 3 knots from the west, with gusts barely reaching 7. The wave heights are steady around 0.8 meters on a 7.5-second period, and the dominant swell is a modest 0.6-meter groundswell from the southwest. That's clean enough for novice kayakers and experienced divers alike, and the calmest seas—right around 0.78 meters—actually occur near midnight, so an evening paddle under that 98% illuminated waxing gibbous moon could be spectacular. One tradeoff to note: while the marine conditions are near perfect, the air temperature will only climb to about 21°C before falling back sharply after sunset. The foggy morning will lift as the barometer continues its steady rise above 1018 hPa, but the visibility at the surface is only around 13 kilometers. That's not a hazard for boaters, but divers should not confuse that atmospheric figure with underwater clarity—the model simply doesn't provide that distinction. Chlorophyll readings are elevated at nearly 2 mg/m³, which the scoring methodology interprets as favorable for bait, but don't lean on that as a guarantee of what you'll see below the surface. Yesterday's boating score was a 7.8, so we've improved by nearly a full point, and fishing has slipped from yesterday's strong 8.2 down to a still-respectable 6.6—the solunar timing is decent with a major period around midday, but the lack of tide data means that component of the score is essentially neutral. Surfing is a 6.6, so not worth a special trip unless you're local and want an easy session. Looking ahead, Thursday stays pleasant with similar wave heights and slightly warmer air, but by Friday a 54% chance of rain creeps in, and the following Tuesday signals a more meaningful change with waves building to 1.5 meters and a 70% rain chance. The best bet for your week: take advantage of today's glassy afternoon because the ocean won't hand out this many calm, warm conditions in a row again anytime soon.