CatchWindow fishing intelligence

Port San Luis, CA Daily Water Report — September 3, 2026

Surfing is the call at Port San Luis today: a 9 out of 10 that edges yesterday’s already strong 8.8 and sits clearly above the rest of the board. Diving and wildlife both land at 8, fishing at 7.9, boating and kayaking in the workable 6s, and sailing a muted 5.1 under a lid of cloud and a light, inconsistent breeze. Those are suitability scores, not safety declarations. The surf number is coming from period more than size. Marine forecast energy sits near 1.18 meters at about 11 seconds, with swell around 0.72 meters at 10.7 seconds from 234 degrees and almost no wind sea on top. Representative wind is only 4 knots from the northwest, gusting to 10, which helps keep the face relatively clean. Daytime wave heights stay in a tight 0.9-to-1.2-meter band; the day’s minimum, 0.88 meters, is overnight near midnight, so the useful energy is the midday swell, not the calmest hour. The tradeoff is a fully overcast sky—cloud cover at 100 percent, UV at zero—humid air near 17 degrees Celsius, and a 12.2-kilometer atmospheric visibility that says nothing about what you will see underwater. Fishing’s 7.9 leans on solunar timing, falling pressure near 1013 hPa, and that light wind. Major periods run 05:04–07:04 around the 06:37 sunrise and 17:04–19:04 toward the 19:30 sunset, with a minor pulse at midday. Tide data is unavailable, so that piece of the picture is simply missing. Marine water is 16.7 degrees, about 1.3 degrees above average. A 0.6-meter-per-second current setting toward 198 degrees is the other moving part for boats and kayaks, and a 20-knot gust is forecast around 20:00—after sunset, but enough to sour a late run. No rain is indicated. Through the weekend the marine forecast builds waves toward 1.5–1.8 meters by the 6th and 7th before they ease, with peak winds staying near 8 to 11 knots and only a modest rain chance arriving the 8th. Best bet: take the overcast, long-period morning and ride what you’ve got before the swell fills in.