CatchWindow fishing intelligence

Rainbow Bridge, TX Daily Water Report — August 28, 2026

With a full moon overhead and the calmest water we’ve seen all week, today is a phenomenal day for boating and paddling around Rainbow Bridge, while fishing gets a solid near-perfect nod. The conditions are almost too good to be true—light north winds under five knots, barely a ripple on the surface, and water temperatures sitting at a balmy 30.3°C. This is the kind of late-summer flat calm that makes you want to drop everything and get out there. The real story is the tide sequence. Low tide cleared out early this morning just before 2 AM, and by the time dawn breaks at 6:26, we’ll have a rising tide pushing toward a high around 9:11. That incoming water, combined with the solunar minor period centered on 6:49, creates a textbook early-morning fishing window. Scores hit 8 out of 10, and that’s a step up from yesterday’s 7.3. The water column is rich—chlorophyll numbers are very high at 9.83 mg/m³, indicating a bloom, but remember that speaks to plankton density, not fish location. Use the tidal push and the moon phase to position yourself. For anyone with a kayak or small boat, the numbers are hard to beat. Boating scores 9.6 and kayaking 9.4, the best marks in recent memory. Yesterday’s wind was nearly 9 knots, today’s representative is just 2. The calmest water arrives around 9 PM when waves dip to 0.06 meters, but honestly, the whole day is glassy. Just be aware that gusts spike to over 24 knots at 6 PM, so if you’re out late, keep an eye on the western horizon. Wildlife watchers get a near-perfect 9.2, boosted by that low tide exposure and the moon phase. Shoreline exploring during the mid-afternoon low at 2:22 should reveal plenty. Surfers and divers, however, have a tougher go. The 0.1-meter, 2.9-second waves won’t excite anyone, and the 4.5 surfing score reflects that. Diving at 6.8 is passable but not special, especially compared to yesterday’s 7.6, and the flat surface means getting out is easy, but there’s no current to work with. Looking ahead, the next few days stay hot with highs near 36°C, and winds remain manageable through Sunday before a slight uptick early next week. Rain chances stay low until Tuesday, when they bump to 36%. Water stays flat through the weekend. Best bet: Launch at first light, work the rising tide through the minor feeding period, and you’ll have the whole bay to yourself before the heat sets in.