CatchWindow fishing intelligence

Cape Town, South Africa Daily Water Report — August 28, 2026

Surfing is the clear winner today, and divers should also take note—but just about everyone else should pick their window carefully. Winds have laid down dramatically compared to recent days, with a representative easterly breeze of just 1 knot and gusts topping out near 9, though a stronger gust near 23 knots is forecast late tonight. That calm stretch through the afternoon and early evening is your golden ticket. The surf window is firing on all cylinders: 1.34-metre waves on an 11.1-second period from a solid south-southwest swell at 174 degrees, with virtually no wind chop. That combination earned an 8.6 suitability score, identical to yesterday’s mark, and the wave height is actually slightly more manageable than the 9.0-rated day two days ago when conditions were similar. For divers, the 8.1 score reflects the same light wind and modest wave action, though the surface visibility reading of 0.14 km refers strictly to atmospheric fog or low cloud, not water clarity. Water temperature sits at 14.1°C, a half-degree below the seasonal average, so a proper wetsuit remains non-negotiable. Fishing earns a solid 7.0, buoyed by the Full Moon overhead and a falling barometer—pressure has dropped from 1018.8 to 1018 hPa and is still trending downward. The solunar major period from 12:14 to 14:14 aligns with that falling pressure, which often coaxes fish into a feeding mood. Kayaking and boating both score above 7.0, thanks to the calmest wave heights of the day near 19:00 and the negligible wind. But sailing drops to 4.6, held back by the same light air that makes motoring more appealing than hoisting canvas. Looking ahead, Friday brings a 90% chance of precipitation and building waves to 2.4 metres, a stark contrast to today’s glassy conditions. Saturday and Sunday see wave heights pushing past two and a half metres with stronger wind, though the precipitation chance drops to near zero. That means today’s calm is a brief interlude—get out before the swell ramps up. Best bet: Ride the glassy morning surf session, then switch to a late-afternoon paddle as the Full Moon rises into a calm harbour.