Recent forecasts from global models such as GFS indicate a maximum temperature near 19–20 °C in Cape Town on September 26, driven by a southerly wind shift and associated frontal moisture that promotes cloud cover, scattered showers, and reduced solar heating. Strong S to SSE winds of 20–25 km/h further limit afternoon warming by enhancing mixing and advecting cooler marine air. This pattern aligns with typical spring transitions in the region, where September climatological highs average 19 °C. Trader emphasis on the 19–21 °C band reflects model consensus on these conditions while acknowledging resolution sensitivity to exact timing of precipitation and any late-day clearing that could nudge the daily maximum slightly higher. Updated runs and local observations will refine the outcome ahead of market close.