Clear skies and light southerly winds are expected to promote moderate radiative cooling overnight into August 31, supporting trader focus on an 8–10°C minimum under high-pressure dominance. In Cape Town’s Mediterranean winter climate, the absence of cloud cover and frontal systems allows surface temperatures to drop efficiently after sunset, while dry air and weak winds limit mixing that would otherwise moderate the low. Recent model runs show consistency in daytime highs near 16–18°C but slight divergence on the precise overnight minimum depending on wind speed and any residual moisture. This uncertainty keeps probabilities tightly clustered around 8–10°C, consistent with typical late-August variability where radiative cooling can produce readings 2–4°C below seasonal averages when conditions align.