Recent South African Weather Service and model guidance point to overnight lows in the 9–12°C range for Cape Town on 22 August, driven by a series of mid-August cold fronts that have maintained cooler-than-average conditions along the southwest coast amid typical winter radiative cooling. Clear or partly cloudy skies combined with light winds favor stronger surface cooling, while any increase in onshore flow or marine-layer cloud would moderate minima. Historical August averages near 11°C provide the baseline, but small forecast shifts in high-pressure positioning or frontal remnants can easily separate an 11°C low from 9–10°C or push readings toward 8°C or below. Traders are weighting these subtle model differences heavily, with implied probabilities clustered tightly around 10–12°C.