Trader consensus clusters around 20–22°C for Cape Town’s August 4 maximum because short-range model guidance shows typical winter variability from the timing and strength of an approaching cold front. In Cape Town’s Mediterranean winter regime, westerly winds and Atlantic lows often bring increased cloud cover and onshore flow that limits solar heating and caps highs near or below the 17°C seasonal average, while clearer intervals or offshore berg winds allow modest warming. Ensemble spreads remain wide this far ahead of the event, reflecting divergence in predicted frontal speed and marine layer depth, which keeps implied probabilities distributed across the 19–22°C range rather than concentrating on a single outcome.