Recent numerical weather prediction runs from global and regional models indicate a daily minimum temperature in Cape Town on September 26 most likely between 14–15 °C, driven by persistent southerly flow, elevated humidity, and cloud cover that limits nocturnal radiative cooling. Scattered showers or thunderstorms expected overnight further moderate temperature drops, while daytime mixing keeps values from rising sharply. These conditions contrast with the September climatological minimum near 10 °C, reflecting a warmer-than-average airmass. Trader sentiment remains closely split between sub-10 °C and 20 °C+ outcomes because small forecast shifts in wind strength or timing of clearing could alter the overnight low by several degrees before official observations finalize the market. Updated model guidance and South African Weather Service briefings over the next 12–24 hours will provide the decisive data.