**Trader sentiment for Hong Kong’s August 26 minimum temperature centers on the Hong Kong Observatory’s official 27–31 °C range, with the lower bound anchoring the leading 27 °C outcome at 41 % implied probability.** Persistent south to southwesterly flow (force 4–5, occasionally 6 offshore) continues to advect warm, moist maritime air across the Pearl River Delta, sustaining high humidity (75–95 %) and widespread cloud cover that limits nocturnal radiative cooling. Occasional showers and squally thunderstorms—expected to be locally heavy—introduce modest evaporative cooling but are unlikely to drop the minimum below 26 °C under current steering patterns. Model consensus and climatological analogs for late-August monsoon conditions support a most-probable overnight low of 27 °C, with a secondary cluster at 28 °C reflecting uncertainty in exact timing and intensity of convective activity. Lower probabilities assigned to 26 °C or 29 °C capture tail risks: stronger localized downbursts or a brief clearing window that could respectively nudge the minimum a degree cooler or warmer. With resolution hinging on the Observatory’s verified daily minimum, traders are weighting the latest numerical guidance and regional model runs released ahead of the 26 August land–sea breeze transition.