Official Hong Kong Observatory forecasts for August 27 project a minimum of 27°C amid persistent southerly flow, high humidity (70-95%), and scattered showers with thunderstorms, limiting nocturnal radiative cooling under mostly cloudy skies. Recent model runs show little change from seasonal norms for late August, when typical overnight lows range 26-28°C, though partial afternoon clearing could allow slightly greater temperature drops if winds ease. Trader consensus clusters tightly around 26-27°C because small variations in cloud cover, rainfall timing, or wind speed—driven by the broad low-pressure trough and distant tropical activity—can shift the daily minimum by 1°C. Updated HKO guidance and regional model outputs over the next 48 hours remain the key near-term catalysts.