Current forecasts from regional models and the Hong Kong Observatory consensus point to overnight lows of 26–27 °C on August 27, aligning with the market’s tightly bunched leading outcomes. Persistent southwesterly monsoon flow, elevated humidity near 85–95 %, and widespread convective cloud cover limit nocturnal radiative cooling, keeping minimum temperatures near or slightly above seasonal normals of 26–27 °C. Thunderstorm activity and possible tropical cyclone development in the northern South China Sea—favored by emerging El Niño conditions—could enhance cloudiness and push readings toward 24–25 °C if heavier rain arrives overnight, or allow brief clearing that supports the 27–28 °C range. Official resolution rests on the Observatory’s automatic station reading, with traders weighting the latest model runs and 48-hour guidance most heavily.