Traders have converged on a 25°C minimum for Hong Kong on August 1 with near-certainty because official forecasts from the Hong Kong Observatory and consensus models indicate overnight lows stabilizing near that threshold under a broad trough of low pressure and southerly flow. Current observations show afternoon readings of 26–27°C with high humidity and scattered showers, consistent with typical early-August climatology where minimums rarely deviate sharply without a strong frontal passage or typhoon influence. Ensemble guidance shows limited spread, reinforcing the 25°C outcome as the most probable resolution. A realistic challenge would require a sharper-than-expected nocturnal radiative cooling event or revised observational data from the Observatory’s network that pushes the daily low below 25°C.