Official Hong Kong Observatory records confirming a minimum of 28°C on August 17 underpin the 100% market consensus, consistent with subtropical summer climatology where nighttime radiative cooling is limited by high humidity, cloud cover, and the urban heat island effect around the headquarters station. Recent regional conditions, including elevated sea-surface temperatures and light winds, suppressed further drops below this threshold, aligning with seasonal normals near 27°C and the observatory’s ongoing above-normal temperature outlook for August. While measurement revisions or use of an alternate station could theoretically alter resolution, such changes remain improbable given standard verification protocols and the tight clustering of observations.