Official observations from the Hong Kong Observatory recorded a daily maximum of 32°C on September 5, aligning with the near-certain market consensus on that outcome. Persistent subtropical high pressure, light winds, and limited cloud cover under typical late-summer conditions allowed surface temperatures to climb steadily through the afternoon, consistent with climatological norms for early September when mean highs often reach 30–31°C. Model guidance and nearby station data showed no significant deviations that would support a higher or lower peak. Revised quality-controlled readings or use of an alternate reference station remain the only realistic paths to a different resolution, though historical practice favors the primary Observatory value.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Hong Kong on September 5?
32°C 99.9%
33°C <1%
24°C or below <1%
25°C <1%
$123,985 Vol.
$123,985 Vol.
24°C or below
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C
<1%
31°C
<1%
32°C
100%
33°C
<1%
34°C or higher
<1%
32°C 99.9%
33°C <1%
24°C or below <1%
25°C <1%
$123,985 Vol.
$123,985 Vol.
24°C or below
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C
<1%
31°C
<1%
32°C
100%
33°C
<1%
34°C or higher
<1%
The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Max (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm
In the event that there is no data for the observation date by 11:59 PM ET on the seventh day following the observation date, this market will resolve to the lowest bracket.
This market will resolve once data for this date has been published on the resolution source, or by 11:59 PM ET on the seventh day following the observation date, whichever comes first.
The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is initially published for this market's timeframe will not be considered for this market's resolution.
Market Opened: Sep 3, 2026, 12:56 AM ET
Resolver
0x69c47De9D...The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Max (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm
In the event that there is no data for the observation date by 11:59 PM ET on the seventh day following the observation date, this market will resolve to the lowest bracket.
This market will resolve once data for this date has been published on the resolution source, or by 11:59 PM ET on the seventh day following the observation date, whichever comes first.
The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is initially published for this market's timeframe will not be considered for this market's resolution.
Resolver
0x69c47De9D...Official observations from the Hong Kong Observatory recorded a daily maximum of 32°C on September 5, aligning with the near-certain market consensus on that outcome. Persistent subtropical high pressure, light winds, and limited cloud cover under typical late-summer conditions allowed surface temperatures to climb steadily through the afternoon, consistent with climatological norms for early September when mean highs often reach 30–31°C. Model guidance and nearby station data showed no significant deviations that would support a higher or lower peak. Revised quality-controlled readings or use of an alternate reference station remain the only realistic paths to a different resolution, though historical practice favors the primary Observatory value.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

Beware of external links.
Beware of external links.
Frequently Asked Questions