Recent Hong Kong Observatory forecasts and regional model consensus indicate a minimum temperature of 26–27°C on September 22, driven by the gradual advance of the northeast monsoon over southern China, which moderates overnight lows while maintaining high humidity near 80% and light easterly winds. Typical September climatological minima average near 25.8°C, but persistent warm sea-surface temperatures and limited cloud cover overnight support slightly elevated readings, with isolated showers unlikely to produce significant cooling. These conditions position 27°C as the modal outcome in trader assessments, with adjacent 26°C and 28°C values reflecting forecast uncertainty ranges and model spread ahead of final overnight observations.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Hong Kong on September 22?
27°C 43%
26°C 26%
28°C 24%
23°C 13%
22°C or below
2%
23°C
13%
24°C
10%
25°C
7%
26°C
26%
27°C
43%
28°C
24%
29°C
2%
30°C
<1%
31°C
<1%
32°C or higher
<1%
27°C 43%
26°C 26%
28°C 24%
23°C 13%
22°C or below
2%
23°C
13%
24°C
10%
25°C
7%
26°C
26%
27°C
43%
28°C
24%
29°C
2%
30°C
<1%
31°C
<1%
32°C or higher
<1%
The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Min (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 20, 2026, 12:29 AM ET
Resolver
0x69c47De9D...The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Min (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...Recent Hong Kong Observatory forecasts and regional model consensus indicate a minimum temperature of 26–27°C on September 22, driven by the gradual advance of the northeast monsoon over southern China, which moderates overnight lows while maintaining high humidity near 80% and light easterly winds. Typical September climatological minima average near 25.8°C, but persistent warm sea-surface temperatures and limited cloud cover overnight support slightly elevated readings, with isolated showers unlikely to produce significant cooling. These conditions position 27°C as the modal outcome in trader assessments, with adjacent 26°C and 28°C values reflecting forecast uncertainty ranges and model spread ahead of final overnight observations.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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