**Official forecasts from the Hong Kong Observatory point to a maximum of 31°C on September 22 amid a shift from recent clear, high-pressure conditions to increased cloud cover and scattered showers.** On September 20, surface observations reached 33°C+ under dry easterly flow and subsidence, but models indicate moderating influences by midweek, including higher humidity (65–95%) and reduced insolation from convective clouds. This creates tight uncertainty between 29–31°C outcomes, as the exact timing and coverage of showers—driven by a weakening anticyclone and possible trough influence—will determine peak heating. Historical late-September normals hover near 30–31°C, with traders weighing model consensus on boundary-layer mixing and diurnal temperature ranges against the risk of brief clearing allowing brief spikes. Updated HKO briefings and ensemble runs over the next 48 hours remain key resolution catalysts.
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 22?
Highest temperature in Hong Kong on September 22?
31°C 31%
30°C 31%
29°C 16%
32°C 16%
NEW
NEW
Sep 22, 2026
25°C or below
2%
26°C
4%
27°C
4%
28°C
4%
29°C
16%
30°C
31%
31°C
31%
32°C
16%
33°C
4%
34°C
1%
35°C or higher
1%
31°C 31%
30°C 31%
29°C 16%
32°C 16%
NEW
NEW
Sep 22, 2026
25°C or below
$0 Vol.
2%
26°C
$0 Vol.
4%
27°C
$0 Vol.
4%
28°C
$20 Vol.
4%
29°C
$0 Vol.
16%
30°C
$131 Vol.
31%
31°C
$6 Vol.
31%
32°C
$29 Vol.
16%
33°C
$3 Vol.
4%
34°C
$0 Vol.
1%
35°C or higher
$0 Vol.
1%
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 22 Sep '26.
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.**Official forecasts from the Hong Kong Observatory point to a maximum of 31°C on September 22 amid a shift from recent clear, high-pressure conditions to increased cloud cover and scattered showers.** On September 20, surface observations reached 33°C+ under dry easterly flow and subsidence, but models indicate moderating influences by midweek, including higher humidity (65–95%) and reduced insolation from convective clouds. This creates tight uncertainty between 29–31°C outcomes, as the exact timing and coverage of showers—driven by a weakening anticyclone and possible trough influence—will determine peak heating. Historical late-September normals hover near 30–31°C, with traders weighing model consensus on boundary-layer mixing and diurnal temperature ranges against the risk of brief clearing allowing brief spikes. Updated HKO briefings and ensemble runs over the next 48 hours remain key resolution catalysts.
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 22 Sep '26.
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.
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 20, 2026, 12:56 AM ET
Volume
$189End Date
Sep 22, 2026Market Opened
Sep 20, 2026, 12:56 AM ETResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 22 Sep '26.
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.**Official forecasts from the Hong Kong Observatory point to a maximum of 31°C on September 22 amid a shift from recent clear, high-pressure conditions to increased cloud cover and scattered showers.** On September 20, surface observations reached 33°C+ under dry easterly flow and subsidence, but models indicate moderating influences by midweek, including higher humidity (65–95%) and reduced insolation from convective clouds. This creates tight uncertainty between 29–31°C outcomes, as the exact timing and coverage of showers—driven by a weakening anticyclone and possible trough influence—will determine peak heating. Historical late-September normals hover near 30–31°C, with traders weighing model consensus on boundary-layer mixing and diurnal temperature ranges against the risk of brief clearing allowing brief spikes. Updated HKO briefings and ensemble runs over the next 48 hours remain key resolution catalysts.
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 22 Sep '26.
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.
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.
Volume
$189End Date
Sep 22, 2026Market Opened
Sep 20, 2026, 12:56 AM ETResolver
0x69c47De9D...**Official forecasts from the Hong Kong Observatory point to a maximum of 31°C on September 22 amid a shift from recent clear, high-pressure conditions to increased cloud cover and scattered showers.** On September 20, surface observations reached 33°C+ under dry easterly flow and subsidence, but models indicate moderating influences by midweek, including higher humidity (65–95%) and reduced insolation from convective clouds. This creates tight uncertainty between 29–31°C outcomes, as the exact timing and coverage of showers—driven by a weakening anticyclone and possible trough influence—will determine peak heating. Historical late-September normals hover near 30–31°C, with traders weighing model consensus on boundary-layer mixing and diurnal temperature ranges against the risk of brief clearing allowing brief spikes. Updated HKO briefings and ensemble runs over the next 48 hours remain key resolution catalysts.
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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