Official Hong Kong Observatory data confirmed a maximum air temperature of 29°C on August 20 at the reference headquarters station, driving the near-certain market consensus. Persistent cloud cover, elevated humidity near 80%, and scattered thunderstorms associated with a moist northeasterly flow suppressed daytime heating and kept the diurnal range modest, consistent with ensemble model guidance issued days earlier. These conditions contrasted with the mid-month heatwave that produced record readings above 36°C earlier in August. Minor variations in microsite readings or slight forecast revisions could have shifted the outcome into adjacent bins, yet the official verification aligned precisely with the 29°C threshold used for market resolution.
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 August 20?
Highest temperature in Hong Kong on August 20?
29°C 100.0%
27°C or below <1%
28°C <1%
30°C <1%
$300,508 Vol.
$300,508 Vol.
Aug 20, 2026
27°C or below
No
28°C
No
29°C
Yes
30°C
No
31°C
No
32°C
No
33°C
No
34°C
No
35°C
No
36°C
No
37°C or higher
No
29°C 100.0%
27°C or below <1%
28°C <1%
30°C <1%
$300,508 Vol.
$300,508 Vol.
Aug 20, 2026
27°C or below
$7,908 Vol.
No
28°C
$37,963 Vol.
No
29°C
$120,256 Vol.
Yes
30°C
$39,543 Vol.
No
31°C
$34,926 Vol.
No
32°C
$40,380 Vol.
No
33°C
$14,610 Vol.
No
34°C
$3,439 Vol.
No
35°C
$1,156 Vol.
No
36°C
$192 Vol.
No
37°C or higher
$135 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 20 Aug '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
This market can not resolve until data for this date has been published.
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 Hong Kong Observatory data confirmed a maximum air temperature of 29°C on August 20 at the reference headquarters station, driving the near-certain market consensus. Persistent cloud cover, elevated humidity near 80%, and scattered thunderstorms associated with a moist northeasterly flow suppressed daytime heating and kept the diurnal range modest, consistent with ensemble model guidance issued days earlier. These conditions contrasted with the mid-month heatwave that produced record readings above 36°C earlier in August. Minor variations in microsite readings or slight forecast revisions could have shifted the outcome into adjacent bins, yet the official verification aligned precisely with the 29°C threshold used for market resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 20 Aug '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
This market can not resolve until data for this date has been published.
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
This market can not resolve until data for this date has been published.
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: Aug 18, 2026, 12:56 AM ET
Volume
$300,508End Date
Aug 20, 2026Market Opened
Aug 18, 2026, 12:56 AM ETResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 20 Aug '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
This market can not resolve until data for this date has been published.
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 Hong Kong Observatory data confirmed a maximum air temperature of 29°C on August 20 at the reference headquarters station, driving the near-certain market consensus. Persistent cloud cover, elevated humidity near 80%, and scattered thunderstorms associated with a moist northeasterly flow suppressed daytime heating and kept the diurnal range modest, consistent with ensemble model guidance issued days earlier. These conditions contrasted with the mid-month heatwave that produced record readings above 36°C earlier in August. Minor variations in microsite readings or slight forecast revisions could have shifted the outcome into adjacent bins, yet the official verification aligned precisely with the 29°C threshold used for market resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 20 Aug '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
This market can not resolve until data for this date has been published.
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
This market can not resolve until data for this date has been published.
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
$300,508End Date
Aug 20, 2026Market Opened
Aug 18, 2026, 12:56 AM ETResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official Hong Kong Observatory data confirmed a maximum air temperature of 29°C on August 20 at the reference headquarters station, driving the near-certain market consensus. Persistent cloud cover, elevated humidity near 80%, and scattered thunderstorms associated with a moist northeasterly flow suppressed daytime heating and kept the diurnal range modest, consistent with ensemble model guidance issued days earlier. These conditions contrasted with the mid-month heatwave that produced record readings above 36°C earlier in August. Minor variations in microsite readings or slight forecast revisions could have shifted the outcome into adjacent bins, yet the official verification aligned precisely with the 29°C threshold used for market resolution.
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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