The market's near-certain consensus on a 30°C high for Hong Kong on May 31 stems from the Hong Kong Observatory's official daily maximum observation, which aligned precisely with that threshold following several days of extreme heat. An upper-level anticyclone had driven peak readings of 33–34°C earlier in the week, but moderating influences including increased cloud cover, scattered showers, and a shift in steering patterns lowered the afternoon maximum on the 31st. Historical May climatology for the region shows typical highs near 29–30°C, providing context for why traders viewed this outcome as locked in once preliminary data emerged. Only a late revision to the official record or station-specific measurement discrepancy could alter 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 May 31?
Highest temperature in Hong Kong on May 31?
30°C 100.0%
22°C or below <1%
23°C <1%
24°C <1%
$266,570 Vol.
$266,570 Vol.
May 31, 2026
22°C or below
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C
No
30°C
Yes
31°C
No
32°C or higher
No
30°C 100.0%
22°C or below <1%
23°C <1%
24°C <1%
$266,570 Vol.
$266,570 Vol.
May 31, 2026
22°C or below
$2,341 Vol.
No
23°C
$441 Vol.
No
24°C
$1,441 Vol.
No
25°C
$441 Vol.
No
26°C
$1,468 Vol.
No
27°C
$8,737 Vol.
No
28°C
$14,066 Vol.
No
29°C
$61,109 Vol.
No
30°C
$105,486 Vol.
Yes
31°C
$29,072 Vol.
No
32°C or higher
$41,967 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 31 May '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 market's near-certain consensus on a 30°C high for Hong Kong on May 31 stems from the Hong Kong Observatory's official daily maximum observation, which aligned precisely with that threshold following several days of extreme heat. An upper-level anticyclone had driven peak readings of 33–34°C earlier in the week, but moderating influences including increased cloud cover, scattered showers, and a shift in steering patterns lowered the afternoon maximum on the 31st. Historical May climatology for the region shows typical highs near 29–30°C, providing context for why traders viewed this outcome as locked in once preliminary data emerged. Only a late revision to the official record or station-specific measurement discrepancy could alter resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 31 May '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: May 29, 2026, 12:06 AM ET
Volume
$266,570End Date
May 31, 2026Market Opened
May 29, 2026, 12:06 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 31 May '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 market's near-certain consensus on a 30°C high for Hong Kong on May 31 stems from the Hong Kong Observatory's official daily maximum observation, which aligned precisely with that threshold following several days of extreme heat. An upper-level anticyclone had driven peak readings of 33–34°C earlier in the week, but moderating influences including increased cloud cover, scattered showers, and a shift in steering patterns lowered the afternoon maximum on the 31st. Historical May climatology for the region shows typical highs near 29–30°C, providing context for why traders viewed this outcome as locked in once preliminary data emerged. Only a late revision to the official record or station-specific measurement discrepancy could alter resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 31 May '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
$266,570End Date
May 31, 2026Market Opened
May 29, 2026, 12:06 AM ETResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The market's near-certain consensus on a 30°C high for Hong Kong on May 31 stems from the Hong Kong Observatory's official daily maximum observation, which aligned precisely with that threshold following several days of extreme heat. An upper-level anticyclone had driven peak readings of 33–34°C earlier in the week, but moderating influences including increased cloud cover, scattered showers, and a shift in steering patterns lowered the afternoon maximum on the 31st. Historical May climatology for the region shows typical highs near 29–30°C, providing context for why traders viewed this outcome as locked in once preliminary data emerged. Only a late revision to the official record or station-specific measurement discrepancy could alter 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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