Hong Kong's July minimum temperatures typically range 26–28°C amid high humidity and urban heat island effects that limit overnight radiative cooling. The Hong Kong Observatory's seasonal outlook calls for normal to above-normal temperatures through September 2026, consistent with long-term warming trends and current ENSO-neutral conditions. For July 21 specifically, forecast guidance points to overnight lows near 27°C under typical monsoon flow, though increased cloud cover or light winds could hold readings at 28°C or higher, while clearer skies might allow brief dips to 26°C. Trader sentiment remains split among these outcomes because short-term model runs show modest variability in boundary-layer moisture and wind patterns two days out, with limited tropical cyclone influence expected in the immediate window.
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 July 21?
26°C 100.0%
22°C or below <1%
23°C <1%
24°C <1%
$41,227 Vol.
$41,227 Vol.
22°C or below
No
23°C
No
24°C
No
25°C
No
26°C
Yes
27°C
No
28°C
No
29°C
No
30°C
No
31°C
No
32°C or higher
No
26°C 100.0%
22°C or below <1%
23°C <1%
24°C <1%
$41,227 Vol.
$41,227 Vol.
22°C or below
No
23°C
No
24°C
No
25°C
No
26°C
Yes
27°C
No
28°C
No
29°C
No
30°C
No
31°C
No
32°C or higher
No
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
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: Jul 19, 2026, 12:30 AM ET
Resolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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
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.
Resolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Hong Kong's July minimum temperatures typically range 26–28°C amid high humidity and urban heat island effects that limit overnight radiative cooling. The Hong Kong Observatory's seasonal outlook calls for normal to above-normal temperatures through September 2026, consistent with long-term warming trends and current ENSO-neutral conditions. For July 21 specifically, forecast guidance points to overnight lows near 27°C under typical monsoon flow, though increased cloud cover or light winds could hold readings at 28°C or higher, while clearer skies might allow brief dips to 26°C. Trader sentiment remains split among these outcomes because short-term model runs show modest variability in boundary-layer moisture and wind patterns two days out, with limited tropical cyclone influence expected in the immediate window.
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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