Official forecasts from the Hong Kong Observatory indicate a minimum temperature near 26°C on September 6 amid weak winds, persistent cloud cover, and scattered showers that limit nocturnal cooling under high humidity. Recent surface observations on September 5 showed overnight lows holding in the mid- to upper-20s Celsius, consistent with early-September climatology where the urban heat island and marine influence keep the diurnal range narrow. Model consensus supports little change through the overnight period, underpinning the market's strong 93.5% implied probability on 25°C. A clearer sky or reduced moisture could allow slightly greater radiative cooling and push the reading to 24°C, while heavier localized rain or a brief wind shift might instead hold the minimum at or above 26°C. Updated HKO guidance and real-time station data on the morning of September 6 remain the key near-term catalysts.
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 6?
25°C 95%
24°C 5.4%
26°C <1%
27°C <1%
$15,863 Vol.
$15,863 Vol.
22°C or below
<1%
23°C
<1%
24°C
5%
25°C
95%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C
<1%
31°C
<1%
32°C or higher
<1%
25°C 95%
24°C 5.4%
26°C <1%
27°C <1%
$15,863 Vol.
$15,863 Vol.
22°C or below
<1%
23°C
<1%
24°C
5%
25°C
95%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
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 4, 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...Official forecasts from the Hong Kong Observatory indicate a minimum temperature near 26°C on September 6 amid weak winds, persistent cloud cover, and scattered showers that limit nocturnal cooling under high humidity. Recent surface observations on September 5 showed overnight lows holding in the mid- to upper-20s Celsius, consistent with early-September climatology where the urban heat island and marine influence keep the diurnal range narrow. Model consensus supports little change through the overnight period, underpinning the market's strong 93.5% implied probability on 25°C. A clearer sky or reduced moisture could allow slightly greater radiative cooling and push the reading to 24°C, while heavier localized rain or a brief wind shift might instead hold the minimum at or above 26°C. Updated HKO guidance and real-time station data on the morning of September 6 remain the key near-term catalysts.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions