Trader consensus on Polymarket favors a highest temperature of 28°C in Hong Kong on March 27 at 44% implied probability, reflecting the Hong Kong Observatory's (HKO) latest 9-day forecast projecting daytime highs around 27–29°C amid a ridge of high pressure building over southern China, which typically suppresses cloud cover and allows solar heating to push temperatures upward. Recent observations show March 25 highs reaching 26.8°C with low humidity (55–65%) enhancing daytime warming potential, while ensemble model runs from global forecasts like ECMWF and GFS align on mild intensification risks from light southerly winds carrying warmer maritime air. Historical late-March averages hover at 24–26°C, but this year's El Niño hangover has already delivered several 28°C+ days; uncertainty stems from possible sea breeze moderation or overnight cooling, with HKO's next update due March 26 morning potentially refining land station maxima at King's Park.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Hong Kong on March 27?
Highest temperature in Hong Kong on March 27?
29°C or higher 41.1%
28°C 33%
27°C 22%
26°C 4%
$27,424 Vol.
$27,424 Vol.
19°C or below
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
1%
25°C
1%
26°C
4%
27°C
22%
28°C
38%
29°C or higher
33%
29°C or higher 41.1%
28°C 33%
27°C 22%
26°C 4%
$27,424 Vol.
$27,424 Vol.
19°C or below
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
1%
25°C
1%
26°C
4%
27°C
22%
28°C
38%
29°C or higher
33%
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 to "Yes" until data for this date has been finalized.
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 finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Mar 23, 2026, 6:03 AM ET
Resolver
0x69c47De9D...Resolver
0x69c47De9D...Trader consensus on Polymarket favors a highest temperature of 28°C in Hong Kong on March 27 at 44% implied probability, reflecting the Hong Kong Observatory's (HKO) latest 9-day forecast projecting daytime highs around 27–29°C amid a ridge of high pressure building over southern China, which typically suppresses cloud cover and allows solar heating to push temperatures upward. Recent observations show March 25 highs reaching 26.8°C with low humidity (55–65%) enhancing daytime warming potential, while ensemble model runs from global forecasts like ECMWF and GFS align on mild intensification risks from light southerly winds carrying warmer maritime air. Historical late-March averages hover at 24–26°C, but this year's El Niño hangover has already delivered several 28°C+ days; uncertainty stems from possible sea breeze moderation or overnight cooling, with HKO's next update due March 26 morning potentially refining land station maxima at King's Park.
Experimental AI-generated summary referencing Polymarket data · Updated
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