Skip to main content
icon for Highest temperature in Hong Kong on August 21?

Highest temperature in Hong Kong on August 21?

icon for Highest temperature in Hong Kong on August 21?

Highest temperature in Hong Kong on August 21?

Aug 19

Aug 20

Aug 21

Aug 19

Aug 20

Aug 21

30°C 40%

29°C 25%

31°C 23%

28°C 10%

Polymarket
NEW

30°C 40%

29°C 25%

31°C 23%

28°C 10%

Polymarket
NEW

24°C or below

$508 Vol.

<1%

25°C

$599 Vol.

<1%

26°C

$562 Vol.

1%

27°C

$1,411 Vol.

1%

28°C

$1,343 Vol.

10%

29°C

$477 Vol.

25%

30°C

$227 Vol.

40%

31°C

$214 Vol.

23%

32°C

$221 Vol.

6%

33°C

$138 Vol.

2%

34°C or higher

$253 Vol.

2%

This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 21 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.**Trader consensus on the highest temperature in Hong Kong on August 21 centers on 29–31 °C, reflecting official forecasts from the Hong Kong Observatory and numerical models showing a most likely maximum near 30–31 °C amid showers and cloudy conditions.** Typical August climatology features afternoon highs averaging 32 °C under the influence of the southwest monsoon, yet recent model guidance and current weather patterns indicate increased cloud cover and precipitation that should limit daytime heating. Earlier August heatwave conditions pushed readings above 35 °C, but the approaching period features higher rain probabilities that favor the market-implied peak around 30 °C. Updated forecasts in the next 48 hours from the Observatory and global ensembles will be the key catalysts for any shift in implied probabilities.

This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 21 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.
Volume
$5,953
End Date
Aug 21, 2026
Market Opened
Aug 19, 2026, 12:56 AM ET

Resolver

0x69c47De9D...
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 21 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.
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 21 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.**Trader consensus on the highest temperature in Hong Kong on August 21 centers on 29–31 °C, reflecting official forecasts from the Hong Kong Observatory and numerical models showing a most likely maximum near 30–31 °C amid showers and cloudy conditions.** Typical August climatology features afternoon highs averaging 32 °C under the influence of the southwest monsoon, yet recent model guidance and current weather patterns indicate increased cloud cover and precipitation that should limit daytime heating. Earlier August heatwave conditions pushed readings above 35 °C, but the approaching period features higher rain probabilities that favor the market-implied peak around 30 °C. Updated forecasts in the next 48 hours from the Observatory and global ensembles will be the key catalysts for any shift in implied probabilities.

This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 21 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.
Volume
$5,953
End Date
Aug 21, 2026
Market Opened
Aug 19, 2026, 12:56 AM ET

Resolver

0x69c47De9D...
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 21 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.

Related

icon for Will the highest temperature in Hong Kong be 30°C on August 20?

Will the highest temperature in Hong Kong be 30°C on August 20?

37%
icon for Will the highest temperature in Hong Kong be 32°C on August 19?

Will the highest temperature in Hong Kong be 32°C on August 19?

100%
icon for Will the lowest temperature in Hong Kong be 26°C on August 21?

Will the lowest temperature in Hong Kong be 26°C on August 21?

38%

Beware of external links.

Frequently Asked Questions

"Highest temperature in Hong Kong on August 21?" is a prediction market on Polymarket with 11 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "30°C" at 40%, followed by "29°C" at 25%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 40¢ implies that the market collectively assigns a 40% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"Highest temperature in Hong Kong on August 21?" is a newly created market on Polymarket, launched on Aug 19, 2026. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "Highest temperature in Hong Kong on August 21?," browse the 11 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Highest temperature in Hong Kong on August 21?" is "30°C" at 40%, meaning the market assigns a 40% chance to that outcome. The next closest outcome is "29°C" at 25%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Highest temperature in Hong Kong on August 21?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.