Skip to main content

To trade in the US, go to polymarket.us

icon for Highest temperature in Hong Kong on September 18?

Highest temperature in Hong Kong on September 18?

icon for Highest temperature in Hong Kong on September 18?

Highest temperature in Hong Kong on September 18?

Sep 16

Sep 17

Sep 18

Sep 16

Sep 17

Sep 18

31°C 37%

32°C 36%

30°C 15%

33°C 14%

Polymarket
NEW

31°C 37%

32°C 36%

30°C 15%

33°C 14%

Polymarket
NEW

25°C or below

$379 Vol.

<1%

26°C

$113 Vol.

1%

27°C

$76 Vol.

1%

28°C

$5 Vol.

1%

29°C

$0 Vol.

7%

30°C

$0 Vol.

15%

31°C

$101 Vol.

37%

32°C

$590 Vol.

36%

33°C

$203 Vol.

14%

34°C

$201 Vol.

4%

35°C or higher

$0 Vol.

<1%

This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 18 Sep '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 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.Official Hong Kong Observatory forecasts for September 18 point to a maximum of 31–32°C under fine, dry conditions influenced by a fresh northeast monsoon and anticyclone aloft, with easterly winds of force 4 occasionally 5 and low rainfall probability. This setup favors strong daytime solar heating yet limits extremes through moderate ventilation and reduced humidity. Trader sentiment splits closely between 31°C and 32°C because small variations in cloud timing, wind gusts, or localized urban heating can shift the peak by 1°C within the official 27–32°C range. Upcoming model updates and real-time observations will refine the exact maximum before resolution.

This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 18 Sep '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

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.This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 18 Sep '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 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.
Volume
$1,669
End Date
Sep 18, 2026
Market Opened
Sep 16, 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 18 Sep '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 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.Official Hong Kong Observatory forecasts for September 18 point to a maximum of 31–32°C under fine, dry conditions influenced by a fresh northeast monsoon and anticyclone aloft, with easterly winds of force 4 occasionally 5 and low rainfall probability. This setup favors strong daytime solar heating yet limits extremes through moderate ventilation and reduced humidity. Trader sentiment splits closely between 31°C and 32°C because small variations in cloud timing, wind gusts, or localized urban heating can shift the peak by 1°C within the official 27–32°C range. Upcoming model updates and real-time observations will refine the exact maximum before resolution.

This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 18 Sep '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

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.This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 18 Sep '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 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.
Volume
$1,669
End Date
Sep 18, 2026
Market Opened
Sep 16, 2026, 12:56 AM ET

Resolver

0x69c47De9D...

Related

icon for Will the highest temperature in Hong Kong be 31°C on September 17?

Will the highest temperature in Hong Kong be 31°C on September 17?

46%
icon for Will the lowest temperature in Hong Kong be 27°C on September 18?

Will the lowest temperature in Hong Kong be 27°C on September 18?

41%
icon for Will the highest temperature in Hong Kong be 31°C on September 16?

Will the highest temperature in Hong Kong be 31°C on September 16?

100%

Beware of external links.

Frequently Asked Questions

"Highest temperature in Hong Kong on September 18?" 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 "31°C" at 37%, followed by "32°C" at 36%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 37¢ implies that the market collectively assigns a 37% 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 September 18?" is a newly created market on Polymarket, launched on Sep 16, 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 September 18?," 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 September 18?" is "31°C" at 37%, meaning the market assigns a 37% chance to that outcome. The next closest outcome is "32°C" at 36%. 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 September 18?" 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.