Official forecasts from the Korea Meteorological Administration project a 33°C maximum for Incheon on August 19 under mostly cloudy skies, yet market-implied odds cluster tightly around 28–30°C because traders anticipate East Asian summer monsoon moisture and scattered convective showers will enhance cloud cover, reduce solar insolation, and limit daytime heating below seasonal norms near 31–32°C. High humidity near 75% combined with light variable winds further suppresses peak temperatures through reduced evaporative cooling and enhanced boundary-layer mixing. Historical analogs show similar late-August setups often produce 1–3°C negative biases relative to clear-sky guidance when precipitation probability exceeds 20–30%. Updated model runs and KMA briefings over the next 48 hours will likely refine these moisture and steering patterns ahead of resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Seoul (Incheon) on August 19?
Highest temperature in Seoul (Incheon) on August 19?
30°C 69%
29°C 37%
28°C 24%
31°C 19%
NEW
NEW
Aug 19, 2026
23°C or below
<1%
24°C
<1%
25°C
3%
26°C
2%
27°C
9%
28°C
24%
29°C
37%
30°C
44%
31°C
12%
32°C
7%
33°C or higher
7%
30°C 69%
29°C 37%
28°C 24%
31°C 19%
NEW
NEW
Aug 19, 2026
23°C or below
$286 Vol.
<1%
24°C
$321 Vol.
<1%
25°C
$0 Vol.
3%
26°C
$0 Vol.
2%
27°C
$20 Vol.
9%
28°C
$3 Vol.
24%
29°C
$0 Vol.
37%
30°C
$18 Vol.
44%
31°C
$24 Vol.
12%
32°C
$1 Vol.
7%
33°C or higher
$0 Vol.
7%
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 19 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Incheon Intl Airport Station, available here: https://www.wunderground.com/history/daily/kr/incheon/RKSI.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Official forecasts from the Korea Meteorological Administration project a 33°C maximum for Incheon on August 19 under mostly cloudy skies, yet market-implied odds cluster tightly around 28–30°C because traders anticipate East Asian summer monsoon moisture and scattered convective showers will enhance cloud cover, reduce solar insolation, and limit daytime heating below seasonal norms near 31–32°C. High humidity near 75% combined with light variable winds further suppresses peak temperatures through reduced evaporative cooling and enhanced boundary-layer mixing. Historical analogs show similar late-August setups often produce 1–3°C negative biases relative to clear-sky guidance when precipitation probability exceeds 20–30%. Updated model runs and KMA briefings over the next 48 hours will likely refine these moisture and steering patterns ahead of resolution.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 19 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Incheon Intl Airport Station, available here: https://www.wunderground.com/history/daily/kr/incheon/RKSI.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 19 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Incheon Intl Airport Station, available here: https://www.wunderground.com/history/daily/kr/incheon/RKSI.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Aug 17, 2026, 12:56 AM ET
Volume
$672End Date
Aug 19, 2026Market Opened
Aug 17, 2026, 12:56 AM ETResolution Source
https://www.wunderground.com/history/daily/kr/incheon/RKSIResolver
0x69c47De9D...This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 19 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Incheon Intl Airport Station, available here: https://www.wunderground.com/history/daily/kr/incheon/RKSI.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Official forecasts from the Korea Meteorological Administration project a 33°C maximum for Incheon on August 19 under mostly cloudy skies, yet market-implied odds cluster tightly around 28–30°C because traders anticipate East Asian summer monsoon moisture and scattered convective showers will enhance cloud cover, reduce solar insolation, and limit daytime heating below seasonal norms near 31–32°C. High humidity near 75% combined with light variable winds further suppresses peak temperatures through reduced evaporative cooling and enhanced boundary-layer mixing. Historical analogs show similar late-August setups often produce 1–3°C negative biases relative to clear-sky guidance when precipitation probability exceeds 20–30%. Updated model runs and KMA briefings over the next 48 hours will likely refine these moisture and steering patterns ahead of resolution.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 19 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Incheon Intl Airport Station, available here: https://www.wunderground.com/history/daily/kr/incheon/RKSI.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 19 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Incheon Intl Airport Station, available here: https://www.wunderground.com/history/daily/kr/incheon/RKSI.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Volume
$672End Date
Aug 19, 2026Market Opened
Aug 17, 2026, 12:56 AM ETResolution Source
https://www.wunderground.com/history/daily/kr/incheon/RKSIResolver
0x69c47De9D...Official forecasts from the Korea Meteorological Administration project a 33°C maximum for Incheon on August 19 under mostly cloudy skies, yet market-implied odds cluster tightly around 28–30°C because traders anticipate East Asian summer monsoon moisture and scattered convective showers will enhance cloud cover, reduce solar insolation, and limit daytime heating below seasonal norms near 31–32°C. High humidity near 75% combined with light variable winds further suppresses peak temperatures through reduced evaporative cooling and enhanced boundary-layer mixing. Historical analogs show similar late-August setups often produce 1–3°C negative biases relative to clear-sky guidance when precipitation probability exceeds 20–30%. Updated model runs and KMA briefings over the next 48 hours will likely refine these moisture and steering patterns ahead of resolution.
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