Current Korea Meteorological Administration guidance points to a daytime maximum of 28–30 °C for Busan on May 18 under a strengthening high-pressure ridge and southerly flow that supports modest warming through clear skies and subsidence. Short-range ensemble models show tight clustering around this range, with 29 °C and 30 °C outcomes nearly tied in trader sentiment because small differences in peak insolation timing or afternoon wind shifts can tip the exact daily high by one degree. This setup exceeds typical mid-May climatology near 21–23 °C at the Gimhae station, reflecting the ridge’s influence on regional heat advection. Traders are watching the next KMA update and global model runs for any adjustments before resolution criteria based on the official station maximum.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Busan on May 18?
29°C 32%
30°C 32%
28°C 15%
31°C 11%
$15,698 Vol.
$15,698 Vol.
22°C or below
<1%
23°C
<1%
24°C
<1%
25°C
<1%
26°C
1%
27°C
2%
28°C
15%
29°C
32%
30°C
32%
31°C
11%
32°C or higher
6%
29°C 32%
30°C 32%
28°C 15%
31°C 11%
$15,698 Vol.
$15,698 Vol.
22°C or below
<1%
23°C
<1%
24°C
<1%
25°C
<1%
26°C
1%
27°C
2%
28°C
15%
29°C
32%
30°C
32%
31°C
11%
32°C or higher
6%
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Gimhae Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/kr/busan/RKPK.
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 to "Yes" until all data for this date has been finalized.
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.
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: May 16, 2026, 12:05 AM ET
Resolution Source
https://www.wunderground.com/history/daily/kr/busan/RKPKThe resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Gimhae Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/kr/busan/RKPK.
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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Resolution Source
https://www.wunderground.com/history/daily/kr/busan/RKPKCurrent Korea Meteorological Administration guidance points to a daytime maximum of 28–30 °C for Busan on May 18 under a strengthening high-pressure ridge and southerly flow that supports modest warming through clear skies and subsidence. Short-range ensemble models show tight clustering around this range, with 29 °C and 30 °C outcomes nearly tied in trader sentiment because small differences in peak insolation timing or afternoon wind shifts can tip the exact daily high by one degree. This setup exceeds typical mid-May climatology near 21–23 °C at the Gimhae station, reflecting the ridge’s influence on regional heat advection. Traders are watching the next KMA update and global model runs for any adjustments before resolution criteria based on the official station maximum.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

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