توقع: Highest temperature in Seoul (Incheon) on August 1?

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Market context

The highest temperature at Incheon International Airport on 1 August will be set in a day that has opened under a severe heatwave, with the Korea Meteorological Administration already reporting pre-dawn minima of 27.4°C in Seoul and 26.8°C in Incheon, plus “ultra-tropical night” conditions in parts of the north-east and south-east. Reuters said South Korea set a new national heat record of 41.4°C in Yangsan on 31 July, underlining how exceptional the air mass over the peninsula is going into the market’s settlement window.[12][1]

That makes a 0% Yes price on a high-temperature outcome look vulnerable if the airport quickly gets full solar heating and mixing stays weak. Official and weather-service guidance had already pointed to Seoul highs around 34–36°C on 1 August, with Incheon forecast near 34°C, while August climatology for both Seoul and Incheon is closer to the high-20s, so the current conditions are running materially above seasonal norms.[16][18][19][4] The key historical frame is that Korea’s hottest extremes cluster during stagnant, humid heatwaves rather than on average August days, so the market is really a read on whether today follows the same pattern or is capped by marine influence near the coast.[12][4]

For traders, the main catalysts are the Korea Meteorological Administration’s updated short-range forecasts and any shift in cloud cover, sea breeze, or rainfall around western Seoul and Incheon before local afternoon peak heating.[5][11] The airport station is sensitive to wind off the Yellow Sea, so a stronger onshore breeze could restrain the high compared with inland Seoul, whereas clearer skies and continued regional heat would favour a late-day push higher. Morning readings are already elevated, which leaves limited margin for a cool-down if the synoptic setup stays unchanged.[1][16]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

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