Highest temperature in Seoul (Incheon) on August 1?

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Market context

South Korea is in the grip of a severe late-July heatwave, and early readings already show Incheon running very warm at the start of August. At 5 a.m. local time, Incheon was 27.0°C, while the nationwide temperature picture remained elevated, with Seoul at 27.5°C and several inland and southern cities still in the high 20s or low 30s before sunrise.[3]

A 0% crowd-implied chance of the top band reflects how unusual the target is for Incheon, but the recent heat has already broken the usual summer frame. The Korea Meteorological Administration said South Korea posted a new national high of 41.4°C in Yangsan on 31 July, the country’s hottest reading since modern records began in 1973, and reported morning lows above 26°C in both Seoul and Incheon on 1 August.[6][1] By comparison, August climate normals for Incheon sit around the high 20s rather than anything near the upper 30s, so the market depends on whether the current heat dome sustains into the afternoon.[18][19]

For traders, the key catalysts are the day’s official KMA updates, especially cloud cover, wind off the Yellow Sea, and whether the heat peaks before the settlement window closes at noon UTC. The current setup in the forecasts points to continued intense warmth across the capital area, with Seoul expected to reach the mid-30s and Incheon around 34°C on 1 August, which would be enough to make the upper ranges live if the airport station follows the broader regional pattern.[16][4]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Sports-specific comparison page for Highest temperature in Seoul (Incheon) on August 1?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.

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