Highest temperature in Seoul (Incheon) on August 3?

Platform comparison

Market context

Seoul’s reading at Incheon International Airport will be judged against a very warm start to August, with official forecasts pointing to a heatwave across the capital area and daytime highs in Seoul around 37°C, while Incheon is forecast nearer 34°C. That gap matters because the market resolves on the airport station, not central Seoul, and coastal influence can keep Incheon a few degrees lower even when the wider region is baking. [1][2]

For a 0% implied chance, the practical question is whether the airport gets anywhere near the top end of the forecast range rather than whether it is simply hot. Comparable August guidance places Seoul’s monthly highs in the mid-30s Fahrenheit-equivalent range, and climatology shows August is the hottest stretch of the year in South Korea, but Incheon usually runs a touch cooler than inland Seoul. In other words, the bar for the highest temperature falling into the upper buckets is materially higher than for a routine summer day. [3][17][18]

Traders should watch whether the current east to easterly flow persists, since the SBS forecast says that pattern will further heat areas west of the mountain ranges, which is the setup most likely to lift Incheon. The other dependency is cloud and shower coverage: KMA-linked reporting points to clear skies for much of the day, but scattered afternoon showers in parts of the south and inland areas could limit broader heat build-up if the pattern shifts. Any late update from the Korea Meteorological Administration on the capital-area heatwave warning, plus the day’s observed progression at neighbouring Seoul, will be the key signals. [1][4][8]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Football-specific comparison page for Highest temperature in Seoul (Incheon) on August 3?. 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 (US-focused) or Manifold (play-money).

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