Highest temperature in Seoul (Incheon) on August 9?

Platform comparison

Market context

Seoul’s late-summer heat is the core driver here: official and private forecasts point to another hot day, with the Korea Meteorological Administration calling for 34–35°C in the Seoul–Incheon area and advising caution for heat illness, while AccuWeather and Weather Underground-style hourly forecasts show highs in the low-to-mid 30s Celsius with only limited shower risk. That makes a *0% YES* price look detached from the weather setup, because the market only needs the highest reading in the day’s observations at Incheon Intl Airport Station to land inside the relevant temperature band, not to break any record or reach an extreme. [10][2][7]

Comparable midsummer days in Seoul and Incheon often settle close to forecast highs rather than summary “feels like” values, and brief cloud cover or passing showers usually trim only the timing of the peak, not the day’s maximum itself. The key reference for this market is the station observation table, so traders should focus on how warm conditions build through late morning and early afternoon rather than on headline summaries, which the contract explicitly says are not the primary resolution source. [9][10][12]

The main catalysts are the same-day observation sequence and any short-term forecast updates before the settlement window closes. The KMA forecast still flags continued heat and possible afternoon showers, which could cap the top end if clouds arrive earlier than expected, but the current hourly forecasts still show temperatures rising into the upper 20s Celsius by midday and into the low 30s later in the day. If Incheon follows the regional pattern, the decisive move will be whether the airport logs a high near the forecast band or a materially cooler peak because of convective rain or sea-breeze effects. [10][9][3]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Sports-specific comparison page for Highest temperature in Seoul (Incheon) on August 9?. 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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