Highest temperature in Seoul on July 4?

Platform comparison

Market context

Seoul on 4 July 2026 will experience peak summer conditions, with temperatures typically ranging between 25°C and 30°C during the day, occasionally nudging higher under clear skies[3][4]. Historical data shows July is South Korea’s hottest and wettest month, marked by intense monsoon rains and humidity levels above 80%, which can make the “feels like” temperature exceed 34°C[1][3]. In 2025, the country recorded its highest-ever July temperatures, with western cities hitting 40°C, and 22 tropical nights—nights above 25°C—setting a new benchmark for extreme summer heat[2][8].

For traders, the key catalysts are daily weather announcements from the Korea Meteorological Administration and real-time Wunderground data for Incheon Intl Airport Station, which will determine the market resolution[7]. Watch for sudden shifts in monsoon intensity, as short but heavy rainfalls in July can temporarily suppress temperatures, though lingering moisture often raises the “feels like” heat afterward[1][3]. Clear skies following rain, especially in the afternoon, are critical, as they can trigger rapid temperature spikes; traders should monitor hourly forecasts for 60–90 minute rain windows and plan around indoor midday resets to avoid heat fatigue[3]. The settlement window ends 12:00 UTC on 4 July, so all data up to that point will be decisive[1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Sports-specific comparison page for Highest temperature in Seoul on July 4?. 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.

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

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Can I import form data and lineups?

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