Highest temperature in Seoul on July 9?

Platform comparison

Market context

Seoul is entering its peak summer heat phase, with July 9, 2026, falling squarely within the city’s most intense monthly window. Historical data shows daily highs in Seoul during July typically range from 25°C to 30°C, with occasional spikes nudging 30°C or higher, especially when humidity compounds the “feels like” temperature. The average high for July is 26°C (86°F), but recent years have seen record-breaking early-July peaks, including a historic 37.8°C recorded on July 8 in a prior year, underscoring the volatility of this period.

Current market-implied probability of 0% for temperatures hitting a specific threshold suggests traders are betting against a significant heat spike, yet historical precedents contradict such certainty. In 2025, South Korea experienced its second-hottest July since 1973, averaging 27.1°C, while Hongcheon set an all-time national record of 41.0°C. Traders on Lines.com estimate a 34.5% chance of exactly 26°C, indicating the market is not dismissing moderate heat entirely. This divergence between current pricing and historical extremes frames the 0% probability as potentially misaligned with Seoul’s documented heat volatility.

Traders should monitor real-time updates from Wunderground for the Incheon Intl Airport Station, as resolution depends on the highest temperature recorded at that specific site. Key catalysts include sudden shifts in monsoon patterns, which can bring intense but brief rain windows, temporarily cooling temperatures. Additionally, watch for official announcements from the Korea Meteorological Administration regarding heat advisories or tropical night records, as July 2026 has already seen the longest stretch of tropical nights in Seoul for 117 years, a factor that could sustain elevated temperatures through the night and into the following day.

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Methodology

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

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

When do sports markets resolve?

Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.

Can I bet on individual matches?

Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.

What are live sports odds on Polymarket?

Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.

Which sports markets are available?

Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.

How fast do sports winnings settle?

Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.