Highest temperature in Seoul (Incheon) on August 5?

Platform comparison

Market context

Seoul’s heat on 5 August is the real-world event, with the market settling to the day’s high at Incheon International Airport rather than a citywide average. The crowd has this at **0% YES**, which makes the book look like a strong underdog on the face of it, but that also creates a clean contrarian angle if the airport runs even a little hotter than the consensus expects.[1][2]

Historically, early August in Seoul is a hot, humid part of the year, with typical daily highs around the low 30s Celsius and occasional spikes much higher; local August records have reached about 38.2°C, showing that extremes are possible even if they are not the norm.[15][13] That matters because the current forecast mix is split: one mainstream update has Seoul at **38°C** and says the severe heatwave will persist, while other forecast services sit closer to the high 20s or low 30s, implying the market’s consensus leans towards a very hot but not necessarily record-chasing outcome.[1][6][12] In handicapper terms, the favourite is still the heat, but the value may sit in whichever range captures a modest overshoot from already elevated expectations.

Traders should watch the morning-to-afternoon evolution of the local forecast, any rain bands that could cap the maximum temperature, and whether official Korean Meteorological Administration guidance keeps the western region under severe heat warnings.[1][5][11] For an airport station, sea breeze, cloud build-up, and short-lived showers can matter more than the broader Seoul city forecast, so the key dependency is whether conditions stay clear long enough for Incheon to reach the higher bracket. The recent SBS report is the most market-relevant fresh signal here, because it explicitly points to 38°C in Seoul and persistent daytime and overnight heat, which supports the bullish side of the range distribution.[1]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Seoul (Incheon) on August 5? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Who Will Win, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Who Will Win. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.