Highest temperature in Seoul on May 31?

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Market context

On 31 May 2026, the highest temperature recorded at Incheon International Airport Station will fall into one of several defined ranges, measured in degrees Celsius. Resolution depends on historical data from Weather Underground, which archives hourly observations for this Seoul-area weather station. The settlement window closes at 12:00 UTC on that date, meaning traders must account for the full calendar day's readings up to midnight Korean Standard Time.

Seoul's late May climate typically sees daytime highs between 24–28°C, though heat waves occasionally push readings into the low 30s. Historical May 31st records at Incheon show variability: the station has recorded highs ranging from 20°C in cooler years to 31°C during warmer springs. The 0% crowd probability suggests traders currently perceive either extreme confidence in a specific temperature band or insufficient liquidity to establish meaningful odds. Comparable weather markets on this platform have shown that seasonal norms—rather than outlier events—tend to resolve within the middle ranges, though late-spring Korean weather can shift rapidly with monsoon systems or high-pressure ridges moving north from the Pacific.

Traders should monitor Korea Meteorological Administration forecasts released in late May, particularly any alerts regarding early heat waves or unusual atmospheric patterns. The Korea Herald and Yonhapnews regularly publish seasonal weather outlooks. Incheon's coastal location means sea-surface temperatures and typhoon-season precursors can influence May conditions. No regulatory barriers apply to UK-based traders under GlüStV or CFTC jurisdiction for this specific event, and markets under £1,500 notional value typically operate without KYC requirements on most platforms, though individual site policies vary.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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?

On Polymarket KYC UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket KYC UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket KYC UK triggers a quick verification flow that finishes in minutes.

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.