Highest temperature in Seoul on June 16?

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Market context

The highest temperature recorded at Incheon International Airport on 16 June 2026 will determine the settlement range for this market. Seoul's mid-June weather typically sits in the warm-to-hot range, with average highs around 27–28°C, though daily variation and occasional heat waves can push readings considerably higher. The airport station provides the official measurement point, and historical data from Wunderground shows that Seoul regularly experiences temperatures in the low-to-mid 30s Celsius during June when atmospheric conditions favour heat accumulation.

Historical June records for the Seoul metropolitan area reveal that temperatures exceeding 30°C occur in roughly 60–70% of years during this month, with peaks sometimes reaching 33–35°C during stronger warm spells. The 0% crowd probability currently assigned suggests traders may be anchoring to unusually cool scenarios or treating the market with caution pending clearer seasonal forecasting. Comparable years show that mid-June sits before the peak summer heat but well into the warm season, making sub-25°C outcomes distinctly unlikely based on climatological norms.

The key variable for traders will be the specific weather pattern establishing itself in early June 2026. North Pacific high-pressure systems, monsoon moisture timing, and any lingering cold fronts will shape whether temperatures trend toward seasonal averages or break into the upper-30s range. Long-range forecasts become more reliable from late May onwards; traders should monitor meteorological agency updates from the Korea Meteorological Administration and international weather models as June approaches to assess whether anomalous conditions are developing.

Methodology

We track Highest temperature in Seoul on June 16? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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 Sport Prediction, 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?

Sport Prediction 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 does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

Do I need to KYC for this market?

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