Highest temperature in Seoul on June 12?

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Market context

Seoul's daily maximum temperature on 12 June 2026 will be measured at Incheon International Airport's official weather station and resolved against Wunderground's historical records. The settlement hinges on a single data point: the highest temperature recorded across all times on that calendar date, converted to Celsius for range classification.

June temperatures in Seoul cluster around 23–28°C as seasonal averages, though the city regularly experiences outlier days exceeding 30°C during early summer heat waves. Historical data from comparable years shows that mid-June can produce maxima anywhere from 20°C on cool, rainy days to 32°C during high-pressure systems. The 0% crowd probability suggests traders are either awaiting clearer atmospheric modelling or treating this as a calibration test for seasonal norms rather than an outlier event. Programmatically, this market rewards those who can integrate real-time Korean Meteorological Administration forecasts with Wunderground's lag-adjusted historical records to identify which temperature band carries genuine uncertainty.

Traders monitoring this settlement should track the Korea Meteorological Administration's extended forecasts released 7–10 days prior, which typically show 85% accuracy for daily maxima. Pacific typhoon activity in early June can suppress temperatures significantly, whilst stationary high-pressure ridges over the Korean peninsula drive rapid warming. The Incheon station's elevation and coastal proximity mean sea-breeze effects moderate afternoon peaks compared to central Seoul readings, a technical detail critical for conditional order logic if automating exposure across multiple Seoul weather markets.

Methodology

This page reviews Highest temperature in Seoul on June 12? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Polymarket Bot UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Bot 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.

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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.

What does it cost to trade on Polymarket Bot UK?

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