Highest temperature in Seoul on June 9?

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Market context

Seoul's peak temperature on 9 June 2026 will be measured at Incheon International Airport Station, the official weather observation point for the metropolitan region. The settlement mechanism relies on Wunderground's historical weather database, which aggregates hourly readings throughout the day and reports the single highest value recorded. For programmatic traders, this creates a straightforward data dependency: the market resolves once Wunderground publishes its daily summary for that station, typically available by late afternoon Seoul time on 10 June.

Early June temperatures in Seoul historically cluster between 24–28°C, with occasional peaks reaching 30°C during anomalous warm spells. The 0% crowd probability suggests traders are either absent from this market or treating it as a placeholder pending clearer range definitions. Comparable June markets from previous years show that extreme heat (above 32°C) occurs roughly once per decade in early June, whilst temperatures below 20°C are rare but possible during unsettled weather patterns. Conditional order logic should account for the fact that Wunderground occasionally revises historical data within 48 hours of publication, though such adjustments rarely exceed 0.5°C.

Traders monitoring this market should track the East Asian monsoon onset timing and any upper-level ridge positioning forecasted for late May and early June 2026. The Korea Meteorological Administration publishes seasonal outlooks in April, providing early signals for whether June will trend warmer or cooler than the 30-year normal. Automated bots can cross-reference multiple weather models (GFS, ECMWF) against Wunderground's historical volatility patterns to calibrate position sizing around the most probable temperature bands.

Methodology

This page reviews Highest temperature in Seoul on June 9? 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.

What does it cost to trade on Polymarket Bot UK?

Zero. Polymarket Bot UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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 Bot 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.