Highest temperature in Seoul on June 14?

Platform comparison

Active sub-markets

Market context

Seoul's weather on 14 June 2026 will be measured at Incheon International Airport Station, with the market resolving to whichever temperature band contains the day's high. The settlement window closes at midday UTC, meaning traders must account for the full calendar day in Seoul (UTC+9) before the cut-off. Wunderground's historical data serves as the authoritative source, accessible via the linked station page with a simple toggle between Celsius and Fahrenheit readings.

Mid-June in Seoul sits at the threshold of the rainy season, with historical highs typically ranging between 26–29°C. The 0% crowd probability suggests either extreme confidence in a specific outcome or sparse liquidity on this particular market. Comparable weather markets on Kalshi and Polymarket show divergent fee structures—Kalshi's flat-fee model versus Polymarket's percentage-based approach—which can materially affect break-even thresholds on narrow temperature bands. Betfair's decimal odds format and Smarkets' fractional pricing may appeal to different trader bases, though all four platforms require KYC verification for Seoul-based participants, limiting direct arbitrage opportunities across books.

Traders should monitor the Korea Meteorological Administration's 10-day forecasts and any tropical system activity in the Western Pacific. June 2026 falls within the pre-monsoon window; anomalous heat waves or early-season rainfall patterns could shift expectations significantly. The settlement source's reliance on a single airport station means localised weather events affecting Incheon specifically—fog, convection, or wind patterns—carry outsized importance relative to broader Seoul metropolitan conditions.

Methodology

We read Highest temperature in Seoul on June 14? from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Where can I trade this market with the lowest fees?

On Kalshi Alternative 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?

Kalshi Alternative 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.

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.

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, Kalshi Alternative UK triggers a quick verification flow that finishes in minutes.