Pronóstico: Highest temperature in Seoul on June 29?

Platform comparison

Market context

Seoul is entering its hottest late-June window, with daily highs typically climbing between 29°C and 32°C as humidity rises sharply toward the month’s end. The current crowd-implied probability of 24% YES for the “Highest temperature in Seoul on June 29” market reflects uncertainty about whether temperatures will breach the upper threshold of the contract’s resolution range, which is defined by the Incheon Intl Airport Station record. On Polymarket, this contract trades today at 0.24 USDC per YES share on the Polygon network, where conditional tokens lock in exposure to the Wunderground-reported peak temperature for 29 June 2026.

Historically, late June in Seoul has seen temperatures reach 30°C or higher, with the average high for June 2026 forecast at 87°F (30.6°C) and peaks occasionally hitting 32°C in recent years. The warmest day in June 2026 so far has been 29 June, with a recorded high of 26°C (80°F), though this is below the typical late-month peak. Meteorologists have warned that South Korea’s summer could be its hottest yet, with Seoul reaching 37.1°C in early July 2026—the highest July temperature since 1908—suggesting that extreme heat events are becoming more frequent and intense in the region.

Traders should monitor the Korea Meteorological Administration’s short-range forecasts, which currently indicate daytime highs near 31°C, and watch for any official announcements regarding heatwaves or monsoon activity that could suppress temperatures. A recent report from The Straits Times highlights that meteorologists are flagging this summer as potentially South Korea’s hottest, driven by persistent high-pressure systems and rising baseline temperatures. The settlement window closes at 12:00 UTC on 29 June 2026, so real-time Wunderground updates for the Incheon station will be the final determinant, with USDC payouts executed automatically via Polygon smart contracts once the peak temperature is confirmed.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Qué Es. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Qué Es trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.