Pronóstico: Highest temperature in Seoul on July 8?

Platform comparison

Market context

On 8 July 2026, Seoul will experience its peak daily temperature at the Incheon International Airport station, a metric that defines the settlement of this Polymarket contract. The market currently prices the 28°C outcome at 72% implied probability, with 27°C holding 39%, while the "YES" option for any temperature below 27°C sits at 0%. This pricing reflects the collective view of traders using USDC on the Polygon network, where conditional tokens are bought and sold to bet on specific temperature ranges.

Historical data frames this high probability for 28°C as consistent with typical midsummer conditions, where Seoul’s daily highs average between 25°C and 30°C, often feeling hotter due to humidity exceeding 80%. July is the rainiest month in Korea, with the monsoon season (Jangma) typically lasting until mid-July, bringing short but intense downpours that can temporarily cool the air. However, even after rain, nights remain warm, and daytime highs frequently reach the upper 20s, with record early-July temperatures in Seoul hitting 37.7°C in 2023, though such extremes are rare anomalies rather than the norm.

Traders should monitor the Korea Meteorological Administration’s short-range forecasts, which currently indicate a 60% chance of rain with temperatures feeling like 29°C, as precipitation patterns will be the primary catalyst for deviation from the 28°C consensus. The resolution depends entirely on Wunderground’s recorded high for all times on 8 July at Incheon Airport, meaning any unforecasted heatwave or prolonged cloud cover could shift the outcome. Recent reports from Anadolu Ajansı highlight South Korea’s vulnerability to record-breaking July heat, suggesting that while 28°C is the frontrunner, traders must watch for sudden shifts in monsoon intensity that could push temperatures lower or higher.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Pronóstico: Highest temperature in Seoul on July 8? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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 Argentina. 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.

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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

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