Highest temperature in Seoul on July 8?

Platform comparison

Market context

On 8 July 2026, Seoul will face its peak early-month heat, with the Incheon International Airport station recording the day’s highest temperature in degrees Celsius. This single data point, sourced from Wunderground, determines the market outcome, making it a precise utility for traders who programmatically monitor real-time weather feeds rather than relying on broad forecasts.

Historical precedents frame the current 0% YES probability as a statistical outlier rather than a certainty. In early July 2024, Seoul reached a record 37.8°C, the highest ever recorded between 1–10 July since records began[1]. While July typically sees average highs near 30°C with humidity pushing felt temperatures over 34°C[3], the monsoon season (Jangma) often brings heavy rain that suppresses extremes, though central inland cities like Seoul remain prone to intense heat spikes[3]. The 22 tropical nights recorded in July 2025, where temperatures stayed above 29.3°C overnight, signal a warming trend that could elevate 2026’s peak[10].

Traders should watch the Korea Meteorological Administration’s short-range forecasts for rain probability and wind direction, as slight precipitation or sea breezes can drastically alter the peak temperature[6]. Recent news highlights South Korea’s 117-year record of tropical nights in July 2025, suggesting a climate shift that may push 2026’s highs beyond historical norms[10]. Programmatically, conditional orders should trigger on Wunderground’s hourly updates, with dependencies on real-time humidity and cloud cover data to refine entry points before the settlement window closes.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Seoul on July 8? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Review UK, which mirrors the Polymarket order book at 0% fees.

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 Review UK. 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 Review UK 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.