Highest temperature in Seoul on July 6?

Platform comparison

Market context

On 6 July 2026, Seoul will experience its peak summer heat, with long-term averages indicating daytime highs reaching 28°C under high humidity, while the monsoon season brings concentrated, heavy rainfall that can temporarily suppress temperatures. The prediction market in question currently prices the YES outcome at 0%, reflecting a crowd consensus that the highest temperature at Incheon International Airport will not fall into the specific range being wagered on, likely because the expected peak exceeds the upper bound of that range or the rain prevents the heat from reaching it.

Historical climatology for early July in Seoul consistently supports daytime maximums between 28°C and 30°C, with humidity levels often exceeding 80%, creating a "feels like" temperature above 34°C at midday. This precision market, which resolves to a single exact temperature bucket, carries significant uncertainty even if the modal high is known; similar markets on Polymarket show that even the favourite outcome in an eleven-bucket structure retains a 55% combined chance of being wrong, meaning the 0% price implies the crowd believes the specific range is entirely misaligned with the likely 28°C–30°C reality.

Traders should monitor the Korea Meteorological Administration’s short-range forecasts for the immediate 15-hour window, specifically watching for the probability of precipitation which currently sits at 10% but could spike as the Jangma monsoon intensifies. A sudden shift in the rain schedule could suppress the peak temperature below the expected 28°C, while a dry, sunny spell would push it higher; the upcoming Sinchon Water Gun Festival in late July is a distant cultural catalyst, but the immediate dependency is the hourly precipitation probability, which remains the primary variable for temperature suppression in this rainiest month of the Korean year.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi UK, which mirrors the Polymarket order book directly.

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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Kalshi 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.

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.

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.