Highest temperature in Seoul on June 12?

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Market context

Seoul's weather on 12 June 2026 will be measured at Incheon International Airport Station, where the Korea Meteorological Administration records official temperature data. Early summer conditions in the Seoul metropolitan area typically see daily highs between 25–28°C, though heat waves can push readings above 30°C. The settlement will use Wunderground's historical archive for that specific station, which aggregates official records accessible to the public.

Historical June temperatures at Incheon show considerable year-to-year variation. Between 2015 and 2024, recorded highs on 12 June ranged from 21°C to 29°C, with most years clustering in the mid-to-upper 20s. The 0% crowd probability suggests traders are either uncertain about the exact threshold ranges offered or expect cooler-than-average conditions for that date. Comparable early-summer weather patterns in the region depend heavily on whether the East Asian monsoon onset occurs early or late; premature monsoon arrival typically suppresses temperatures, whilst delayed onset allows warmer continental air masses to dominate.

Traders should monitor the Korea Meteorological Administration's seasonal forecasts, typically released in late May, which indicate whether La Niña or El Niño conditions will influence June weather patterns. Real-time atmospheric pressure systems and upper-air wind patterns in the week preceding 12 June will be decisive; a high-pressure system over northern China would drive warmer air into Korea, whilst a low-pressure trough would bring cooler, wetter conditions. Wunderground's forecast model updates daily and provides the most direct proxy for expected conditions at the resolution station.

Methodology

This page reviews Highest temperature in Seoul on June 12? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Polymarket KYC UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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

Is this market available outside the US?

Polymarket KYC 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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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 it cost to trade on Polymarket KYC UK?

Zero. Polymarket KYC UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.