Highest temperature in Seoul (Incheon) on August 8?

Platform comparison

Market context

Seoul is coming off an intense heatwave, with official reporting showing temperatures of 39.9°C in the capital on 7 August and forecasts still pointing to around 35°C for Seoul and Incheon on 8 August. Reuters said the peak of the heat was expected over Seoul on Thursday, while Korean media on the morning of 8 August still had both cities near 35°C, which is consistent with the market’s current crowd lean towards a mid-30s outcome rather than an outlier spike.[13][7]

The best historical guide is how quickly readings can top out during late-summer heat domes, but also how much smaller coastal and airport stations can run versus inner-city maxima. Seoul has recently printed 40.0°C and 40.2°C at AWS sites, and the Korean press has highlighted that the city’s official climate record still comes from the observatory rather than every automated site, a reminder that station choice matters as much as the headline heat.[3][4] Against that backdrop, the current zero-priced “yes” probability looks detached from the broader weather pattern rather than from any established seasonal norm.[6]

For traders, the main catalyst is whether the heat dome weakens enough by afternoon to cap Incheon before the day’s highest reading is posted in Weather Underground’s Daily Observations table, which is the settlement source here.[12] The key dependencies are the timing of sea-breeze moderation, any convective cloud or shower development, and whether the first next-day observation is published before any late correction to the 8 August record can be made. Reuters’ recent coverage of the government response and Seoul’s near-record forecast is the most relevant news anchor for the market’s direction.[13]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Seoul (Incheon) on August 8? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

UK Frequently Asked Questions

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

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Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.

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It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

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Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.