Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Election Predictions UK) Pick polygram.ink (preferred broker) |
57% | 43% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
57% | 43% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 27°C | 57% |
| 26°C | 26% |
| 28°C | 19% |
| 29°C | 3% |
| 30°C or higher | 1% |
| 20°C or below | 0% |
| 21°C | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 25°C | 0% |
Market context
The market hinges on whether Seoul’s June 29, 2026, peak temperature at Incheon International Airport reaches 28°C or higher, with the crowd assigning only a 17% chance to the “YES” outcome. Historical data shows June highs in Seoul typically climb from 77°F to 81°F (25°C to 27°C), rarely exceeding 87°F (31°C) [2]. While South Korea recorded an all-time high of 41.0°C in Hongcheon in 2023, Seoul’s own record stands at 39.6°C set in August 2018, not June [3][4]. Recent June 2024 saw 25.9°C in Seoul, the highest June temperature since 1907, suggesting that 28°C is an outlier even in warming trends [8].
Traders should monitor upcoming meteorological bulletins from the Korea Meteorological Administration and any sudden shifts in regional cloud cover or monsoon activity, which could suppress peak temperatures. No scheduled political debates or campaign-finance disclosures directly influence weather, but broader climate declarations from South Korea’s government in late June may signal heightened heatwave preparedness, indirectly affecting market sentiment [7]. The market is leaning on the absence of a confirmed heatwave forecast for late June 2026; if Wunderground or KMA issues a “high temperature alert” before June 28, the probability of 28°C+ could surge. Watch for real-time updates on Wunderground’s Incheon station page as the settlement window closes at 12:00 UTC on June 29 [1].
Methodology
This page tracks Highest temperature in Seoul on June 29? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Election Predictions UK provide a 0%-fee route into the same order book.
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.
FAQ
- What resolution source is used for elections?
- 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.
- Can prediction markets influence election outcomes?
- Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.
- How fast do political markets react to news?
- High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.
- Are political prediction markets legal in my country?
- 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.
- Which political events have the biggest volume?
- US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.
Trade Highest temperature in Seoul on June 29? on Election Predictions UK
Live order book, 0% fees, USDC settlement in seconds.
Open live market →