Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Trump Prediction) Pick polygram.ink (preferred broker) |
89% | 11% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
89% | 11% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 28°C | 89% |
| 29°C | 10% |
| 27°C | 1% |
| 30°C | 1% |
| 22°C or below | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 25°C | 0% |
| 26°C | 0% |
| 31°C | 0% |
| 32°C or higher | 0% |
Market context
Seoul is currently experiencing the monsoon season, where July brings intense humidity and short, heavy rainfalls that frequently suppress peak daytime temperatures. The market’s 0% YES probability for a specific high-temperature range aligns with historical patterns where midday heat is often capped by cloud cover and precipitation, making sustained extreme warmth unlikely before late July or August.
Historical data confirms that Seoul’s July highs typically hover between 25°C and 30°C, with occasional spikes nearing 30°C but rarely exceeding it due to the prevailing moisture. Comparable cases from recent years show that the wettest month in Korea often sees average highs in the upper 20s, while the “feels like” temperature rises significantly due to humidity, yet actual recorded maxima remain moderate. Traders should note that late July and August usually deliver the most sustained heat, suggesting the current window is too early for record-breaking temperatures.
Key catalysts to watch include the Korea Meteorological Administration’s short-range forecasts, which currently indicate slight rainfall and a 60% probability of precipitation, directly influencing temperature suppression. Additionally, the Sinchon Water Gun Festival in late July may signal increased public activity and water usage, though its timing is after the settlement window. The market leans heavily on the immediate weather dependency, with no major political declarations or campaign-finance disclosures expected to alter the meteorological outcome. According to AccuWeather, daily highs for July 2026 range from 81°F to 91°F, reinforcing the moderate temperature ceiling.
Methodology
This page tracks Highest temperature in Seoul on July 2? 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 Trump Prediction 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
- 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.
- 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.
- Why do Polymarket and Kalshi differ on elections?
- Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.
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