Highest temperature in Seoul on July 25?

Platform comparison

Market context

Seoul's peak temperature on 25 July 2026 will be measured at Incheon International Airport Station, the official reference point for the city's weather data. July is Seoul's hottest month, with historical daily highs typically ranging from 28°C to 32°C, though extreme heat events have pushed readings above 35°C in recent years. The 0% crowd probability on this market reflects the absence of specific temperature forecasts at this distance; prediction markets on weather events this far ahead tend to show minimal activity until the settlement window approaches within days rather than months.

Historical context matters here: Seoul experienced 39.6°C in August 2018 during an exceptional heatwave, and July 2023 saw multiple days exceeding 33°C as part of a broader East Asian heat pattern. However, single-day peaks in July typically cluster around 30–33°C under normal conditions. The current flat probability distribution across temperature ranges suggests traders are waiting for meteorological forecasts to crystallise. South Korea's Korea Meteorological Administration publishes extended outlooks roughly two weeks ahead, which will be the primary catalyst for meaningful price movement on this market.

Comparing platforms: Polymarket and Kalshi both offer weather derivatives, though Kalshi's US-focused regulatory framework means Seoul temperature markets appear more commonly on Polymarket and European books like Smarkets. Decimal odds on European exchanges allow finer granularity for temperature bands, whereas Polymarket's binary structure requires separate markets per range. Fee structures vary significantly—Kalshi charges flat maker/taker fees whilst Polymarket uses percentage-based fees—making small-stake weather trades more economical on traditional betting exchanges for this particular event.

Methodology

This page compares Highest temperature in Seoul on July 25? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.