Highest temperature in Seoul on July 18?

Platform comparison

Market context

Seoul's peak temperature on 18 July 2026 will be measured at Incheon International Airport Station and resolved against historical weather data from Wunderground. July is Seoul's warmest month, with typical highs between 28–30°C, though heat waves can push readings above 35°C. The settlement window closes at midday UTC, meaning the final recorded high must be captured before that timestamp to count toward resolution.

Historical July temperature records for Seoul show considerable year-to-year variance. The city has recorded peaks as low as 26°C and as high as 37°C in the same calendar month across different years, reflecting the influence of monsoon patterns and Pacific typhoon activity. The 0% crowd probability suggests traders currently expect the market's temperature brackets to exclude the actual outcome, a pattern common in weather markets where baseline forecasts prove insufficient once conditions develop. Comparable July markets in East Asian cities typically see probability mass concentrated around 28–32°C ranges, with tail outcomes (sub-25°C or above-35°C) commanding lower odds.

Traders should monitor the Korean Meteorological Administration's extended forecasts from mid-July onwards, as these typically incorporate ensemble models with 10–14 day lead times. Upper-air patterns, the position of the North Pacific high-pressure system, and any tropical cyclone activity in the Western Pacific will determine whether Seoul experiences typical summer heat or anomalous conditions. Real-time weather updates from major news outlets covering East Asia will signal shifts in these drivers closer to the resolution date.

Methodology

This overview of Highest temperature in Seoul on July 18? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.

Resolution & payout

On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.

FAQ

Is Polymarket legal in my country?

Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Legal UK has a different geo footprint.

What happens during a tax audit?

You're responsible for documenting your trades. Polymarket Legal UK exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.

Are prediction markets gambling?

Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.

Is there a withdrawal cap?

No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).

What if regulation changes?

If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Legal UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.