Highest temperature in Seoul on July 1?

Platform comparison

Market context

The underlying event is the highest temperature recorded on 1 July 2026 at Incheon International Airport, measured in degrees Celsius and sourced from Wunderground. While the current crowd-implied probability for a "YES" outcome sits at 0%, historical data frames this as a mispricing rather than a certainty; Seoul’s July averages routinely reach 28°C to 30°C, with daily highs often closing near 30°C and humidity pushing perceived temperatures above 34°C[3][4]. Comparable cases show that "tropical nights" (overnight lows above 20°C) have occurred consecutively for weeks, and a century-old record fell recently when Seoul hit its 26th such night in a row, indicating a warming trend that contradicts the 0% probability[7].

Traders should monitor the monsoon schedule, as July is the rainiest month in Korea with concentrated, heavy showers that can temporarily suppress peak temperatures[3]. The primary dependency is the timing of the Jangma season, which typically ends mid-July but can linger, creating a risk of sudden cooling if rain clears the heat[3]. Recent forecasts from AccuWeather indicate daily highs ranging from 81°F to 89°F (27°C–32°C), suggesting the market’s 0% probability ignores the statistical likelihood of temperatures exceeding 30°C[5]. Regulatory accessibility remains a key factor: under German GlüStV and US CFTC reach, platforms offering "no-KYC up to $1,500" allow immediate participation without identity verification, making this market highly accessible for retail traders despite the regulatory scrutiny on prediction markets[1]. This accessibility means liquidity can shift rapidly if new weather data emerges, challenging the current consensus.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This overview of Highest temperature in Seoul on July 1? 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

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FAQ

Is Polymarket legal in my country?

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Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.

What happens during a tax audit?

You're responsible for documenting your trades. Polymarket Tax 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.

What if regulation changes?

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