Highest temperature in Seoul on July 20?

Platform comparison

Market context

The market hinges on whether Seoul’s Incheon International Airport records a highest temperature on 20 July 2026 that falls within a specific Celsius range, with the crowd currently assigning zero probability to the YES outcome. Historical July data for Seoul shows daily highs typically cluster between 25–30°C, often feeling hotter due to humidity exceeding 80%, while the monsoon season (Jangma) can bring short, heavy rainfalls that temporarily suppress peak temperatures [1][3]. Given that 0% YES implies the crowd expects the temperature to fall outside the defined range entirely, traders should scrutinise whether the market’s range is unusually narrow or misaligned with the region’s typical summer anchors, where 27°C is a common midday reference [3].

Key catalysts include the official Wunderground daily record for RKSI on 20 July 2026, which will serve as the sole resolution source, and any real-time weather advisories from South Korea’s meteorological agency regarding heatwaves or monsoon intensity [1]. Traders must also monitor regulatory developments: the German GlüStV could restrict access for EU users, while the US CFTC’s reach may limit participation for Americans unless using non-KYC brokers like polygram.ink, which permits up to $1,500 without identity verification [2]. This no-KYC threshold significantly broadens accessibility for this weather market, allowing smaller retail traders to bypass geo-blocks that apply to direct Polymarket or Kalshi access [2].

Sources: 1 · 2 · 3

Methodology

This overview of Highest temperature in Seoul on July 20? 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. Is Polymarket Legal in Canada has a different geo footprint.

How are winnings taxed?

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.

Can I trade anonymously?

Pseudonymously, yes — up to the KYC threshold. Is Polymarket Legal in Canada stores an email address and wallet addresses rather than a legal name. Over $1,500 lifetime volume triggers KYC, after which identity is no longer anonymous.

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).