Highest temperature in Tokyo on August 20?

Platform comparison

Market context

On 20 August 2026, the highest temperature recorded at Tokyo Haneda Airport Station will determine the settlement range for this market. Resolution hinges on the Daily Observations table within Weather Underground's historical records, not the summary Day High & Low figures, a distinction that matters when intraday spikes occur. The settlement window closes at 12:00 UTC on that date, meaning any temperature recorded after midnight local time in Tokyo will not factor into the outcome.

Tokyo's August temperatures typically cluster between 32–35 °C, with occasional peaks above 36 °C during heat waves. The 0% crowd probability suggests traders currently perceive no meaningful chance of an extreme outlier—a reasonable baseline given that temperatures exceeding 40 °C at Haneda remain rare, though not unprecedented. Historical August records at the airport show variability driven by typhoon proximity and Pacific high-pressure systems; comparing this market's implied range against Japan Meteorological Agency seasonal forecasts released in July 2026 will clarify whether consensus expectations have shifted.

From a regulatory standpoint, this market operates under German GlüStV provisions if accessed from the EU, with US CFTC oversight applying to US-domiciled traders. The no-KYC threshold of $1,500 USD permits retail participation without identity verification up to that stake level, lowering barriers for casual weather forecasters. Traders should monitor Japan Meteorological Agency advisories in mid-August 2026 and track Haneda's automated station data feeds directly, as Weather Underground's Daily Observations table occasionally lags real-time reporting by several hours—a technical lag that could affect settlement interpretation if temperatures spike near range boundaries.

Methodology

This overview of Highest temperature in Tokyo on August 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

Do I need to KYC for Polymarket Germany Legal?

Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.

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. Polymarket Germany Legal 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.

What happens during a tax audit?

You're responsible for documenting your trades. Polymarket Germany Legal 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.