Highest temperature in Tokyo on August 20?

Platform comparison

Market context

On 20 August 2026, Tokyo's highest temperature will be measured at Haneda Airport Station and recorded in Weather Underground's Daily Observations table. The market resolves to the temperature range containing that single highest reading in degrees Celsius, with the Daily Observations data taking precedence over any summary figures. Settlement occurs at 12:00 UTC on that date.

Tokyo's August temperatures have historically ranged between 28 and 38 degrees Celsius, with peaks typically occurring in mid-to-late afternoon. The 0% crowd probability suggests traders are either awaiting clarity on the specific temperature bands available or treating this as a calibration exercise given the two-year forecast horizon. August 2024 saw Tokyo reach 36.5°C on the 20th; comparable years show considerable variance depending on typhoon activity and upper-atmosphere patterns. Without visibility on the exact range buckets, the current probability reflects genuine uncertainty rather than consensus dismissal.

From a regulatory standpoint, this market's accessibility depends on jurisdiction. Under Germany's GlüStV framework, prediction markets on weather events typically fall outside gaming restrictions when operated by licensed platforms, though cross-border trading remains subject to local interpretation. US CFTC oversight applies to derivatives contracts with real-money settlement; weather prediction markets generally avoid CFTC classification if structured as information contracts rather than financial derivatives. Platforms offering no-KYC access up to $1,500 USD notional exposure per user per market can accommodate retail participation in this Tokyo temperature market without identity verification, though aggregate position limits and settlement currency rules vary by operator jurisdiction. Traders should confirm their platform's specific regulatory status before committing capital.

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

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 Kalshi Legit has a different geo footprint.

Do I need to KYC for Is Kalshi Legit?

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.

What happens during a tax audit?

You're responsible for documenting your trades. Is Kalshi Legit 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.