Highest temperature in Tokyo on July 13?

Platform comparison

Market context

Tokyo will experience its peak daytime heat on 13 July 2026, measured specifically at the Tokyo Haneda Airport Station, with the market resolving to the Celsius range containing that day’s highest reading. Forecasts for Haneda in July 2026 indicate daily highs between 24°C and 33°C, while recent national records show Japan has broken its all-time heat ceiling, hitting 41.2°C in Hyogo Prefecture last month [1][7]. The current 0% crowd-implied probability for the YES outcome likely reflects a mismatch between the specific range offered and the historical likelihood of Haneda exceeding extreme thresholds, even as nationwide averages for July 2025 were 2.89°C above the 1991–2020 baseline [5].

Traders should monitor the Japan Meteorological Agency’s daily heatwave bulletins and real-time Wunderground data for Haneda, as sudden convective storms or marine fog can suppress peak temperatures despite high regional heat [3][5]. The settlement relies entirely on the single highest reading recorded for all times on that day, meaning a brief spike above 35°C would shift the outcome, yet mid-July humidity often caps urban airport readings below inland extremes [6].

Regulatory accessibility hinges on jurisdiction: German GlüStV implications may restrict access for EU residents, while US CFTC reach creates compliance barriers for American traders, though the ‘no-KYC up to $1,500’ threshold allows immediate participation for those under the threshold without identity verification. This structure permits rapid entry into weather-linked contracts but does not override local tax obligations or licensing requirements for larger positions.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This overview of Highest temperature in Tokyo on July 13? 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 Tax UK 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. Polymarket Tax UK 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 Tax UK exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.

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.