Highest temperature in Tokyo on July 27?

Platform comparison

Market context

Tokyo Haneda’s maximum temperature for the day will be set by a single airport station reading from Wunderground, so the market is really about whether a late-July heat spike lands in the relevant bracket rather than the citywide average. Tokyo’s July climatology is warm, with an average daily high of about 27°C, while recent summaries for late July note that 35°C to 38°C readings are not unusual in hot spells, especially in the urban core.[1][4]

The current **0% YES** implies the crowd is pricing the outcome as outside the YES band, which is consistent with a market that only pays if the day’s high reaches a specified range rather than merely being warm. July in Tokyo is also humid and often rainy, with about 169 mm of rainfall cited for the month, so cloud cover or showers can cap intraday highs even when the broader seasonal background is hot.[2] Comparable Tokyo summer weather histories suggest that small shifts in wind, rain, or timing of sunshine can move the day’s peak temperature enough to matter at the margin.[3][4]

For accessibility, the market sits in a regulatory zone that is not uniform across users: German participants face GlüStV-related gambling constraints that can affect access to prediction markets, while US users should note that the CFTC’s jurisdiction can reach event contracts tied to weather or other real-world outcomes. “No-KYC up to $1,500” typically means a trader can transact to that cumulative limit without submitting identity documents, which lowers friction for small positions but does not remove geo-blocks, tax reporting duties, or platform-level compliance checks for this specific market.

Sources: 1 · 2 · 3 · 4

Methodology

This overview of Highest temperature in Tokyo on July 27? 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

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.

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).