Highest temperature in Tokyo on August 4?

Platform comparison

Market context

Tokyo Haneda Airport’s highest temperature on 4 August will be set by the day’s actual maximum reading at the airport station, so the market is essentially a wager on whether Tokyo peaks within the low-, mid- or high-30s Celsius on that calendar day. The current 0% YES implies the crowd sees no realistic path to a specific range being met under the market’s resolution bands, although Tokyo’s August climatology is firmly summer-hot rather than cool: month-ahead forecasts cluster around highs of roughly 31–33°C, with some daily forecasts showing values in the mid-30s Celsius and warm overnight lows. [1][2][10][17]

Historical comparison matters because Tokyo’s summer maxima can be volatile by several degrees depending on cloud cover, rain bands and humidity. JMA daily records for Tokyo and Haneda show early-August highs already reaching the mid-30s Celsius in recent years, while other comparable forecasts for the same period have sat closer to 28–31°C; that spread is why a zero-implied market can still move if a hot afternoon builds after a mild morning. For accessibility, German GlüStV-style restrictions are relevant because tightly regulated German-facing services may treat prediction markets as gambling-like products with additional approval, age-verification and offer-limitation issues, while US CFTC reach is most relevant if a platform or user nexus touches US derivatives law. A “no-KYC up to $1,500” threshold generally means small accounts can trade or withdraw within that cap without full identity verification, but activity above the limit, suspicious activity checks or jurisdiction screening can still trigger KYC and block access. [8][10][16]

The main catalysts are the Tokyo weather evolution over the day: sunshine breaking through early cloud, any afternoon convective showers, and the exact timing of sea-breeze or typhoon-related changes, all of which can shift the observed maximum at Haneda. Traders should watch the Japan Meteorological Agency’s intraday updates and airport-area forecasts, because a forecasted 31–33°C day can still resolve lower if rain arrives early, or higher if clearing and strong insolation push the afternoon peak above expectations. Recent Tokyo forecasts on major weather services have already pointed to warm, humid conditions rather than anything extreme, with August broadly expected to stay in the low 30s Celsius. [1][2][12][19]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This overview of Highest temperature in Tokyo on August 4? 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 Legal UK has a different geo footprint.

Do I need to KYC for Polymarket Legal UK?

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.

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).