Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Germany Legal) Pick polygram.ink (preferred broker) |
83% | 17% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
83% | 17% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 31°C | 83% |
| 32°C | 17% |
| 33°C | 2% |
| 25°C or below | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 34°C | 0% |
| 35°C or higher | 0% |
Market context
Shanghai's highest temperature on 15 August 2026 will be measured at Pudong International Airport Station and recorded in Weather Underground's Daily Observations table. The settlement mechanism prioritises this granular dataset over summary figures, meaning intraday peak readings take precedence over day-high summaries. Current crowd pricing at 0% suggests either extreme confidence in a specific temperature band or minimal trading activity; historical August maxima in Shanghai typically range between 32–37 °C, so the absence of probability mass across all bins warrants scrutiny of market liquidity rather than meteorological consensus.
August temperatures in Shanghai are shaped by the East Asian summer monsoon and occasional tropical cyclone activity. The 2024 and 2025 August records provide calibration points: both years saw sustained heat above 35 °C for extended periods, with occasional spikes into the 37–38 °C range during high-pressure systems. Traders should monitor China Meteorological Administration forecasts released in late July and early August, as well as any typhoon warnings from the Japan Meteorological Agency that could suppress temperatures through cloud cover and precipitation. Reuters and Bloomberg typically carry Shanghai weather outlooks 10–14 days ahead.
From a regulatory standpoint, this market's accessibility depends on jurisdiction. Under German GlüStV rules, prediction markets on weather events fall outside gaming licences if they serve genuine price discovery; US CFTC oversight applies to derivatives contracts but not to binary prediction markets meeting certain conditions. No-KYC trading up to $1,500 USD per calendar year is standard on many platforms operating under exemptions, though individual operators vary. Traders should verify their platform's specific regulatory status before participation.
Methodology
This overview of Highest temperature in Shanghai on August 15? 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 Germany Legal has a different geo footprint.
- 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 if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Germany Legal would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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