Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Germany Legal) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
99% | 1% | 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 |
|---|---|
| 32°C | 99% |
| 33°C | 1% |
| 27°C or below | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 36°C | 0% |
| 37°C or higher | 0% |
Market context
Shenzhen’s daily high on 5 August will be set by the hottest reading at Shenzhen Bao’an International Airport Station, so the relevant question is not the midday forecast but the single peak temperature recorded before the settlement cut-off. In late-summer Shenzhen, published August norms cluster around the low 30s Celsius, with forecasts in the 31–33°C range and frequent rain, which can cap extremes but also leave room for brief humid spikes if cloud breaks occur.[1][2][6][10]
The 0% crowd-implied probability is best read as a market-structure signal rather than a weather call. For temperature markets, outsized moves usually come from a late update in the airport observation, a hotter-than-expected morning, or a convective burst that suppresses the day’s peak; comparable Shenzhen August guidance still points to mid-30s Celsius as a plausible upper band, so a zero price is difficult to square with the climatology.[1][3][19] For Germany-facing users, the legal framing matters: if access is offered from Germany, the GlüStV risk is that event-contract style markets can be treated as gambling-like products unless the operator has a suitable authorisation, while US CFTC reach is relevant because offshore event contracts can still draw regulatory scrutiny where US persons are involved. The advertised “no-KYC up to $1,500” means a user may be able to open or trade below that threshold with limited identity checks, but it does not change the underlying venue, settlement, or regulatory status.
What traders should watch is the live weather sequence around Shenzhen airport: early-morning observations, forecast model revisions, rain bands, and any typhoon-related disruption that can alter the day’s maximum temperature. The settlement source is Wunderground’s Shenzhen Bao’an International Airport history page, so the only number that matters is the day’s highest recorded Celsius reading there, not the city average or a different station.[10][11]
Methodology
This overview of Highest temperature in Shenzhen on August 5? 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.
- 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 happens during a tax audit?
- You're responsible for documenting your trades. Polymarket Germany Legal 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 Germany Legal would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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