Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
44% | 56% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
44% | 56% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 34°C | 44% |
| 35°C | 31% |
| 36°C | 23% |
| 33°C | 7% |
| 31°C | 2% |
| 37°C or higher | 2% |
| 32°C | 1% |
| 27°C or below | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
Market context
The market concerns the highest temperature recorded at Shenzhen Bao'an International Airport on 19 August 2026, with resolution determined by the Daily Observations table on Weather Underground rather than summary figures. The settlement window closes at midday UTC on that date, meaning traders must assess peak temperature likelihood before morning observations are finalised.
Shenzhen's August climate is consistently hot and humid, with historical daily highs typically ranging between 31–34°C. The city experiences its monsoon season during this period, which can introduce variability through cloud cover and precipitation. Looking at comparable August dates from recent years, the airport station has recorded peaks exceeding 35°C on roughly 30–40% of days, whilst temperatures below 30°C remain rare. The 0% crowd probability suggests the market may be pricing in an unusually cool day or reflecting low trading volume rather than meteorological expectation.
Key variables affecting the outcome include the strength of the East Asian summer monsoon in mid-August 2026 and any tropical cyclone activity in the South China Sea during the preceding week. Weather forecasts become reliable only 7–10 days before the date, so traders should monitor tropical cyclone advisories from the China Meteorological Administration and regional pressure systems in early August. The airport's location near the coast means sea-surface temperatures and wind patterns from the Pearl River estuary will influence daytime heating. Any significant weather system moving through southern China in the week prior would be the primary catalyst shifting probabilities materially.
Methodology
Sports-specific comparison page for Highest temperature in Shenzhen on August 19?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
UK Frequently Asked Questions
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
Trade Highest temperature in Shenzhen on August 19? on Sport Prediction
Live order book, 0% fees, USDC settlement in seconds.
Open live market →