Highest temperature in Shenzhen on August 7?

Platform comparison

Market context

The event is whether the **highest recorded temperature** at Shenzhen Bao'an International Airport on 7 August 2026 falls inside the market’s specified Celsius range, using Weather Underground’s **Daily Observations** table rather than the summary high/low box. In prediction markets, a **YES** share pays out if that exact resolution condition is met, while a **NO** share pays out if it is not, so the key question here is not simply whether Shenzhen is hot, but whether the airport station’s top observation lands in the selected band before the settlement window closes.

A 0% crowd-implied probability usually means traders see the outcome as extremely unlikely, mispriced, or simply untradeable rather than impossible. Shenzhen’s August climate is typically hot and humid, with published climate guides and forecast services putting average highs around the low 30s Celsius and occasional days reaching the mid-30s, so a high-temperature range can easily be filled on a summer day. Recent official forecasts also show southern China under hot conditions, and Hong Kong’s weather bulletin for major Guangdong cities gives Shenzhen a maximum of 34°C, while a Shenzhen warning on 6 August said highs could reach 36°C or above under the outer circulation of a typhoon. [1][13][12]

For traders, the main catalysts are the day’s actual hourly observations at Shenzhen Airport, plus any late changes to the local forecast if cloud cover, rain bands or typhoon-related subsidence shift the temperature path. Because the market resolves from the airport station’s observation log, not a citywide forecast, the decisive detail is the peak value entered in that table by the observation cut-off, which means a brief late-afternoon spike can matter more than the day’s general weather feel.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Shenzhen on August 7? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Prediction Market UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

UK Frequently Asked Questions

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Market UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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%.