Highest temperature in Shenzhen on August 12?

Platform comparison

Market context

On 12 August 2026, the highest temperature recorded at Shenzhen Bao'an International Airport will fall into one of several defined ranges. This market asks traders to predict which range will contain that peak reading, measured in degrees Celsius and sourced from Weather Underground's Daily Observations table rather than summary figures. A YES share pays out if the temperature lands in the specified range; a NO share pays if it lands elsewhere. The 0% crowd probability suggests traders currently expect the target range to be unlikely, though without seeing the specific temperature brackets offered, this reflects either confidence in an alternative range or genuine uncertainty about August conditions in Shenzhen.

Shenzhen's August climate is consistently hot and humid, with historical highs typically between 32–34°C. The city experiences its peak summer season during this month, with occasional days exceeding 35°C during heat waves, though such extremes remain relatively infrequent. Weather Underground data from previous Augusts shows most daily maxima cluster in the 32–33°C band, providing a baseline for assessing whether the market's current odds reflect realistic seasonal patterns or a mismatch between available ranges and expected outcomes.

Traders should monitor tropical cyclone activity in the South China Sea during late July and early August, as systems can suppress temperatures or create volatile conditions. The China Meteorological Administration typically issues seasonal forecasts by late June; any official alerts regarding heat waves or unusual patterns would shift expectations. Resolution depends entirely on Weather Underground's Daily Observations feed, so data availability and station functionality at Bao'an Airport remain critical dependencies through the settlement window.

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Prediction Market UK, which mirrors the Polymarket order book directly.

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%.