Highest temperature in Shenzhen on August 11?

Platform comparison

Market context

On 11 August 2026, the highest temperature recorded at Shenzhen Bao'an International Airport will determine this market's outcome. The resolution hinges on Weather Underground's Daily Observations table rather than its Day High & Low summary—a distinction that matters when automated systems occasionally diverge. Currently priced at 0% YES on Polygon, the market reflects either extreme confidence in cooler conditions or minimal liquidity; traders holding conditional tokens denominated in USDC face a binary outcome across defined temperature bands once the settlement window closes at noon UTC on that date.

Shenzhen's August climate presents a consistent baseline. Historical data from the past decade shows daily highs at Bao'an typically range between 32–35°C during mid-August, with occasional peaks reaching 36–37°C during heat waves. The 0% probability suggests the market has priced in either an unusually cool August or reflects the contract's low trading volume rather than meteorological conviction. Comparable August days in 2023 and 2024 recorded highs of 34–35°C; extreme heat events pushing above 37°C occur but remain statistically infrequent in this period.

Traders should monitor tropical cyclone activity in the South China Sea during early August 2026, as systems approaching the region can suppress temperatures significantly. The China Meteorological Administration's seasonal forecasts, typically released in late July, will provide guidance on monsoon patterns affecting the Pearl River Delta. Any unusual atmospheric pressure systems or El Niño developments reported by international weather services in the weeks preceding 11 August could shift conditional token valuations substantially.

Methodology

This page reviews Highest temperature in Shenzhen on August 11? 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 Kalshi 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 Kalshi UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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%.