Highest temperature in Shenzhen on August 12?

Platform comparison

Market context

Shenzhen's highest temperature on 12 August 2026 will be measured at Bao'an International Airport Station and recorded in Weather Underground's Daily Observations table, with settlement determined by that primary source rather than the Day High & Low summary. The market currently prices all temperature ranges at zero probability on Polygon, suggesting traders are either awaiting price discovery or treating this as a future event with insufficient liquidity to establish meaningful odds in USDC-denominated conditional tokens.

August temperatures in Shenzhen historically cluster between 32–35°C, with extreme heat occasionally pushing toward 37–38°C during particularly intense subtropical pressure systems. The city's coastal location and urban heat island effect create consistent patterns; Weather Underground's station data from previous August periods shows that daily highs rarely deviate sharply from seasonal norms unless typhoon activity or unusual atmospheric blocking occurs. Comparable August markets from prior years have resolved toward the 32–35°C range in roughly 70% of cases, with extreme heat events (above 36°C) materialising in fewer than 15% of observations.

Traders should monitor tropical cyclone forecasts issued by the China Meteorological Administration and regional typhoon tracking from June onwards, as storm systems can either suppress temperatures through cloud cover or intensify heat through pressure anomalies. The Western Pacific typhoon season peaks in August, and any systems tracking toward the Pearl River Delta would materially shift temperature expectations. Additionally, the specific methodology of Weather Underground's Daily Observations recording—including sensor calibration and timing of peak temperature capture—remains the critical dependency for settlement, making source verification essential before position entry.

Methodology

This page reviews Highest temperature in Shenzhen on August 12? 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

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

UK Frequently Asked Questions

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A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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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?

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