Highest temperature in Beijing on August 12?

Platform comparison

Market context

On 12 August 2026, the highest temperature recorded at Beijing Capital International Airport Station will fall within one of several defined ranges measured in degrees Celsius. The market currently prices all temperature bands at 0% probability on Polymarket, suggesting either insufficient liquidity or a technical settlement issue, as historical August temperatures in Beijing consistently exceed 25°C. Traders holding USDC on Polygon can enter conditional token positions once the market stabilises, with payouts determined by Weather Underground's Daily Observations table rather than the Day High & Low summary—a distinction that matters when intraday peaks diverge from official highs.

Beijing's August climate presents a narrow historical band. Over the past two decades, maximum temperatures in mid-August have ranged between 28°C and 35°C, with 2023 recording 32°C and 2022 reaching 34°C on comparable dates. The city experiences monsoon influence during this period, occasionally producing cooler outliers, though sustained heat remains the baseline expectation. Current atmospheric patterns and seasonal forecasting models will tighten probability distributions as August 2026 approaches, but the 0% pricing across all ranges suggests the market requires recalibration before meaningful trading activity emerges.

The China Meteorological Administration publishes ten-day forecasts in late July and early August, providing the primary catalyst for probability shifts. Traders should monitor these releases alongside broader Northern Hemisphere summer patterns; any unusual jet stream positioning or tropical cyclone activity affecting East Asia could push temperatures outside the typical 28–35°C envelope. Settlement hinges entirely on Weather Underground's station data, making data availability and sensor reliability secondary considerations for position holders.

Methodology

We track Highest temperature in Beijing on August 12? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

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.

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%.