Highest temperature in Guangzhou on August 6?

Platform comparison

Market context

Guangzhou Baiyun International Airport is the reference point here, so the contract will settle on the day’s **maximum observed temperature** there on 6 August, converted into the market’s range. For a programmatic workflow, that means polling the Wunderground history page after local midday and again after the full-day archive updates, then mapping the reported peak Celsius value into the contract’s outcome bands rather than relying on citywide forecasts or nearby stations.[9]

The historical frame is straightforward: Guangzhou’s August climate is usually hot, humid, and rain-prone, with long-run average highs around **32–33°C** and typical daily highs often in the low-to-mid 30s Celsius.[11][12][15] Published August averages from multiple weather references cluster around 32°C to 33°C for highs, while individual August days can push into the mid-30s, which is consistent with the city’s summer peak-season profile.[3][11][12] Against that backdrop, a **0% YES** implied probability is not a statement that heat is impossible; it usually indicates the current market price has not yet incorporated a plausible high-end reading or that traders are waiting for live weather confirmation rather than modelled expectation.

For traders running bots or conditional orders, the practical catalysts are the same ones that move the terminal reading: afternoon convective showers, cloud cover, and any thunderstorm timing that caps the daytime high before the airport station peaks. Guangzhou’s August climate typically brings substantial rainfall and high humidity, so the highest temperature can be decided by a short clear spell before storms build, making intraday updates more useful than daily summaries.[2][11][12][15] The key dependency is the station-level historical record on Wunderground, not a general city forecast, so automated checks should watch the airport station page for the final maximum rather than extrapolating from broader Guangdong weather products.[9]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Guangzhou on August 6? 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

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 Polymarket Bot 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%.