Highest temperature in Guangzhou on August 6?

Platform comparison

Market context

Guangzhou is still set for a **hot, unstable** day, with nearby official forecasts pointing to a maximum around **36°C** and frequent cloud or showers rather than clear, uninterrupted sunshine.[4][5] The crowd’s **0% YES** implies the market is not treating any outcome as locked in yet, but the live weather setup still matters because the settlement uses the **highest temperature recorded at Guangzhou Baiyun International Airport Station** on the day, not a generic city average.[11]

That framing is consistent with Guangzhou’s August climate, when daily highs commonly sit in the **low 30s Celsius** and humidity is high.[1][14][17] Comparable August references show a typical high near **33–34°C**, while more aggressive heat can still push the day into the mid-30s, which is the band traders usually watch for in this market.[10][12][15] In other words, the key question is not whether Guangzhou is hot, but whether heating and any breaks in cloud cover are enough to lift the airport reading above the most common forecast range.[2][6]

The main catalysts are the **daytime forecast updates**, local shower timing, and any change in cloud cover or thunderstorm risk before the afternoon peak.[2][4][5] Traders should also watch the airport station’s progression through the day, because the market resolves to the **daily maximum** on Wunderground, so a brief spike can matter more than the later evening pattern.[11] If the official city forecast shifts by even 1°C, that can re-centre which temperature bucket is most plausible near settlement.[4][5]

Sources: 1 · 2 · 3 · 4 · 5

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 Today, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

UK Frequently Asked Questions

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.

What's the difference between YES and NO shares?

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.

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%.