Highest temperature in Shenzhen on August 6?

Platform comparison

Market context

Shenzhen’s hottest reading on 6 August is a late-summer weather event that usually lands in the low- to mid-30s Celsius, but the market is pricing in **0% YES**, which is far below the city’s normal August pattern. Forecast sources published this week point to a daily high around **34°C** for Shenzhen, with nearby Guangdong cities also expected to run in the mid-30s, underscoring how extreme the current crowd price looks versus the broader weather picture.[3][2]

That gap matters because Shenzhen’s August climate is consistently hot, humid and rain-prone rather than cool, with typical August highs around **32°C** and frequent thunderstorms or heavy showers that can suppress the realised maximum without changing the underlying heat load.[4][5][10][19] Comparable forecasts for early August 2026 still cluster around **31–34°C**, so the market’s implied probability diverges sharply from the climatology-based expectation and from standard forecasting models that treat mid-30s as the modal outcome.[6][8][9] On a cross-platform basis, sportsbook-style weather derivatives are rarely quoted here, but the prediction-market line is effectively implying an outcome that looks much colder than both analyst-style seasonal norms and the near-term forecast consensus.

Traders should watch the day’s intraday rain timing, cloud cover and any convective bursts, because those are the main variables that can cap the afternoon high at Shenzhen Bao'an International Airport Station. The settlement source is Wunderground’s historical daily page for the airport station, so the relevant catalyst is not the citywide average but the single highest station reading recorded before local evening cooling sets in; by comparison, Hong Kong Observatory’s city forecast still had Shenzhen at **26–34°C** with fine to cloudy conditions, which leaves room for either a modest upside surprise or a rain-dampened miss.[3][2]

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 PolyGram, which mirrors the Polymarket order book directly.

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.

FAQ

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 PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.