Highest temperature in Shenzhen on August 2?

Platform comparison

Market context

Polymarket is pricing this Shenzhen heat contract at **0% YES** today, which on-chain means the conditional tokens tied to the **USDC** pool on **Polygon** are effectively saying the market sees almost no chance of a very high airport reading being the settlement outcome. The event itself is straightforward: the market resolves from the **highest temperature recorded at Shenzhen Bao’an International Airport Station** on 2 August 2026, using the Wunderground history page as the source of truth, so the key variable is the single-day peak rather than the average or overnight low.

Historical weather context makes that 0% print easier to read. August in Shenzhen is normally hot and humid, with average highs around **32°C to 32.2°C** and typical daily highs near **89°F to 90°F** across multiple climate references.[4][6][7][9] But the city’s August record extremes are much wider than the average, with sources showing monthly record highs of **38°C to 39°C** in some datasets and even **103°F** in another summary, underlining that short-lived spikes do occur.[1][7][16] For a Polymarket user, that means a seemingly low price is not a statement about normal weather; it is a statement about the chance of a specific airport reading reaching the contract’s higher bands on this one day.[1][6]

The main catalysts are the same ones weather traders watch in any South China summer setup: the local forecast cycle, convective thunderstorms, cloud cover, and any typhoon-related disruption that can suppress afternoon heating. Shenzhen’s August climate is also described as rainy and thunderstorm-prone, with substantial monthly rainfall and high humidity, which can cap the day’s maximum even when the air mass is warm.[4][9][16][17] Because settlement is based on the airport station and the window closes at **12:00 UTC**, intraday updates and the timing of the warmest local-afternoon hour matter more than broad city climatology.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Shenzhen on August 2? 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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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.

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.