Highest temperature in Shenzhen on August 1?

Platform comparison

Market context

Shenzhen Bao’an International Airport’s hottest reading on 1 August will usually be driven by a humid, monsoon-influenced afternoon maximum rather than an early-morning spike. Seasonal guides put Shenzhen’s August daytime highs around 31–32°C, with typical lows near 26–27°C, and several sources note a hot, sticky peak-summer pattern with frequent showers and thunderstorm risk.[3][9][13][18]

For a market priced at 0% YES, the practical read is that the crowd is effectively assuming an outcome outside the listed temperature bands or treating the source as unlikely to print a confirmable value. Programmatically, a trader would model the contract against the station’s reported *daily maximum* on Wunderground, then map that number into the market’s settlement range rather than relying on generic city forecasts, which can differ from airport observations and from the final recorded history page.[2][19] Historical August data for Shenzhen show very warm conditions are normal, with record highs around the low 40s Celsius being possible in the broader city climate record, although day-to-day airport readings are usually several degrees lower than citywide extremes.[1][8]

The main catalysts are the actual weather setup over south Guangdong, including any organised convection, rain bands, or tropical systems that can suppress the daytime high, plus the timing of cloud cover relative to the afternoon heating cycle. Shenzhen’s rainy season runs through summer, and August is repeatedly flagged as a month with elevated thunderstorm and typhoon exposure, so traders watching bots or conditional orders would focus on updates from the local forecast model cycle and any public advisories that might change cloud/rain expectations before the noon UTC settlement cut-off.[9][13][18]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Shenzhen on August 1? 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

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 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 Kalshi Fees trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.