Highest temperature in Shenzhen on July 25?

Platform comparison

Market context

Polymarket currently prices this contract at 0% implied probability across all temperature bands for Shenzhen's peak on 25 July 2026, suggesting either extreme uncertainty in the underlying forecast or insufficient liquidity to establish meaningful odds. The settlement will depend on the highest temperature recorded at Shenzhen Bao'an International Airport Station on that specific date, with Wunderground historical data serving as the authoritative source. Traders are effectively pricing the question of whether any temperature band will occur at all, rather than differentiating between plausible ranges.

July represents the height of Shenzhen's summer monsoon season, when daily highs routinely exceed 32°C. Historical data from the past decade shows that late July temperatures at Bao'an typically cluster between 32–35°C, with occasional peaks above 36°C during particularly intense heat waves. The 2015 and 2019 summers both saw multiple days exceeding 35°C in this period, providing a baseline for what constitutes typical versus exceptional conditions. Current zero pricing may reflect that the market has not yet populated with meaningful liquidity or that traders are awaiting clearer seasonal forecasts closer to the settlement date.

The primary catalyst for this market will be the Asian summer monsoon pattern and any tropical cyclone activity in the South China Sea during late July 2026. Real-time weather forecasts become substantially more reliable within two weeks of the target date, meaning traders should monitor meteorological updates from the China Meteorological Administration and regional typhoon tracking in early July. Settlement occurs at 12:00 UTC on 25 July, giving traders a fixed window to observe actual conditions before the contract resolves against Wunderground's recorded data.

Methodology

We track Highest temperature in Shenzhen on July 25? 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.

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.

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.

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.

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.