Highest temperature in Shenzhen on July 13?

Platform comparison

Market context

Shenzhen faces its peak summer heat on 13 July 2026, with historical data showing the city’s July high averaging 32°C at the Bao’an International Airport station[1]. The crowd-implied 0% YES probability on Polymarket suggests traders believe the temperature will fall outside the specific range offered, likely because recent records show extreme spikes—China hit its hottest July on record in 2023, and 2022 saw temperatures peaking at 40.9°C on 13 July in parts of the region[4][6]. Such volatility means the 0% price may reflect a narrow range definition rather than a lack of heat risk.

Traders should monitor the daily Wunderground update for the Bao’an station, which serves as the official resolution source, and watch for typhoon forecasts that could suppress temperatures below the range[1]. The subtropical high and typhoon season bring heavy rainfall in July, averaging 340 mm across 17 rainy days, which often lowers peak heat[1]. A recent Reuters report on China’s 2022 heatwave highlights how sudden weather shifts can override seasonal averages, making real-time forecast checks critical before the 2026-07-13T12:00:00Z settlement[6]. On-chain, positions settle in USDC on Polygon using conditional tokens, with liquidity reflecting the binary outcome of the temperature range.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Shenzhen on July 13? 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.