Highest temperature in Shenzhen on July 13?

Platform comparison

Market context

Shenzhen is set to experience its peak summer heat on 13 July 2026, with the Shenzhen Bao'an International Airport Station expected to record a daily maximum near the monthly average of 32°C. Historical data confirms that July is the hottest month in the city, typically reaching highs of 32°C to 35°C, often tempered by subtropical highs and frequent typhoon-related rainfall [1][9]. The current 0% crowd-implied probability for a "YES" outcome on any specific high-temperature range suggests the market is pricing in a near-certainty of the temperature falling within a standard, non-extreme band, diverging from the 100% implied probability that the day will indeed be hot.

Traders should monitor real-time updates from the Hong Kong Observatory and Wunderground for deviations caused by incoming thunderstorms or heavy rain, which historically lower peak temperatures in mid-July [1][10]. While China recently experienced its hottest July on record nationally, Shenzhen’s local microclimate often sees intense precipitation that caps maximums below the 35°C extremes seen in northern provinces [4]. The settlement relies strictly on the highest temperature recorded at the airport station, meaning a brief heat spike followed by a downpour could still resolve the market differently than a consistently cloudy, cooler day.

Comparing cross-platform odds, sportsbooks rarely offer single-day weather contracts for specific Chinese airports, leaving prediction markets like Polymarket as the primary venue for this exposure. The 0% implied probability indicates a lack of speculative interest in outlier heat events, contrasting with analyst consensus that views 32°C as the baseline rather than an anomaly. Kalshi.com does not currently list this specific Shenzhen contract, creating a liquidity gap where Polymarket traders hold the sole pricing power for this localized weather event.

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

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.

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.

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.

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.