Highest temperature in Shenzhen on August 12?

Platform comparison

Market context

Shenzhen's maximum temperature on 12 August 2026 will be measured at Bao'an International Airport Station and resolved against Weather Underground's Daily Observations table. The 0% crowd-implied probability suggests traders are pricing in an expectation that the highest temperature will fall below the lowest threshold option available on this market, though the specific temperature bands are not detailed in the current specification.

August represents peak summer in Shenzhen, with historical daily highs typically ranging between 32–34°C during this period. The city's subtropical climate produces consistent heat patterns in mid-August, with extreme temperatures above 36°C occurring in roughly 15–20% of years based on three-decade records from Bao'an station. The current zero probability across all options indicates either an absence of trader interest or confidence that the resolution criteria will exclude all standard temperature ranges—a scenario that would require either data unavailability or a technical issue with Weather Underground's reporting.

Traders should monitor Shenzhen's weather patterns from late July onwards, as anomalous heat events or unusual atmospheric conditions could shift expectations substantially. The resolution mechanism's explicit reliance on the Daily Observations table rather than the Day High & Low summary introduces a technical dependency; any divergence between these two Weather Underground data sources could affect settlement. Tropical storm activity in the South China Sea during August occasionally influences Shenzhen's temperatures downward, though such systems are typically tracked weeks in advance through meteorological forecasts.

Methodology

We track Highest temperature in Shenzhen on August 12? 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.

UK Frequently Asked Questions

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 Best Prediction Markets UK. 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.

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

What are the best prediction markets for UK traders in 2026?

For UKGC-regulated markets: Betfair Exchange (sports, politics) and Smarkets (sports, politics, lower commission than Betfair). For broader global event prediction: Polymarket (deepest liquidity, 0% fee, USDC settlement). For US-regulated option: Kalshi (USD, limited UK payment options). Most serious UK traders use a combination of Betfair for regulated sports and Polymarket for broader markets.