Highest temperature in Shenzhen on August 20?

Platform comparison

Market context

On 20 August 2026, the highest temperature recorded at Shenzhen Bao'an International Airport Station will determine settlement across a series of temperature bands measured in degrees Celsius. The market resolves using Weather Underground's Daily Observations table as the authoritative source, with USDC settlement occurring after the settlement window closes at 12:00 UTC that day. Current crowd pricing reflects 0% probability across all ranges, suggesting either insufficient liquidity or genuine uncertainty about which temperature band will capture the day's peak reading.

Shenzhen's August climate presents a narrow historical window for calibration. The city experiences peak summer heat in August, with daily highs typically ranging between 32–34°C, though extreme readings occasionally breach 35°C. Weather Underground data from prior Augusts at Bao'an station shows consistent patterns: afternoon peaks driven by tropical maritime air masses, with occasional relief from afternoon thunderstorms that can suppress maximum temperatures. Traders should cross-reference historical volatility in the 30–36°C range to assess which bands carry genuine probability mass versus those representing tail outcomes.

Catalysts affecting the outcome include tropical cyclone activity across the South China Sea in early-to-mid August 2026, which could introduce cloud cover and precipitation that suppresses peak temperatures, and the phase of the East Asian summer monsoon. Traders monitoring real-time satellite imagery and numerical weather models from the China Meteorological Administration or Japan's JMA in the days preceding 20 August will have material advantage. Settlement precision depends entirely on the specific timestamp and location of the maximum reading at Bao'an station, making source verification critical before position entry.

Methodology

This page reads Highest temperature in Shenzhen on August 20? on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

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