Highest temperature in Shenzhen on May 31?

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Market context

Shenzhen's maximum temperature on 31 May 2026 will be recorded at Bao'an International Airport Station and resolved against Wunderground historical data. The settlement window closes at 12:00 UTC on that date, creating a hard deadline for temperature measurement. May in Shenzhen typically sits within the warm-to-hot range as the city transitions into summer monsoon season, with historical highs frequently exceeding 30°C during this period.

Historical May data from Shenzhen shows the month consistently records temperatures in the 28–35°C band, with late-May readings trending toward the upper end as subtropical heat intensifies. The 0% crowd probability suggests traders are either awaiting clearer seasonal forecasts or treating this as a calibration market. Comparable May 31st observations from prior years provide the most direct reference point; Wunderground's archive reveals typical late-May maxima cluster around 32–34°C, though occasional spikes to 35°C+ occur during heat waves or when high-pressure systems stall over southern China.

Traders should monitor China Meteorological Administration forecasts released in the weeks leading to settlement, particularly any alerts for heat waves or unusual pressure patterns affecting Guangdong Province. Tropical cyclone activity in the South China Sea during late May can suppress temperatures or drive them higher depending on system proximity and timing. Real-time satellite and model data from sources like Earth Nullschool will become material in the final week as atmospheric conditions crystallise, whilst local Shenzhen weather stations provide granular updates closer to the resolution date.

Methodology

This page reads Highest temperature in Shenzhen on May 31? 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 for comparison. 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.

FAQ

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