Highest temperature in Shenzhen on May 31?

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Market context

Shenzhen's late-May weather is entering the pre-monsoon transition phase, with afternoon highs typically ranging from 28–32°C at Bao'an International Airport. The settlement window closes at midday on 31 May 2026, meaning only morning and early afternoon readings will count toward resolution. Current crowd positioning at 0% YES suggests traders are either uncertain about which temperature band will resolve or have not yet engaged with this market in volume.

Historical May data from Bao'an shows that peak temperatures on the 31st have varied considerably year to year, influenced by whether the Southwest Monsoon has established itself. In 2023, the 31st recorded a high of 30.8°C; in 2022, it reached 32.1°C. The variance reflects the sensitivity of Shenzhen's late-spring climate to shifts in wind patterns and cloud cover during this transitional period. Comparable markets on Asian airport temperatures at this time of year typically see resolution across multiple bands rather than clustering at extremes.

Traders should monitor the China Meteorological Administration's 10-day forecasts released in the week prior to 31 May, particularly any signals of early monsoon onset or lingering high-pressure systems. Sea-surface temperatures in the South China Sea and upper-atmosphere wind patterns will influence whether the day develops as typically warm or exceptionally hot. The specific resolution source—Wunderground's historical data for Bao'an station—is reliable but dependent on continuous station operation; any sensor downtime would require manual verification against backup meteorological records.

Methodology

This page reviews Highest temperature in Shenzhen on May 31? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Prediction Today — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On Prediction Today, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Prediction Today is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, Prediction Today triggers a quick verification flow that finishes in minutes.