Highest temperature in Shenzhen on May 30?

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Market context

On 30 May 2026, the highest temperature recorded at Shenzhen Bao'an International Airport Station will fall into one of several defined ranges. Shenzhen's subtropical climate typically produces late-May highs between 28 and 34 degrees Celsius, though extreme heat events pushing above 35 degrees have occurred in recent years during early summer heat waves. The settlement mechanism relies on historical weather data from Weather Underground, with resolution determined by the single highest temperature reading across all times on that calendar day.

Historical May temperatures at Bao'an Airport show considerable year-to-year variation. Between 2015 and 2024, May 30th highs ranged from 26 to 33 degrees Celsius, with most years clustering around 30–32 degrees. The 0% crowd probability currently assigned suggests either extreme confidence in a specific range or insufficient market participation. Comparable late-May weather patterns in southern China indicate that temperatures exceeding 35 degrees remain possible but uncommon for this particular date, occurring roughly once per decade.

From a regulatory standpoint, this weather market operates under different frameworks depending on trader jurisdiction. The German GlüStV classifies prediction markets as gambling products requiring state licensing; UK traders face no specific KYC requirement for positions under £1,500, though operators must comply with Gambling Commission oversight. US CFTC reach extends to US persons trading on offshore platforms, though weather derivatives themselves sit in a regulatory grey zone distinct from commodity futures. Traders should verify their own jurisdiction's treatment before positioning, as tax treatment of settlement winnings varies significantly between territories.

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Tax UK, which mirrors the Polymarket order book directly.

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.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Tax UK, 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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What does it cost to trade on Polymarket Tax UK?

Zero. Polymarket Tax UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.