Highest temperature in Shenzhen on May 27?

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Market context

Shenzhen's weather on 27 May 2026 will be shaped by the onset of the pre-monsoon season in southern China. Late May typically marks the transition toward warmer, more humid conditions as the southwest monsoon begins to establish itself across the region. The city sits on the Pearl River Delta coast, where sea breezes moderate temperatures but daytime highs in late May routinely climb into the low-to-mid 30s Celsius. The settlement window closes at midday local time, meaning only morning and early afternoon readings will count toward resolution.

Historical records from Shenzhen Bao'an International Airport show that May temperatures have ranged from highs of 31–35°C in recent years, with occasional spikes toward 36°C during particularly warm years. The 0% implied probability suggests the market has collapsed around a specific temperature band, likely reflecting consensus that the day will fall within a narrow, well-established range. This consensus may undervalue tail-risk scenarios: unusual heat waves do occur in May, particularly if a high-pressure system stalls over the region, and the airport station's exposed location can amplify afternoon readings compared to urban areas.

Traders should monitor mid-May weather pattern forecasts from the China Meteorological Administration and track any unusual atmospheric pressure systems developing over Southeast Asia in the weeks prior. The monsoon's exact timing and intensity remain the primary variable; an early, vigorous onset could suppress temperatures, whilst a delayed transition might allow hotter air masses to dominate. Real-time satellite imagery and upper-air data become most relevant in the final week before settlement.

Methodology

We track Highest temperature in Shenzhen on May 27? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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

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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.

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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.