Highest temperature in Hong Kong on May 27?

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Market context

The Hong Kong Observatory will record the daily maximum temperature on 27 May 2026, measured in degrees Celsius and finalised in their official Daily Extract dataset. Polymarket currently prices all temperature ranges at 0% YES, reflecting the market's nascent state roughly eighteen months before settlement. The contract will remain unresolved until the Observatory publishes verified data for that specific date, creating a hard deadline at the settlement window close on 27 May at 12:00 UTC.

Hong Kong's May temperatures show consistent patterns across decades of Observatory records. Historical May maximums typically fall between 28°C and 33°C, with the month marking the transition into the pre-monsoon season. Extreme heat days above 34°C occur but remain uncommon for May specifically, though the city has recorded temperatures exceeding 36°C in other months. The 0% pricing across all ranges suggests traders are awaiting clearer seasonal forecasts or simply haven't yet engaged with this contract type.

Traders should monitor the Hong Kong Observatory's seasonal outlooks, typically released quarterly, which will refine expectations for late May conditions. The El Niño Southern Oscillation (ENSO) status in early 2026 will influence regional temperature patterns; the World Meteorological Organisation updates ENSO forecasts monthly. Additionally, any significant atmospheric systems developing in late April or early May—tropical cyclones or unusual high-pressure systems—could shift the probability distribution meaningfully. The contract's reliance on a single, publicly verifiable data source eliminates ambiguity around settlement once the Observatory publishes its Daily Extract.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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 Legit?, 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?

Polymarket Legit? 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 does it cost to trade on Polymarket Legit??

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

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Legit? triggers a quick verification flow that finishes in 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.