Highest temperature in Hong Kong on May 26?

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Market context

The Hong Kong Observatory will record the highest temperature in Hong Kong on 26 May 2026, measured in degrees Celsius. The market currently shows 0% implied probability across all temperature ranges, suggesting either insufficient liquidity or that traders are awaiting historical data and seasonal patterns to establish baseline expectations. May sits in Hong Kong's late spring period, typically warm but not yet at peak summer heat; average daily highs in late May range between 28–31°C, with extremes occasionally reaching 33–35°C under particular atmospheric conditions.

Historical records from the Observatory show considerable variability in May temperatures across different years. The month can produce days in the low 20s during cooler spells or exceed 34°C during heat waves driven by subtropical high-pressure systems. Recent decades have seen a gradual warming trend, though individual daily maxima remain heavily dependent on wind patterns, cloud cover, and whether tropical systems approach the region. Without comparable data from May 2025 or earlier years immediately accessible, the market lacks anchoring points that would typically narrow probability distributions.

Traders should monitor the Hong Kong Observatory's seasonal forecasts and any tropical cyclone activity tracking towards the western Pacific in late May 2026. The settlement window closes at 12:00 UTC on 26 May, requiring the Observatory's "Daily Extract" data to be finalised before resolution occurs. Current 0% readings across all ranges suggest the market awaits either initial price discovery or clarification on which temperature bands are actually available for trading, rather than reflecting genuine consensus that no specific outcome is possible.

Methodology

This page reviews Highest temperature in Hong Kong on May 26? 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 Who Will Win — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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 Who Will Win, 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?

Who Will Win 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.

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.

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, Who Will Win triggers a quick verification flow that finishes in minutes.