Highest temperature in Hong Kong on June 6?

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Market context

On 6 June 2026, the Hong Kong Observatory will record a daily maximum temperature in Celsius, which this market will resolve against once the official data publishes in their Daily Extract dataset. The settlement window closes at noon UTC that day, though resolution may be delayed pending the Observatory's publication schedule. Temperature readings are recorded to one decimal place, creating distinct resolution bands that traders must map precisely to avoid ambiguity at cluster boundaries.

Hong Kong's June climate sits at the threshold between late spring and early monsoon onset. Historical daily maxima for early June cluster between 29–32°C, with occasional excursions toward 33°C during heat waves. The 0% crowd probability suggests either extreme confidence in a specific temperature band or insufficient liquidity to establish meaningful odds. Comparable markets on regional weather data show that official publication delays of 24–48 hours are routine, making programmatic settlement automation unreliable without built-in buffer logic. Traders automating conditional orders against this market should account for asynchronous data feeds from the Observatory's climate portal.

Catalysts affecting June 2026 temperatures include the onset timing of the southwest monsoon (typically May–June transition) and any anomalous high-pressure systems tracking across southern China. The Hong Kong Observatory publishes seasonal outlooks quarterly; their March 2026 forecast will be the most recent guidance available to traders before settlement. Real-time monitoring of synoptic charts and upper-air patterns in late May provides the strongest signal for temperature clustering, though such granular forecasting remains probabilistically uncertain beyond ten days.

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 Review 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 Review 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'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.

What does it cost to trade on Polymarket Review UK?

Zero. Polymarket Review 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 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.