Highest temperature in Hong Kong on June 17?

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Market context

The Hong Kong Observatory will record the daily maximum temperature on 17 June 2026, with settlement depending on the published "Absolute Daily Max" figure in Celsius to one decimal place. The crowd currently assigns 0% probability to the market resolving, suggesting either extreme confidence in a particular temperature band or genuine uncertainty about which range will contain the day's high.

Hong Kong's June climate sits firmly within the pre-monsoon season, when daily maxima typically cluster between 29–33°C. Historical data from the Observatory shows that temperatures exceeding 35°C occur sporadically in June, whilst readings below 28°C are uncommon. The 0% implied probability across all ranges indicates the market may lack sufficient liquidity or trader conviction to establish meaningful odds, rather than reflecting meteorological consensus. Comparable June days from recent years provide the most reliable anchor: the Observatory's climate records show considerable day-to-day variation even within the same month, with afternoon thunderstorms capable of suppressing maxima by several degrees.

Traders should monitor seasonal weather patterns emerging in May and early June 2026, particularly the timing and intensity of the southwest monsoon onset. The Hong Kong Observatory publishes extended forecasts roughly two weeks ahead; any signals of an unusually hot or cool pattern would shift expectations. Humidity levels and cloud cover on the day itself will prove decisive, as overcast conditions typical of the monsoon transition can suppress temperatures by 3–5°C compared to clear-sky scenarios. Settlement hinges entirely on the Observatory's final published data, available through their Daily Extract records once the observation period closes.

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 Who Will Win 2026, 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 Who Will Win 2026, 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.

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 2026 triggers a quick verification flow that finishes in minutes.