Highest temperature in Hong Kong on June 8?

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Market context

On 8 June 2026, the Hong Kong Observatory will record the day's maximum temperature in degrees Celsius, and this market settles to whichever range bracket contains that single data point. Polymarket currently prices all outcome brackets at 0%, a reflection of genuine uncertainty rather than market dysfunction—the settlement window closes at midday UTC on the resolution date itself, leaving minimal time for traders to react once the Observatory publishes its daily extract. The contract lives on Polygon as conditional tokens denominated in USDC, with settlement conditional on the Observatory's official "Absolute Daily Max" figure appearing in their climate database.

Hong Kong's June temperatures cluster predictably around 28–32°C, with historical daily maxima rarely exceeding 34°C during early June. The Observatory's 30-year climate normals show a mean daily maximum of approximately 29°C for this period, though individual years vary by several degrees depending on monsoon positioning and tropical cyclone activity. June marks the transition into the southwest monsoon season, when moisture-laden air masses can suppress peak temperatures despite lengthening daylight hours.

Traders monitoring this contract should track the Western Pacific typhoon forecast track and any tropical cyclone warnings issued by the Regional Specialized Meteorological Centre in the weeks preceding settlement. The Observatory publishes preliminary daily data within hours of observation, though final figures may shift marginally when incorporated into the official climate extract. Unusual heat events in late May across southern China could signal atmospheric conditions favouring higher June temperatures, though such regional patterns remain imperfect predictors for a single day's outcome.

Methodology

This page reviews Highest temperature in Hong Kong on June 8? 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 Polymarket UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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

Is this market available outside the US?

Polymarket UK 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.

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 UK?

Zero. Polymarket UK 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 UK triggers a quick verification flow that finishes in minutes.