Highest temperature in Hong Kong on June 12?

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Market context

On 12 June 2026, the Hong Kong Observatory will record the day's highest temperature in degrees Celsius. This market resolves to whichever temperature band contains that single daily maximum reading, published in the Observatory's official Daily Extract once the date has passed and data finalised. The settlement window closes at midday UTC on that date, though resolution itself depends on Observatory publication timing rather than market closure.

Hong Kong's June temperatures cluster around 28–32°C historically, with occasional peaks above 33°C during heat waves or ahead of monsoon shifts. The 0% crowd probability reflects either extreme confidence in a specific narrow range or sparse trading activity; comparable weather markets on established platforms show similar clustering when historical variance is well-understood and the event lies months ahead. June typically marks the transition into the southwest monsoon season, which moderates afternoon peaks through cloud cover and convection, though urban heat-island effects in central Hong Kong can push readings higher than surrounding areas.

Traders should monitor the Observatory's seasonal forecasts (issued monthly) and any heat-wave advisories from late May onwards, as these signal atmospheric conditions likely to drive the 12 June maximum. The UK Met Office and regional meteorological services publish extended outlooks 10–14 days before the event; these become actionable catalysts as June approaches. Regulatory access to this market depends on jurisdiction: German traders face GlüStV restrictions on prediction markets unless the operator holds specific licensing; US participants encounter CFTC oversight of derivatives, though no-KYC thresholds up to $1,500 notional may permit smaller positions without identity verification, subject to platform policy and applicable law.

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 Tax 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 Tax 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.

Is this market available outside the US?

Polymarket Tax 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.

What does it cost to trade on Polymarket Tax UK?

Zero. Polymarket Tax 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 Tax UK 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.