Highest temperature in Hong Kong on June 12?

Platform comparison

Active sub-markets

Market context

Hong Kong's daily maximum temperature on 12 June 2026 will be recorded by the Hong Kong Observatory and published in their Daily Extract dataset. The settlement hinges on the Observatory's official "Absolute Daily Max (deg. C)" figure to one decimal place, accessible through their Climate Information Services portal. This is a straightforward instrumental reading with no discretionary interpretation—the Observatory's automated weather stations and manual verification protocols produce a single, definitive number each day.

June temperatures in Hong Kong cluster between 28–32°C on average, though extremes vary considerably year to year. Historical data shows daily maxima in early-to-mid June ranging from 26°C in cooler years to 34–35°C during heat waves. The 0% crowd probability suggests traders are either awaiting clearer seasonal forecasts or treating this as a calibration exercise; with settlement eighteen months away, long-range meteorological models carry substantial uncertainty. Comparable markets on Hong Kong Observatory data have resolved cleanly once the Daily Extract publishes, typically within 48 hours of the measurement date.

A trader automating exposure to this market should monitor the Observatory's seasonal outlooks (issued quarterly) and track the El Niño/La Niña cycle, which influences regional temperature patterns. The South China Sea monsoon transition in June also affects daily volatility. Programmatically, you'd want to set conditional orders keyed to the Observatory's publication schedule rather than relying on manual settlement—the data feed is reliable and timestamped. Watch for any Observatory maintenance notices that might delay the Daily Extract release, though this rarely affects historical data backfills.

Methodology

We track Highest temperature in Hong Kong on June 12? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Review 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.