Highest temperature in Hong Kong on June 9?

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Market context

The Hong Kong Observatory will record the highest temperature in Hong Kong on 9 June 2026, with settlement determined by the official daily maximum reading published in the Observatory's Daily Extract. The 2% crowd probability suggests traders expect an unusually cool day relative to historical norms for early June.

Hong Kong's June temperatures typically range between 28–32°C, with absolute daily maxima frequently exceeding 33°C during the early summer season. Historical data from the Observatory shows that temperatures below 28°C on any June day are rare, occurring in fewer than 5% of recorded instances. The current 2% probability implies the market is pricing in an exceptionally cool day—likely driven by expectations of significant rainfall or unusual weather systems. Comparable June dates over the past decade show consistent clustering around 30–34°C, making extreme outliers statistically uncommon but not unprecedented during monsoon transitions.

Traders should monitor tropical cyclone forecasts and monsoon activity in the weeks preceding 9 June, as these remain the primary catalysts for below-average temperatures in Hong Kong during early summer. The Hong Kong Observatory's seasonal outlooks, typically issued in May, will provide guidance on expected pressure systems and rainfall patterns. Additionally, El Niño or La Niña conditions affecting the Western Pacific basin can influence regional weather patterns; current climate indices should be tracked through June 2026. Real-time weather models become increasingly reliable within two weeks of the settlement date, offering traders a clearer picture of atmospheric conditions as the date approaches.

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Hong Kong on June 9? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

Where can I trade this market with the lowest fees?

On Trump Prediction, 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?

Trump Prediction 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 does it cost to trade on Trump Prediction?

Zero. Trump Prediction routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.