Highest temperature in Hong Kong on June 24?

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Market context

Hong Kong is bracing for a June 2026 that the Hong Kong Observatory forecasts as significantly above normal in temperature, with 2026 potentially ranking among the city’s hottest years on record[2][4]. This climatic backdrop directly explains the current crowd-implied probability of 0% for any temperature range below the historical extremes, as traders recognise that even a modest June day will likely exceed 30°C.

Historically, Hong Kong’s June highs have consistently breached 33°C, with 2025 setting a new absolute maximum of 35.6°C for the month[3]. Recent data confirms this trend, as the city recorded its hottest day of 2026 so far at 34.6°C in early June, accompanied by hail warnings due to intense convection[7]. Given that the average June high is 30°C and forecasts suggest daily peaks between 31°C and 33°C (noting the AccuWeather figures likely contain a unit error and should be read as Celsius), the market is leaning heavily on the catalyst of sustained El Niño development expected in the second half of the year, which will amplify heat[4].

Traders should monitor the Hong Kong Observatory’s daily extracts for the finalized “Absolute Daily Max” once published, as the market cannot resolve until this data is official[2]. Key upcoming catalysts include the tropical cyclone season, which is predicted to start in June or later, potentially bringing cooling rainstorms that could briefly lower temperatures, though the overall trend remains upward[4]. The primary driver for the 0% probability is the consensus that no temperature range below 34°C will contain the day’s peak, with the HKO already warning of extreme heat hitting 37°C in the New Territories on recent days[5].

Sources: 1 · 2 · 3 · 4 · 5

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 24? 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 Election Predictions 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.

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.

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.