Highest temperature in Hong Kong on June 27?

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Market context

The Hong Kong Observatory will publish the absolute daily maximum temperature recorded on 27 June 2026, a figure that determines the outcome of a prediction market where the crowd currently assigns zero probability to any specific range. This real-world event hinges on finalized data from the Observatory’s Daily Extract, which is only released after the specified date’s measurements are verified and archived.

Historically, late June in Hong Kong frequently sees peak temperatures exceeding 34°C, with the Observatory recording 34.4°C on 27 June 2024, the highest of that month [10]. Recent years show similar patterns, including 34.6°C on the hottest day of 2024 so far [4], while the 2026 seasonal forecast explicitly predicts above-normal temperatures for June through August [2]. These comparable cases suggest the current 0% crowd-implied probability may be misaligned with typical climatic behaviour, as June 27 is often among the warmest days of the month [7].

Traders should monitor the Observatory’s official data release schedule, as the market cannot resolve until the Daily Extract is finalized. No political debates, campaign-finance disclosures, or polling shifts influence this weather-based outcome; the sole catalyst is the publication of the verified temperature figure. The Hong Kong Observatory’s seasonal guidance confirms above-normal heat is expected, making the timing of the data release the critical dependency for settlement [2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Hong Kong on June 27? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. Election Predictions UK routes every trade through to Polymarket — at 0% fees.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

Is this market available outside the US?

Election Predictions 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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Election Predictions 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.