Highest temperature in Hong Kong on June 27?

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Market context

The real-world event this market tracks is the highest temperature recorded by the Hong Kong Observatory on 27 June 2026, measured in degrees Celsius to one decimal place. Current crowd-implied probability for a "YES" outcome sits at 0%, yet historical data and seasonal forecasts suggest above-normal temperatures for June–August 2026 in Hong Kong, with daily highs expected between 31°C and 34°C [2][3]. Recent records show Hong Kong hit 34.6°C on 24 June 2026, its hottest day of the year so far, reinforcing that extreme heat is not an outlier but a recurring pattern in late June [7][9].

Traders should monitor the Hong Kong Observatory’s "Daily Extract" releases, which finalise the "Absolute Daily Max" data after 12:00 UTC on the settlement date [8]. Key catalysts include updated ENSO status reports and climate model forecasts, which currently indicate above-normal temperatures for the region [2]. A recent report from the South China Morning Post confirms that extreme heat warnings have been issued as temperatures continue to surge past 34°C, suggesting volatility in the final reading [9].

Regulatory accessibility hinges on jurisdictional frameworks: German GlüStV may restrict unlicensed betting platforms, while US CFTC reach extends to prediction markets involving US participants. The "no-KYC up to $1,500" feature allows traders in compliant jurisdictions to access this market without identity verification, enhancing liquidity for those under $1,500 exposure thresholds. This specific market remains accessible only where local laws permit unverified participation, and data finalisation is mandatory before resolution [1].

Sources: 1 · 2 · 3 · 4 · 5

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 KYC UK, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket KYC 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.

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.

Do I need to KYC for this market?

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