Highest temperature in Hong Kong on June 27?

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Market context

The Hong Kong Observatory will record the absolute daily maximum temperature in degrees Celsius for 27 June 2026, resolving a prediction market where the crowd currently assigns zero probability to any outcome exceeding the baseline. Historical data frames this near-certainty of moderate heat: June typically sees highs between 26°C and 31°C, with an average of 31°C, while the official seasonal forecast for June–August 2026 predicts above-normal temperatures across the region[2][3][4]. Recent 9-day forecasts confirm this pattern, showing daily ranges of 27–31°C with sea surface temperatures at 26°C, suggesting the atmosphere is primed for consistent, humid warmth rather than extreme spikes[5].

Traders must monitor the Hong Kong Observatory’s finalised “Daily Extract” for the specific date, as the market cannot resolve until this data is officially published[1]. The immediate catalyst is the 9-day forecast update, which currently indicates a maximum of 32°C and a 60% chance of rain, hinting that sudden downpours could suppress peak temperatures despite the above-normal trend[5][8]. Additionally, the onset of typhoon season and the potential for extreme heat warnings in the New Territories—where temperatures recently hit 37°C—remain critical variables that could shift the resolution range if a storm system or heat dome develops before the settlement window[2][9].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Is this market available outside the US?

Champions League 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'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 Champions League Prediction?

Zero. Champions League Prediction 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, Champions League Prediction triggers a quick verification flow that finishes in minutes.