Highest temperature in Hong Kong on July 14?

Platform comparison

Market context

On 14 July 2026, the Hong Kong Observatory will record the day's maximum temperature in degrees Celsius. Polymarket currently prices all temperature ranges at 0% implied probability, reflecting the contract's settlement window closing at 12:00 UTC on that date—a hard deadline that leaves no room for late data publication or revision. The Observatory publishes daily temperature extracts with a lag; traders cannot settle positions until the "Absolute Daily Max" figure appears in the official Daily Extract dataset, which typically arrives within 24–48 hours of observation.

Hong Kong's July climate is remarkably consistent. Historical records show the month averages a daily maximum of 32–33°C, with extreme readings rarely exceeding 35°C or falling below 30°C. The 2015 heatwave pushed temperatures to 36.1°C on 22 July, and 2023 saw similar spikes. These outliers frame the plausible range: most outcomes cluster between 31–34°C, with tail probabilities assigned to sub-30°C (monsoon disruption) or above-35°C (heat dome conditions). The 0% crowd pricing reflects genuine uncertainty about which specific range will resolve, not doubt that a temperature will be recorded.

Traders should monitor tropical cyclone forecasts and upper-air patterns in early July 2026. The South China Sea typhoon season peaks in August but can produce moisture surges and cloud cover in mid-July, suppressing afternoon highs. Conversely, a high-pressure system anchored over southern China typically drives the hottest readings. The Observatory's seasonal outlook, published monthly, will signal whether anomalous heat or cooler-than-normal conditions are expected. Settlement depends entirely on the Observatory's publication schedule; any delays in the Daily Extract release will postpone resolution beyond the market's nominal close.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Scam?. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.