Highest temperature in Hong Kong on July 15?

Platform comparison

Market context

Hong Kong’s highest temperature on 15 July 2026 will be determined by the Hong Kong Observatory’s recorded absolute daily maximum in degrees Celsius, resolved once the official Daily Extract is published. With the crowd-implied probability for any specific range sitting at 0% YES, the market currently treats all outcomes as equally uncertain, reflecting the absence of finalized data for this future date.

Historically, mid-July in Hong Kong sees peak temperatures typically between 31°C and 35°C, with the Observatory recording a 36.1°C high on 15 July 2018 and a 34.8°C peak on the same date in 2023. These comparable cases suggest the 0% implied probability is a mechanical artefact of the market’s early stage rather than a signal of extreme outlier risk; value likely sits in the 33–35°C band, where consensus has not yet formed, while contrarian angles might favour the upper 35–36°C range if tropical cyclone activity or a strong subtropical ridge develops.

Traders should monitor the Hong Kong Observatory’s weekly climate bulletins and the Japan Meteorological Agency’s tropical cyclone advisories, as an approaching system could suppress temperatures, whereas a persistent high-pressure cell may push them higher. The Hong Kong Observatory’s climate page confirms that Daily Extracts are finalized within days after the observation date, meaning the settlement dependency is purely on this publication schedule, with no external announcements required beyond the routine data release [1].

Methodology

We track Highest temperature in Hong Kong on July 15? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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 Who Will Win 2026. 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 does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.