Highest temperature in Hong Kong on July 6?

Platform comparison

Market context

The Hong Kong Observatory is forecasting a daily maximum near 32°C for 6 July 2026, with multi-model consensus suggesting temperatures will be normal to above-normal for the season. This real-world outlook directly shapes the Polymarket contract, where the leading outcome of "32°C" currently commands 41% of the volume, while the "YES" side for any temperature above 35°C sits at 0% probability. Traders on Polygon are trading conditional tokens in USDC, betting on whether the official "Absolute Daily Max" recorded in the Daily Extract will exceed the threshold, with the settlement window closing at 12:00 UTC on 6 July.

Historical July data frames this 0% probability as rational rather than speculative. In recent years, Hong Kong’s July highs have averaged 29.6°C to 29.7°C, with the absolute record rarely breaching 35°C unless under extreme typhoon or heatwave conditions. The current seasonal forecast from the Hong Kong Observatory explicitly states that July–September 2026 will see normal to above-normal temperatures, yet even "above-normal" in this region typically caps around 33–34°C. This aligns with the market’s 41% weighting on 32°C, making the 0% YES probability for higher extremes a reflection of climatic ceilings rather than market inefficiency.

Traders should monitor the Hong Kong Observatory’s Daily Extract release schedule, which finalises the official "Absolute Daily Max" value to one decimal place. The catalyst is the 6 July 2026 data publication, expected shortly after midnight local time, which will trigger the contract resolution. Recent forecasts from the Observatory, cited in their seasonal outlook, point to southeast flow driving overnight lows near 27–28°C, but daytime highs remain constrained by maritime influence. No sudden announcements are expected, but any deviation in the 6 July 06:00 UTC forecast—such as a sudden shift to northerly flow or cloud cover—could alter the final max temperature and shift conditional token prices before the 12:00 UTC settlement deadline.

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Methodology

This page reviews Highest temperature in Hong Kong on July 6? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Legit?, which mirrors the Polymarket order book at 0% fees.

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 Legit?. 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.

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?

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

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.