Highest temperature in Hong Kong on July 5?

Platform comparison

Market context

Hong Kong is set to experience its peak summer heat on 5 July 2026, with the Hong Kong Observatory tracking the absolute daily maximum temperature in degrees Celsius. The current crowd-implied probability of 0% for a specific high-temperature range suggests traders believe the outcome will fall outside the most likely bracket, despite forecasts indicating daily highs between 30°C and 35°C (87°F to 95°F) for July 2026[1].

Historical data from the Hong Kong Observatory shows that July maximum temperatures in Hong Kong typically cluster between 31°C and 33°C, with the mean maximum for July 2018 recorded at 31.8°C[7]. The seasonal forecast for July–September 2026 predicts normal to above-normal temperatures, influenced by the latest ENSO status and climate models[2]. This upward trend in temperature expectations frames the current 0% probability as potentially misaligned with the likelihood of above-average heat, given the city’s recent warming pattern.

Traders should monitor the Hong Kong Observatory’s finalised “Daily Extract” for 5 July 2026, which will publish the official “Absolute Daily Max (deg. C)” once data is confirmed[7]. Any announcements regarding extreme heat warnings or changes in the ENSO phase could act as catalysts, shifting the temperature range significantly. The resolution source measures temperatures to one decimal place, so even minor fluctuations will determine the outcome, making real-time updates from the Observatory critical for accurate positioning[7].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Sports-specific comparison page for Highest temperature in Hong Kong on July 5?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

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