Highest temperature in Hong Kong on May 29?

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Market context

The Hong Kong Observatory will record the highest temperature in degrees Celsius on 29 May 2026, with settlement determined by the absolute daily maximum figure published in their Daily Extract dataset. The crowd currently assigns zero probability to any outcome, suggesting either minimal trading activity or genuine uncertainty about which temperature band will occur.

Hong Kong's May temperatures sit firmly in late-spring territory, with historical daily maxima typically ranging between 28°C and 32°C during this period. The Observatory's 30-year climate normals place the average daily maximum for late May around 30–31°C, though individual years regularly deviate by 2–3 degrees in either direction. Extreme heat events pushing above 34°C are rare but not unprecedented; conversely, cooler southwesterly flows can occasionally suppress maxima to the mid-to-high 20s. The absence of crowd probability suggests traders may be waiting for seasonal forecasts or treating this as a low-liquidity niche market rather than reflecting genuine predictive difficulty.

Catalysts shaping the outcome include the East Asian monsoon transition pattern and any tropical cyclone activity in the western Pacific during late May. The Hong Kong Observatory publishes monthly seasonal outlooks and updates its extended forecasts roughly two weeks before the target date, providing traders with increasingly refined guidance on whether the month will trend warmer or cooler than climatological norms. Current global sea-surface temperature anomalies and the state of the subtropical ridge will ultimately determine whether 29 May breaks toward the upper or lower end of the typical range.

Methodology

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FAQ

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