Pronóstico: Highest temperature in Hong Kong on June 27?

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Market context

Hong Kong is bracing for its hottest day of June 2026, with the Hong Kong Observatory forecasting above-normal temperatures for the coming summer months. The market currently implies a 0% chance that the highest temperature on 27 June will fall within the lowest resolution range, reflecting strong consensus that extreme heat is imminent. Historical data shows that June in Hong Kong typically sees daily highs between 29°C and 33°C, with the warmest day of the month often occurring around 20 June, averaging 29.7°C[9]. Recent records confirm this trend: Hong Kong hit 34.6°C on 15 June, marking the hottest day of the year so far[6], while February 2026 was already unseasonably warm with a peak of 26.9°C[1].

Traders should monitor the Hong Kong Observatory’s daily weather extracts, particularly the “Absolute Daily Max” figure released after 27 June, which will determine the market’s resolution. The Observatory has already warned of extreme heat in the New Territories, with temperatures expected to reach 37°C on Thursday and Friday[5]. Seasonal forecasts indicate June–August 2026 will be above-normal in temperature, driven by ENSO conditions and climate model projections[2]. AccuWeather’s June forecast for Hong Kong shows daily highs ranging from 88°F to 92°F (31.1°C–33.3°C), with an average high of 89°F (31.7°C)[3]. Any deviation from these projections—such as sudden monsoon shifts or rainfall spikes—could alter the outcome, but current data strongly supports high temperatures.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

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FAQ

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On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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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.

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