Highest temperature in Hong Kong on June 25?

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Hong Kong is bracing for another surge of very hot weather today as an anticyclone aloft continues to dominate, pushing daytime highs to 33°C with isolated thunderstorms expected later [4][5]. The crowd-implied 0% probability for a specific temperature range on 25 June 2026 appears to stem from a misunderstanding of the season, as June historically delivers the region's peak summer heat with average highs around 31°C and frequent days exceeding 33°C [2][6]. In comparable years, June 25 has consistently recorded temperatures between 29°C and 34°C, making the current zero probability statistically anomalous given the long-term warming trend and the forecast of above-normal temperatures for June through August [3][7].

Traders should monitor the Hong Kong Observatory’s 9-day forecast updates, particularly the weakening of the anticyclone and the arrival of a low-pressure trough that may bring showers and thunderstorms over the next couple of days [4]. The development of a moderate-to-strong El Niño event in the equatorial Pacific is a critical catalyst, as it is expected to persist through the end of 2026 and further elevate regional temperatures [3]. Recent data from the Observatory confirms sea surface temperatures at North Point reached 26°C this morning, reinforcing the heat potential, while the seasonal forecast explicitly notes a high chance of normal to above-normal temperatures for the coming months [3][4]. Any sudden shift in the trough’s intensity or the onset of Tropical Cyclone Mekkhala’s influence could alter the daily maximum, so real-time bulletins updated at 04:50 and 07:50 HKT are essential for accurate positioning [4].

Sources: 1 · 2 · 3 · 4 · 5

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