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Hong Kong ObservatoryHome Affairs Department

Hong Kong records hottest day in history at 36.9C, highest since 1884; very hot weather warning in effect as heat shelters open

Hong Kong recorded its hottest day in history at 36.9°C on August 9, the highest since records began in 1884, prompting the Hong Kong Observatory to issue a "very hot weather warning" and open 19 community centers as temporary heat shelters for residents seeking refuge from the extreme heat.

AsiaOne AsiaOne10 August 2026 · 02:15 UTC
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Hong Kong experienced its hottest day on record, reaching 36.9°C on August 9, the highest since 1884. The Hong Kong Observatory attributed the extreme heat to subsiding air and issued a "very hot weather warning" for the second consecutive day, advising residents to limit outdoor activities.1245

In response to the soaring temperatures, the Home Affairs Department opened 19 community halls and centers as temporary heat shelters, providing refuge for those affected by the heat. These facilities will remain operational while the warning is in effect, offering beds and a place to sleep for those in need.3

Temperatures are expected to stay high until Wednesday or Thursday, with some areas potentially exceeding 37°C. The observatory's warning highlights the urgency for residents to take precautions against the extreme weather conditions, as the city grapples with the impacts of climate change and rising temperatures.6

"The heat is a result of subsiding air in the periphery of ."

Key Insight
“The observatory issued a 'very hot weather warning' for a second consecutive day at 6.45am Monday, urging residents to avoid prolonged outdoor activities. The Home Affairs Department opened 19 community halls as heat shelters, with temperatures expected to top 37C in some areas through Thursday.”
CuriousCats studied:
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AsiaOneAsiaOne
“Hong Kong recorded its highest temperature recorded of 36.9 deg C at 3.30pm on Sunday (Aug 9), the highest since 1884 when records began, according to the Hong Kong Observatory.”
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