Hong Kong Hits 13.2°C: Coldest Autumn Day Yet

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Hong Kong experienced its coldest autumn temperature to date on Wednesday, with the Hong Kong Observatory recording 13.2 degrees Celsius at its headquarters in Tsim Sha Tsui around 6 a.m. The cold snap was attributed to an intense northeast monsoon, which has significantly lowered temperatures across the region.

The Hong Kong Observatory (HKO) reported that temperatures were about one to two degrees lower in parts of the New Territories. On Tai Mo Shan, Hong Kong’s highest peak, the mercury dropped to 3.2 degrees Celsius at 6 a.m., according to the Observatory. This marked a notable drop in temperature compared to previous days.

The weather conditions have also led to extremely dry air. At 10:30 a.m., relative humidity was recorded at 35 per cent, and the Red Fire Danger warning signal was in effect, indicating an extreme fire risk. This level of dryness is unusual for this time of year and has raised concerns among local authorities.

The Observatory predicted “mainly cloudy and cool” weather on Wednesday, with sunny intervals during the day. A strong monsoon signal remains in force, but winds are expected to moderate later in the day. This suggests that while the cold weather will persist, it may not be as severe as the previous days.

Tse Shuk-mei, the Observatory’s acting assistant director, made comments on an RTHK programme on Tuesday regarding the winter temperatures in Hong Kong. She stated that temperatures this winter would likely range from “normal to above-normal.” According to her, there has been a long-term trend of increasing winter temperatures in the city due to global warming.

Tse also mentioned that Hong Kong is expected to experience between nine to 17 cold weather days this winter. During these periods, temperatures are projected to fall to 12 degrees Celsius or below. This prediction highlights the potential for prolonged periods of cooler weather, despite the overall warming trend observed in recent years.

Key Weather Details

  • Temperature Records: The coldest autumn temperature so far was recorded at 13.2 degrees Celsius in Tsim Sha Tsui.
  • Impact of Monsoon: An intense northeast monsoon caused temperatures to drop by one to two degrees in some areas.
  • High Altitude Temperatures: On Tai Mo Shan, the temperature reached 3.2 degrees Celsius at 6 a.m.
  • Dry Conditions: Relative humidity was at 35 per cent, with a Red Fire Danger warning in place.
  • Weather Forecast: The Observatory predicts mainly cloudy and cool conditions with sunny intervals during the day.
  • Monsoon Signal: A strong monsoon signal is still active, though wind speeds are expected to decrease later.

Outlook for Winter

  • Temperature Trends: Winter temperatures in Hong Kong are expected to be normal to above-normal.
  • Global Warming Influence: There has been a long-term increase in winter temperatures due to global warming.
  • Cold Weather Days: Between nine to 17 cold weather days are anticipated, with temperatures dropping to 12 degrees Celsius or below.

These developments underscore the importance of monitoring weather patterns and preparing for potential impacts, especially given the combination of cold temperatures and dry conditions. Local authorities and residents are advised to stay informed and take necessary precautions.

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