Hong Kong Observatory - Yesterday's Weather and Radiation Level
  • Yesterday's Weather and Radiation Level

Hong Kong Observatory:
Maximum Air Temperature: 21.2°C
Minimum Air Temperature: 17.2°C
Grass Minimum Temperature: 15.3°C
Relative Humidity: 66 - 80%
Rainfall: 0 mm

Total rainfall since 1st January: 2152.3 mm
Against an average of 2383.2 mm
Bulletin updated at 00:15 HKT 16/ Dec /2018
Other Stations Min Max
King's Park 16.4°C 23.1°C
Ta Kwu Ling 14.4°C 23.0°C
Wong Chuk Hang 17.0°C 22.9°C
Lau Fau Shan 13.9°C 21.4°C
Tai Po 14.4°C 20.7°C
Sha Tin 16.0°C 22.0°C
Tuen Mun 14.9°C 23.1°C
Tseung Kwan O 15.5°C 22.5°C
Sai Kung 16.3°C 20.4°C
Cheung Chau 16.0°C 23.4°C
Chek Lap Kok 16.1°C 21.3°C
Tsing Yi 16.8°C 23.2°C
Shek Kong 14.7°C 23.7°C
Tsuen Wan Ho Koon 14.8°C 23.2°C
Tsuen Wan Shing Mun Valley 16.4°C 24.2°C
Hong Kong Park 17.3°C 22.8°C
Shau Kei Wan 16.1°C 21.8°C
Kowloon City 16.0°C 24.3°C
Happy Valley 17.3°C 23.2°C
Wong Tai Sin 16.6°C 23.7°C
Stanley 17.0°C 21.2°C
Kwun Tong 16.3°C 21.8°C
Sham Shui Po 16.3°C 24.0°C
Kai Tak Runway Park 16.9°C 21.9°C
Yuen Long Park 14.4°C 23.1°C
Tai Mei Tuk 15.2°C 23.1°C
Duration of Sunshine (King's Park): 6.6 H

The mean UV Index recorded at King's Park yesterday was 2, the UV intensity was low.

The maximum UV Index for yesterday was 6.

Yesterday's (15 Dec) average ambient gamma radiation dose rate taken outdoors in Hong Kong ranged from 0.09 to 0.15 microsievert per hour. These are within the normal range of fluctuation of the background radiation level in Hong Kong (See Note).

The average dose rates measured at the radiation monitoring stations over various parts of the territory were as follows :
Station Yesterday's average
King's Park 0.15
Ping Chau 0.09
Tap Mun 0.09
Kat O 0.10
Yuen Ng Fan 0.12
Tai Mei Tuk 0.12
Sha Tau Kok 0.11
Kwun Tong 0.13
Sai Wan Ho 0.10
Tsim Bei Tsui 0.13
Cape D'Aguilar 0.13
Chek Lap Kok 0.15


1. From readings taken at various locations in Hong Kong in the past, the hourly mean ambient gamma radiation dose rate may vary between 0.06 and 0.3 microsievert per hour. (1 microsievert = 0.000001 sievert = 0.001 millisievert)
2. Temporal variations are generally caused by changes in meteorological conditions such as rainfall, wind and barometric pressure.
3. Spatial variations are generally caused by differences in the radioactive content of local rock and soil.
4. The data displayed is provisional. Only limited data validation has been carried out.