Weather Report > Yesterday's Weather and Radiation Level
Bulletin updated at 00:15 HKT 16/ Jan /2018

Yesterday's Weather and Radiation Level

Hong Kong Observatory:
Maximum Air Temperature: 18.2°C
Minimum Air Temperature: 13.0°C
Grass Minimum Temperature: 10.6°C
Relative Humidity: 67 - 88%
Rainfall: 0 mm

Total rainfall since 1st January: 41.8 mm
Against an average of 10.7 mm

Other Stations Min Max
King's Park 12.4°C 19.8°C
Ta Kwu Ling 6.1°C 22.9°C
Wong Chuk Hang 11.3°C 21.1°C
Lau Fau Shan 9.8°C 18.8°C
Tai Po 9.9°C 19.3°C
Sha Tin 8.8°C 20.4°C
Tuen Mun 10.6°C 21.7°C
Tseung Kwan O 10.3°C 20.2°C
Sai Kung 10.3°C 16.6°C
Cheung Chau 11.8°C 19.2°C
Chek Lap Kok 12.1°C 19.3°C
Tsing Yi 11.2°C 20.8°C
Shek Kong 7.6°C 22.7°C
Tsuen Wan Ho Koon 9.6°C 20.7°C
Tsuen Wan Shing Mun Valley 8.8°C 22.0°C
Hong Kong Park 12.0°C 20.5°C
Shau Kei Wan 12.3°C 17.5°C
Kowloon City 12.2°C 20.1°C
Happy Valley 11.2°C 21.2°C
Wong Tai Sin 12.2°C 21.0°C
Stanley 13.2°C 16.9°C
Kwun Tong 12.7°C 19.4°C
Sham Shui Po 12.4°C 20.9°C
Kai Tak Runway Park 14.0°C 17.8°C
Yuen Long Park 7.7°C 22.7°C
Duration of Sunshine (King's Park): 9.6 H

The mean UV Index recorded at King's Park yesterday was 3, the UV intensity was moderate.

The maximum UV Index for yesterday was 6.

Sea surface temperature (Waglan Island): 16.3°C

Yesterday's (15 Jan) average ambient gamma radiation dose rate taken outdoors in Hong Kong ranged from 0.08 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 0.14
Ping Chau 0.08
Tap Mun 0.09
Kat O 0.10
Yuen Ng Fan 0.12
Tai Mei Tuk 0.12
Sha Tau Kok 0.10
Kwun Tong 0.12
Sai Wan Ho 0.09
Tsim Bei Tsui 0.13
Cape D'Aguilar0.13
Chek Lap Kok0.15


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.
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