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Monthly Normals of Meteorological Elements for Hong Kong, September 1961-1990

Climatological Information Services > Climatological Normals and Extremes > 1961-1990 Normals for Hong Kong (Grouped by month)

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Monthly Normals of Meteorological Elements for Hong Kong,
September 1961-1990
 
Meteorological Elements
ATMOSPHERIC PRESSURE Mean 1008.8 hPa
Mean Diurnal Range 3.6 hPa
AIR TEMPERATURE Mean Daily Maximum 30.3 deg. C
Mean 27.6 deg. C
Mean Daily Minimum 25.5 deg. C
RELATIVE HUMIDITY Mean 78 %
AMOUNT OF CLOUD 63 %
RAINFALL Total 299.7 mm
Duration 68 hours
Number of
Days with
0.1 mm
or above
14.37  
25.0 mm
or above
3.57  
50.0 mm
or above
1.63  
NUMBER OF DAYS WITH THUNDERSTORM 3.93  
NUMBER OF DAYS WITH FOG
(Visibility < 1000 m)
0  
SOIL TEMPERATURE
AT 0700 HOURS *
0.5 m 29.6 deg. C
1.0 m 29.4 deg. C
BRIGHT SUNSHINE
AT KING'S PARK
Duration 181.7 hours
Percentage of Possible 49 %
WIND
AT WAGLAN ISLAND
Prevailing Direction 090 degrees
Mean Speed 21.9 km/h
SEA SURFACE TEMPERATURE
AT NORTH POINT AT 0700 HOURS **
27.1 deg. C


Note : All measurements were made at the Hong Kong Observatory except where specified.

 *  1967 - 1996
** 1975 - 2004