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Climatological Information of World Cities for Travellers

Climate of Hong Kong

Meteorological Normals and Extremes for Hong Kong
(grouped by elements)

5-Day Normals of the Meteorological Elements for Hong Kong (1971-2000)

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Monthly Normals of Meteorological Elements for August 1971-2000,
with Extreme Values between 1884-1939 and 1947-2007 for Hong Kong
 

Meteorological Elements					Date on which extreme value was recorded
ATMOSPHERIC PRESSURE	Absolute Maximum		1016.3	hPa	13/8/1969
	Mean		1005.1	hPa
	Absolute Minimum		961.6	hPa	2/8/1979
	Mean Diurnal Range		3.5	hPa
AIR TEMPERATURE	Absolute Maximum		36.1	deg. C	19/8/1900 18/8/1990
	Mean Daily Maximum		31.1	deg. C
	Mean		28.4	deg. C
	Mean Daily Minimum		26.4	deg. C
	Absolute Minimum		21.6	deg. C	3/8/1955
RELATIVE HUMIDITY	Mean		82	%
	Absolute Minimum		41	%	28/8/1900
AMOUNT OF CLOUD			69	%
RAINFALL	Total		444.6	mm
	Duration		87	hours
	Number of Days with	0.1 mm or above	17.43
		25.0 mm or above	5.40
		50.0 mm or above	2.40
	Maximum Hourly		82.1	mm	2/8/1979
	Maximum Daily		334.2	mm	16/8/1982
	Maximum Monthly		1090.1	mm	1995
NUMBER OF DAYS WITH THUNDERSTORM			8.10
NUMBER OF DAYS WITH FOG (Visibility < 1000 m)			0
SOIL TEMPERATURE AT 0700 HOURS	0.5 m		30.0	deg. C
	1.0 m		29.4	deg. C
BRIGHT SUNSHINE AT KING'S PARK	Duration		189.7	hours
	Percentage of Possible		48	%
WIND AT WAGLAN ISLAND	Prevailing Direction		240	degrees
	Mean Speed		20.0	km/h
	Maximum Gust #		209	km/h	21/8/1968
SEA SURFACE TEMPERATURE AT NORTH POINT AT 0700 HOURS **			26.5	deg. C

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

 #  1953 - 2007
** 1975 - 2007