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Extreme Values and Dates of Occurrence of Extremes of Meteorological Elements between 1884-1939 and 1947-2013 for Hong Kong

Month Barometric Pressure Air Temperature
Absolute Maximum Absolute Minimum Absolute Maximum Absolute Minimum
hPa Date hPa Date deg. C Date deg. C Date
January 1035.4 06/01/1903 1003.1 29/01/1980 26.9 29/01/1959 0.0 18/01/1893
February 1032.7 01/02/1962 998.3 19/02/1898 28.3 25/02/2009 2.4 11/02/1957
March 1033.9 05/03/2005 1001.9 24/03/1918 30.1 31/03/1973 4.8 01/03/1986
April 1028.4 09/04/1925
02/04/1991
999.9 02/04/1924 33.4 27/04/1956 9.9 05/04/1969
May 1020.2 01/05/1934 981.1 19/05/1961 35.5 31/05/1963 15.4 01/05/1917
June 1014.7 12/06/2004 973.8 09/06/1960 35.6 01/06/1963 19.2 02/06/1926
July 1014.8 30/07/1934 975.8 29/07/1896 35.7 25/07/1968 21.7 30/07/1989
August 1016.3 13/08/1969 961.6 02/08/1979 36.1 19/08/1900
18/08/1990
21.6 03/08/1955
September 1018.2 26/09/1902
26/09/1987
953.2 01/09/1962 35.2 05/09/1963 18.4 26/09/1935
October 1024.5 23/10/1888 977.3 13/10/1964 34.3 12/10/1890 13.5 30/10/1978
November 1033.2 26/11/1922 974.9 10/11/1900 31.8 19/11/1959 6.5 26/11/1922
December 1033.5 31/12/1913 1004.6 02/12/1974 28.7 01/12/1953 4.3 14/12/1975
Year 1035.4 06/01/1903 953.2 01/09/1962 36.1 19/08/1900
18/08/1990
0.0 18/01/1893
Period of
Record
1884   -   1939   ;   1947   -   2013


Month Wind Relative Humidity #
Maximum Gust Peak Speed
at the Hong Kong Observatory
Maximum Gust Peak Speed
at Waglan Island
Absolute Minimum
km/h Date km/h Date % Date
January 96 16/01/1961 103 15/01/1955 10 16/01/1959
February 103 11/02/1960
27/02/1980
110 19/02/1955 13 21/02/1955
March 108 21/03/1934 103 31/03/1960 16 04/03/1977
April 106 11/04/1965 135 11/04/1990 22 17/04/1922
May 166 19/05/1961 140 28/05/1964 23 14/05/1955
04/05/1961
June 191 09/06/1960 194 09/06/1960 29 01/06/1887
July 151 13/07/1966 158 16/07/1973 43 25/07/1968
August 224 17/08/1971 209 21/08/1968 41 28/08/1900
September 259 01/09/1962 234 16/09/1999 26 17/09/1966
October 175 13/10/1964 184 13/10/1964 21 25/10/1968
28/10/1973
27/10/1991
28/10/1991
17/10/1998
November 155 06/11/1954 175 06/11/1954 17 16/11/1900
17/11/1971
24/11/1995
December 104 09/12/1950 108 28/12/1991 14 14/12/1898
31/12/1973
Year 259 01/09/1962 234 16/09/1999 10 16/01/1959
Period of
Record
1911 - 1939 ;
April 1947 - 2013
1953 - 2013 July 1952 - 2013


Month Rainfall
Hourly Maximum Daily Maximum Monthly/Annual
Maximum
Monthly/Annual
Minimum
Maximum Instantaneous
Jardi Rate at King's Park
mm Date mm Date mm Year mm Year mm/h Date
January 21.8 03/01/1956 99.8 26/01/1887 214.3 1887 0.0 1914 168 23/01/1964
February 31.9 23/02/1990 94.1 07/02/2010 241.0 1983 0.0 1911 244 23/02/1990
March 52.5 23/03/2002 130.0 23/03/2002 428.0 1983 1.1 1971 320* 24/03/2009
April 92.4 30/04/1975 237.4 19/04/2008 547.7 2000 6.0 1994 330 09/04/2001
May 109.9 08/05/1992 520.6 30/05/1889 1241.1 1889 6.0 1963 >=347 11/05/1972
June 145.5 07/06/2008 411.3 09/06/1998 1346.1 2008 59.7 1901 320* 07/06/2008
July 115.1 16/07/2006 534.1 19/07/1926 1147.2 1994 76.9 2007 329 31/07/1995
August 82.1 02/08/1979 334.2 16/08/1982 1090.1 1995 44.2 1933  320* 03/08/1955
September 84.0 22/09/1948 325.5 27/09/1965 844.2 1952 16.3 1902 314 03/09/1973
29/09/1981
October 71.6 31/10/1923 292.2 31/10/1923 718.4 1974 0.0 1979 301 13/10/1964
November 46.6 03/11/2008 149.2 17/11/1897 224.2 1914 Trace 1924
1971
1983
144 24/11/2013
December 51.7 09/12/1931 177.3 02/12/1974 206.9 1974 0.0 1909 147 29/12/1992
Year 145.5 07/06/2008 534.1 19/07/1926 3343.0 1997 901.1 1963 >=347 11/05/1972
Period of
Record
1884   -   1939   ;   1947   -   2013

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

*  Upper limit of recorder

#  Based on hourly manual observations

The maximum instantaneous Jardi rate of rainfall in Hong Kong was 513 mm per hour recorded at 0730 hours on 17 August 1971 at Tate's Cairn


Last revision date: <22 Jan 2014>