Month	Highest Daily	Highest Monthly	Lowest Monthly	Highest Season	Lowest Season
January	191.0 on 17/01/1988	387.1 in 1911	5.6 in 1985	Summer	Summer
February	243.6 on 03/02/1990	630.6 in 1990	3.0 in 1939	886.3 in 1955/56	47.8 in 1939/40
March	280.7 on 28/03/1942	521.4 in 1942	8.4 in 1965
April	191.0 on 29/04/1860	622.1 in 1861	1.4 in 1868	Autumn	Autumn
May	212.3 on 28/05/1889	585.0 in 1919	3.7 in 1957	881.3 in 1870	49.5 in 1888
June	150.6 on 11/06/1991	642.7 in 1950	4.1 in 1904, 1962
July	198.1 on 07/07/1931	336.1 in 1950	1.8 in 1970	Winter	Winter
August	327.6 on 06/08/1986	482.6 in 1998	0.0 in 1995	1060.3 in 1950	42.9 in 1895
September	144.5 on 10/09/1879	355.8 in 1879	2.1 in 1882
October	161.8 on 13/10/1902	285.0 in 1987	0.6 in 1988	Spring	Spring
November	234.6 on 09/11/1984	517.2 in 1961	1.9 in 1915	644.1 in 1961	29.5 in 1968
December	126.0 on 09/12/1970	401.9 in 1920	2.8 in 1979
Year	327.6 on 06/08/1986	2194.0 in 1950	583.0 in 1888

Rainfall is in millimetres.

Quality controlled site data: 066062 Sydney - Observatory Hill (July 1858 to December 2005)
Daily rainfall data obtained from Bureau of Meteorology. Statistics calculated by Michael Bath and Stuart Kidd.