Sydney (Observatory Hill) Threshold Days by Year (ASN00066062)

13 fixed thresholds counted per year at Sydney (Observatory Hill) (ASN00066062): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sydney (Observatory Hill) Thresholds

Sydney (Observatory Hill): days with a maximum temperature at or above 30 C (86 F) in 161 years, most in 2019 with 34.
Sydney (Observatory Hill): days with a maximum temperature at or above 90 F (32.2 C) in 161 years, most in 1926 with 22.
Sydney (Observatory Hill): nights with a minimum temperature at or above 20 C (68 F) in 161 years, most in 2017 with 82.
Sydney (Observatory Hill): days with 10 mm (0.39 in) or more of precipitation in 161 years, most in 1890 with 56.
13 fixed thresholds have at least one qualifying day at Sydney (Observatory Hill).

Days at or above 30 C (86 F)

161 years with a qualifying day

Days per year at Sydney (Observatory Hill) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 34 in 2019.

Days at or above 30 C (86 F) per year at Sydney (Observatory Hill)
Year	Days	Decade average
1859	18	18
1860	7	14.1
1861	17	14.1
1862	13	14.1
1863	15	14.1
1864	11	14.1
1865	20	14.1
1866	11	14.1
1867	19	14.1
1868	14	14.1
1869	14	14.1
1870	10	11.7
1871	7	11.7
1872	7	11.7
1873	7	11.7
1874	17	11.7
1875	20	11.7
1876	9	11.7
1877	17	11.7
1878	18	11.7
1879	5	11.7
1880	8	11.8
1881	9	11.8
1882	16	11.8
1883	8	11.8
1884	10	11.8
1885	18	11.8
1886	12	11.8
1887	7	11.8
1888	12	11.8
1889	18	11.8
1890	7	12.4
1891	14	12.4
1892	5	12.4
1893	5	12.4
1894	11	12.4
1895	11	12.4
1896	21	12.4
1897	17	12.4
1898	18	12.4
1899	15	12.4
1900	20	15.3
1901	17	15.3
1902	18	15.3
1903	12	15.3
1904	15	15.3
1905	11	15.3
1906	15	15.3
1907	14	15.3
1908	15	15.3
1909	16	15.3
1910	10	15.4
1911	17	15.4
1912	12	15.4
1913	20	15.4
1914	22	15.4
1915	21	15.4
1916	10	15.4
1917	11	15.4
1918	12	15.4
1919	19	15.4
1920	12	17
1921	14	17
1922	31	17
1923	21	17
1924	16	17
1925	11	17
1926	29	17
1927	11	17
1928	12	17
1929	13	17
1930	9	14.3
1931	17	14.3
1932	12	14.3
1933	18	14.3
1934	11	14.3
1935	17	14.3
1936	12	14.3
1937	17	14.3
1938	19	14.3
1939	11	14.3
1940	28	17.2
1941	16	17.2
1942	21	17.2
1943	14	17.2
1944	26	17.2
1945	12	17.2
1946	22	17.2
1947	7	17.2
1948	9	17.2
1949	17	17.2
1950	6	12.2
1951	13	12.2
1952	15	12.2
1953	13	12.2
1954	13	12.2
1955	10	12.2
1956	7	12.2
1957	21	12.2
1958	15	12.2
1959	9	12.2
1960	21	17.3
1961	16	17.3
1962	6	17.3
1963	11	17.3
1964	22	17.3
1965	22	17.3
1966	18	17.3
1967	17	17.3
1968	25	17.3
1969	15	17.3
1970	15	14.6
1971	10	14.6
1972	13	14.6
1973	18	14.6
1974	7	14.6
1975	16	14.6
1976	11	14.6
1977	27	14.6
1978	10	14.6
1979	19	14.6
1980	24	14.2
1981	10	14.2
1982	16	14.2
1983	18	14.2
1984	12	14.2
1985	15	14.2
1986	11	14.2
1987	15	14.2
1988	14	14.2
1989	7	14.2
1990	16	14.1
1991	23	14.1
1992	4	14.1
1993	17	14.1
1994	11	14.1
1995	11	14.1
1996	12	14.1
1997	15	14.1
1998	27	14.1
1999	5	14.1
2000	19	19.4
2001	20	19.4
2002	19	19.4
2003	16	19.4
2004	27	19.4
2005	20	19.4
2006	25	19.4
2007	12	19.4
2008	15	19.4
2009	21	19.4
2010	18	23.3
2011	24	23.3
2012	14	23.3
2013	18	23.3
2014	18	23.3
2015	23	23.3
2016	28	23.3
2017	30	23.3
2018	26	23.3
2019	34	23.3

For each year, a bar from the first to the last day at Sydney (Observatory Hill) meeting 30 C (86 F).

First to last qualifying date each year at Sydney (Observatory Hill)
Year	First date	Last date
1859	1859-01-09	1859-12-10
1860	1860-01-12	1860-03-30
1861	1861-01-21	1861-12-28
1862	1862-01-11	1862-12-06
1863	1863-01-01	1863-12-31
1864	1864-01-04	1864-12-19
1865	1865-01-05	1865-12-21
1866	1866-01-02	1866-12-17
1867	1867-01-02	1867-12-30
1868	1868-02-08	1868-12-25
1869	1869-01-06	1869-12-27
1870	1870-01-12	1870-12-18
1871	1871-01-31	1871-12-22
1872	1872-01-16	1872-12-09
1873	1873-09-28	1873-12-26
1874	1874-02-05	1874-12-23
1875	1875-01-06	1875-12-29
1876	1876-01-19	1876-12-16
1877	1877-01-05	1877-12-28
1878	1878-01-10	1878-12-23
1879	1879-02-27	1879-12-27
1880	1880-01-07	1880-12-13
1881	1881-01-20	1881-12-28
1882	1882-01-05	1882-12-31
1883	1883-12-06	1883-12-30
1884	1884-01-06	1884-12-03
1885	1885-01-08	1885-12-09
1886	1886-01-08	1886-12-04
1887	1887-01-30	1887-12-06
1888	1888-01-03	1888-11-24
1889	1889-01-11	1889-12-27
1890	1890-01-03	1890-12-30
1891	1891-01-02	1891-12-30
1892	1892-02-11	1892-12-14
1893	1893-01-11	1893-12-18
1894	1894-01-12	1894-12-15
1895	1895-01-25	1895-12-20
1896	1896-01-04	1896-12-28
1897	1897-01-21	1897-12-17
1898	1898-01-01	1898-12-03
1899	1899-01-02	1899-12-26
1900	1900-01-18	1900-12-31
1901	1901-01-02	1901-12-28
1902	1902-01-14	1902-12-31
1903	1903-01-06	1903-12-12
1904	1904-01-23	1904-12-31
1905	1905-01-02	1905-11-27
1906	1906-01-20	1906-12-17
1907	1907-01-06	1907-12-16
1908	1908-01-17	1908-12-30
1909	1909-01-03	1909-12-29
1910	1910-01-04	1910-12-30
1911	1911-01-06	1911-12-25
1912	1912-01-02	1912-12-18
1913	1913-01-03	1913-12-31
1914	1914-01-02	1914-12-16
1915	1915-01-04	1915-12-02
1916	1916-01-06	1916-12-09
1917	1917-01-07	1917-12-31
1918	1918-02-09	1918-12-24
1919	1919-01-02	1919-12-25
1920	1920-01-16	1920-12-30
1921	1921-01-01	1921-12-13
1922	1922-01-05	1922-12-30
1923	1923-01-06	1923-12-18
1924	1924-01-07	1924-12-14
1925	1925-01-02	1925-12-22
1926	1926-01-07	1926-12-10
1927	1927-01-15	1927-12-05
1928	1928-01-01	1928-11-30
1929	1929-01-04	1929-12-28
1930	1930-01-02	1930-12-25
1931	1931-01-04	1931-12-31
1932	1932-01-09	1932-12-28
1933	1933-01-11	1933-12-05
1934	1934-01-24	1934-12-31
1935	1935-01-03	1935-12-25
1936	1936-01-16	1936-12-21
1937	1937-01-02	1937-12-13
1938	1938-01-06	1938-12-19
1939	1939-01-11	1939-12-21
1940	1940-01-24	1940-12-28
1941	1941-02-01	1941-12-27
1942	1942-01-02	1942-12-28
1943	1943-01-13	1943-12-23
1944	1944-01-15	1944-12-27
1945	1945-01-25	1945-12-17
1946	1946-01-04	1946-12-29
1947	1947-01-29	1947-12-31
1948	1948-02-19	1948-12-18
1949	1949-01-04	1949-12-24
1950	1950-01-06	1950-12-14
1951	1951-02-13	1951-12-19
1952	1952-01-11	1952-11-16
1953	1953-04-27	1953-12-27
1954	1954-02-05	1954-12-04
1955	1955-01-03	1955-12-02
1956	1956-01-15	1956-12-31
1957	1957-01-10	1957-12-29
1958	1958-01-19	1958-12-21
1959	1959-01-15	1959-12-18
1960	1960-01-02	1960-12-27
1961	1961-01-28	1961-12-29
1962	1962-02-08	1962-12-11
1963	1963-01-27	1963-12-30
1964	1964-01-03	1964-12-24
1965	1965-02-16	1965-12-31
1966	1966-01-13	1966-12-19
1967	1967-01-09	1967-12-30
1968	1968-01-20	1968-12-09
1969	1969-01-05	1969-12-19
1970	1970-01-11	1970-12-28
1971	1971-01-09	1971-12-04
1972	1972-02-18	1972-12-30
1973	1973-01-13	1973-12-25
1974	1974-02-02	1974-12-28
1975	1975-01-02	1975-12-17
1976	1976-02-18	1976-12-28
1977	1977-01-01	1977-12-27
1978	1978-01-06	1978-10-13
1979	1979-01-06	1979-12-23
1980	1980-01-11	1980-12-21
1981	1981-01-27	1981-12-12
1982	1982-01-22	1982-12-24
1983	1983-01-05	1983-12-25
1984	1984-01-03	1984-12-18
1985	1985-01-05	1985-12-31
1986	1986-01-02	1986-04-05
1987	1987-01-14	1987-12-06
1988	1988-01-21	1988-12-10
1989	1989-01-10	1989-12-26
1990	1990-01-03	1990-12-31
1991	1991-01-01	1991-12-15
1992	1992-01-21	1992-02-22
1993	1993-01-15	1993-12-29
1994	1994-01-02	1994-12-27
1995	1995-01-06	1995-12-18
1996	1996-01-20	1996-12-09
1997	1997-02-09	1997-12-22
1998	1998-01-03	1998-12-13
1999	1999-01-11	1999-11-14
2000	2000-01-04	2000-12-27
2001	2001-01-05	2001-12-25
2002	2002-01-01	2002-12-22
2003	2003-01-08	2003-12-25
2004	2004-01-07	2004-12-27
2005	2005-01-05	2005-12-30
2006	2006-01-03	2006-12-14
2007	2007-01-21	2007-12-04
2008	2008-01-13	2008-12-31
2009	2009-01-01	2009-12-17
2010	2010-01-02	2010-12-26
2011	2011-01-15	2011-11-30
2012	2012-01-30	2012-12-20
2013	2013-01-08	2013-12-23
2014	2014-01-02	2014-12-26
2015	2015-01-04	2015-12-20
2016	2016-01-11	2016-12-31
2017	2017-01-10	2017-12-30
2018	2018-01-07	2018-12-31
2019	2019-01-01	2019-12-31

Every Fixed Threshold

Fixed thresholds at Sydney (Observatory Hill)
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	161	34	2019	34
35 C (95 F): Days	149	12	1926	10
40 C (104 F): Days	38	2	1896	1
90 F (32.2 C): Days	161	22	1926	19
100 F (37.8 C): Days	95	7	1926	3
110 F (43.3 C): Days	1	1	2018	1
20 C (68 F): Tropical nights (min	161	82	2017	61
25 C (77 F): Days with min	22	5	2017	5
10 mm (0.39 in): Days with 10 mm or more rain	161	56	1890	28
25 mm (0.98 in): Days with 25 mm or more rain	161	27	1963	9
50 mm (1.97 in): Days with 50 mm or more rain	155	10	1873	2
100 mm (3.94 in): Days with 100 mm or more rain	84	4	1998	1
200 mm (7.87 in): Days with 200 mm or more rain	6	1	1873	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1859.

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Data for Sydney (Observatory Hill) threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Sydney (Observatory Hill) Threshold Days by Year (ASN00066062)

Key Facts for Sydney (Observatory Hill) Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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