Clanwilliam (Pol) Threshold Days by Year (SF000847010)

3 fixed thresholds counted per year at Clanwilliam (Pol) (SF000847010): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Clanwilliam (Pol) Thresholds

Clanwilliam (Pol): days with 10 mm (0.39 in) or more of precipitation in 113 years, most in 1962 with 14.
Clanwilliam (Pol): days with 25 mm (0.98 in) or more of precipitation in 54 years, most in 1888 with 3.
Clanwilliam (Pol): days with 50 mm (1.97 in) or more of precipitation in 5 years, most in 1870 with 1.
3 fixed thresholds have at least one qualifying day at Clanwilliam (Pol).

Days with 10 mm (0.39 in) or more of precipitation

113 years with a qualifying day

Days per year at Clanwilliam (Pol) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 14 in 1962.

Days with 10 mm (0.39 in) or more of precipitation per year at Clanwilliam (Pol)
Year	Days	Decade average
1870	7	5.8
1871	5	5.8
1872	8	5.8
1875	7	5.8
1876	2	5.8
1877	5	5.8
1878	7	5.8
1879	5	5.8
1880	4	5.7
1881	3	5.7
1882	3	5.7
1887	8	5.7
1888	12	5.7
1889	4	5.7
1890	9	6.4
1891	7	6.4
1892	8	6.4
1893	6	6.4
1894	5	6.4
1895	6	6.4
1896	2	6.4
1897	4	6.4
1898	7	6.4
1899	10	6.4
1900	12	5.5
1901	5	5.5
1902	6	5.5
1903	7	5.5
1904	5	5.5
1905	4	5.5
1906	3	5.5
1907	4	5.5
1908	3	5.5
1909	6	5.5
1911	4	5.6
1913	7	5.6
1914	9	5.6
1915	5	5.6
1916	5	5.6
1917	3	5.6
1918	8	5.6
1919	4	5.6
1920	11	6
1922	4	6
1923	7	6
1924	1	6
1925	11	6
1926	5	6
1927	2	6
1929	7	6
1930	4	4.8
1931	5	4.8
1932	3	4.8
1933	6	4.8
1934	5	4.8
1935	8	4.8
1937	4	4.8
1938	3	4.8
1940	3	5.6
1941	12	5.6
1942	9	5.6
1943	2	5.6
1944	5	5.6
1945	5	5.6
1946	4	5.6
1947	5	5.6
1949	5	5.6
1950	4	6.4
1951	5	6.4
1952	3	6.4
1953	9	6.4
1954	10	6.4
1955	10	6.4
1956	5	6.4
1957	9	6.4
1958	2	6.4
1959	7	6.4
1960	4	5.9
1961	8	5.9
1962	14	5.9
1963	5	5.9
1964	3	5.9
1965	5	5.9
1966	5	5.9
1967	8	5.9
1968	5	5.9
1969	2	5.9
1970	2	5.4
1971	3	5.4
1972	7	5.4
1973	4	5.4
1975	3	5.4
1976	12	5.4
1977	11	5.4
1978	4	5.4
1979	3	5.4
1980	4	6.1
1981	4	6.1
1982	6	6.1
1983	7	6.1
1984	8	6.1
1985	9	6.1
1986	7	6.1
1987	7	6.1
1988	4	6.1
1989	5	6.1
1990	6	7.1
1991	7	7.1
1992	2	7.1
1993	7	7.1
1994	8	7.1
1995	6	7.1
1996	14	7.1

For each year, a bar from the first to the last day at Clanwilliam (Pol) meeting 10 mm (0.39 in).

First to last qualifying date each year at Clanwilliam (Pol)
Year	First date	Last date
1870	1870-05-06	1870-08-04
1871	1871-05-14	1871-07-21
1872	1872-05-09	1872-09-09
1875	1875-02-20	1875-10-18
1876	1876-10-11	1876-12-09
1877	1877-04-24	1877-09-10
1878	1878-04-12	1878-10-17
1879	1879-02-07	1879-09-13
1880	1880-02-19	1880-09-04
1881	1881-05-23	1881-05-30
1882	1882-06-01	1882-12-11
1887	1887-04-19	1887-10-24
1888	1888-01-11	1888-12-26
1889	1889-06-20	1889-09-16
1890	1890-02-08	1890-10-28
1891	1891-04-26	1891-09-22
1892	1892-05-23	1892-12-13
1893	1893-03-12	1893-09-27
1894	1894-02-19	1894-11-20
1895	1895-04-20	1895-09-14
1896	1896-05-10	1896-08-12
1897	1897-03-27	1897-07-20
1898	1898-04-16	1898-07-30
1899	1899-04-22	1899-08-25
1900	1900-04-14	1900-12-19
1901	1901-01-15	1901-11-19
1902	1902-02-12	1902-10-27
1903	1903-01-24	1903-11-14
1904	1904-04-06	1904-09-08
1905	1905-02-28	1905-09-29
1906	1906-06-06	1906-08-07
1907	1907-04-16	1907-10-12
1908	1908-04-03	1908-04-08
1909	1909-02-21	1909-08-14
1911	1911-07-13	1911-08-09
1913	1913-06-05	1913-10-08
1914	1914-06-17	1914-11-06
1915	1915-05-17	1915-08-23
1916	1916-01-18	1916-07-07
1917	1917-04-23	1917-07-14
1918	1918-02-10	1918-07-20
1919	1919-06-04	1919-11-06
1920	1920-05-01	1920-12-18
1922	1922-01-10	1922-08-20
1923	1923-04-18	1923-07-24
1924	1924-08-17	1924-08-17
1925	1925-03-04	1925-08-10
1926	1926-05-10	1926-10-18
1927	1927-06-29	1927-08-24
1929	1929-04-25	1929-09-06
1930	1930-05-30	1930-09-27
1931	1931-04-14	1931-10-09
1932	1932-02-11	1932-06-02
1933	1933-03-20	1933-12-21
1934	1934-02-17	1934-11-18
1935	1935-04-27	1935-12-31
1937	1937-03-28	1937-06-21
1938	1938-04-15	1938-09-04
1940	1940-04-23	1940-06-11
1941	1941-01-06	1941-09-02
1942	1942-04-10	1942-12-04
1943	1943-05-31	1943-06-27
1944	1944-03-25	1944-11-28
1945	1945-05-28	1945-07-07
1946	1946-04-04	1946-09-02
1947	1947-03-22	1947-10-23
1949	1949-04-23	1949-11-01
1950	1950-07-01	1950-12-06
1951	1951-05-15	1951-07-24
1952	1952-06-20	1952-11-17
1953	1953-03-16	1953-12-20
1954	1954-04-24	1954-10-25
1955	1955-02-18	1955-11-30
1956	1956-05-16	1956-12-20
1957	1957-05-01	1957-08-12
1958	1958-05-30	1958-06-12
1959	1959-03-08	1959-08-15
1960	1960-04-05	1960-06-20
1961	1961-04-09	1961-09-06
1962	1962-06-08	1962-11-18
1963	1963-04-06	1963-08-25
1964	1964-06-05	1964-06-16
1965	1965-03-22	1965-12-16
1966	1966-03-28	1966-07-18
1967	1967-02-14	1967-11-21
1968	1968-04-07	1968-08-22
1969	1969-06-15	1969-10-08
1970	1970-07-20	1970-08-21
1971	1971-06-21	1971-07-15
1972	1972-04-28	1972-09-20
1973	1973-03-19	1973-08-09
1975	1975-05-09	1975-08-14
1976	1976-02-05	1976-12-31
1977	1977-02-12	1977-12-01
1978	1978-01-21	1978-08-29
1979	1979-05-29	1979-06-09
1980	1980-05-22	1980-08-12
1981	1981-07-10	1981-12-05
1982	1982-01-15	1982-10-11
1983	1983-05-14	1983-09-21
1984	1984-03-10	1984-12-18
1985	1985-01-13	1985-12-02
1986	1986-06-01	1986-09-10
1987	1987-04-19	1987-09-22
1988	1988-04-20	1988-09-15
1989	1989-04-20	1989-09-05
1990	1990-04-21	1990-07-09
1991	1991-01-25	1991-10-21
1992	1992-03-29	1992-07-05
1993	1993-04-05	1993-08-20
1994	1994-04-19	1994-10-21
1995	1995-01-21	1995-12-17
1996	1996-04-18	1996-11-08

Every Fixed Threshold

Fixed thresholds at Clanwilliam (Pol)
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	113	14	1962	14
25 mm (0.98 in): Days with 25 mm or more rain	54	3	1888	1
50 mm (1.97 in): Days with 50 mm or more rain	5	1	1870	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1870.

Download the Data

Data for Clanwilliam (Pol) 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Clanwilliam (Pol) Threshold Days by Year (SF000847010)

Key Facts for Clanwilliam (Pol) Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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