Robben Island (Vrt) Threshold Days by Year (SF000206490)

3 fixed thresholds counted per year at Robben Island (Vrt) (SF000206490): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Robben Island (Vrt) Thresholds

Robben Island (Vrt): days with 10 mm (0.39 in) or more of precipitation in 95 years, most in 1977 with 26.
Robben Island (Vrt): days with 25 mm (0.98 in) or more of precipitation in 79 years, most in 1920 with 7.
Robben Island (Vrt): days with 50 mm (1.97 in) or more of precipitation in 12 years, most in 1954 with 2.
3 fixed thresholds have at least one qualifying day at Robben Island (Vrt).

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

95 years with a qualifying day

Days per year at Robben Island (Vrt) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 26 in 1977.

Days with 10 mm (0.39 in) or more of precipitation per year at Robben Island (Vrt)
Year	Days	Decade average
1891	16	15.5
1894	14	15.5
1898	13	15.5
1899	19	15.5
1900	11	15.1
1901	15	15.1
1902	19	15.1
1903	19	15.1
1904	19	15.1
1905	16	15.1
1906	10	15.1
1907	11	15.1
1908	16	15.1
1910	12	14.7
1911	16	14.7
1912	17	14.7
1913	11	14.7
1914	19	14.7
1915	20	14.7
1916	11	14.7
1917	14	14.7
1918	15	14.7
1919	12	14.7
1920	18	12
1921	19	12
1922	14	12
1924	7	12
1925	13	12
1926	12	12
1927	9	12
1928	5	12
1929	11	12
1930	5	8.9
1933	11	8.9
1934	7	8.9
1935	13	8.9
1936	8	8.9
1937	15	8.9
1938	5	8.9
1939	7	8.9
1940	14	11
1942	10	11
1944	10	11
1945	11	11
1946	9	11
1947	13	11
1948	10	11
1949	11	11
1950	12	14.8
1951	12	14.8
1952	17	14.8
1953	19	14.8
1954	20	14.8
1955	10	14.8
1956	14	14.8
1957	14	14.8
1958	13	14.8
1959	17	14.8
1960	10	10.4
1961	9	10.4
1962	18	10.4
1963	8	10.4
1964	11	10.4
1965	11	10.4
1966	9	10.4
1967	7	10.4
1968	12	10.4
1969	9	10.4
1970	15	13
1971	7	13
1972	9	13
1973	7	13
1974	14	13
1975	16	13
1976	13	13
1977	26	13
1978	11	13
1979	12	13
1980	12	13.4
1981	14	13.4
1982	11	13.4
1983	9	13.4
1984	15	13.4
1985	17	13.4
1986	11	13.4
1987	17	13.4
1988	7	13.4
1989	21	13.4
1990	13	15.1
1991	21	15.1
1992	16	15.1
1993	17	15.1
1994	9	15.1
1995	11	15.1
1996	19	15.1

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

First to last qualifying date each year at Robben Island (Vrt)
Year	First date	Last date
1891	1891-04-26	1891-09-21
1894	1894-02-21	1894-11-21
1898	1898-04-10	1898-10-04
1899	1899-04-15	1899-12-30
1900	1900-05-15	1900-10-13
1901	1901-01-15	1901-12-30
1902	1902-04-06	1902-10-27
1903	1903-01-27	1903-10-26
1904	1904-01-09	1904-11-12
1905	1905-05-25	1905-11-11
1906	1906-01-01	1906-12-25
1907	1907-03-17	1907-12-31
1908	1908-01-13	1908-11-04
1910	1910-04-20	1910-12-26
1911	1911-04-17	1911-12-27
1912	1912-03-25	1912-11-23
1913	1913-04-17	1913-09-28
1914	1914-01-21	1914-11-09
1915	1915-03-17	1915-09-09
1916	1916-03-22	1916-09-02
1917	1917-01-05	1917-11-26
1918	1918-05-21	1918-11-19
1919	1919-01-01	1919-11-15
1920	1920-04-10	1920-12-19
1921	1921-02-02	1921-10-07
1922	1922-01-11	1922-10-13
1924	1924-06-08	1924-08-27
1925	1925-01-12	1925-11-15
1926	1926-02-25	1926-10-31
1927	1927-04-23	1927-08-29
1928	1928-01-25	1928-08-19
1929	1929-04-26	1929-12-30
1930	1930-07-07	1930-11-29
1933	1933-05-29	1933-10-14
1934	1934-05-14	1934-10-20
1935	1935-04-27	1935-10-13
1936	1936-01-02	1936-09-09
1937	1937-04-18	1937-09-11
1938	1938-04-15	1938-12-31
1939	1939-02-16	1939-12-23
1940	1940-02-08	1940-11-19
1942	1942-04-10	1942-10-11
1944	1944-05-08	1944-10-04
1945	1945-04-27	1945-08-03
1946	1946-04-04	1946-12-22
1947	1947-03-23	1947-08-31
1948	1948-03-17	1948-09-28
1949	1949-01-22	1949-11-01
1950	1950-04-17	1950-10-17
1951	1951-04-18	1951-11-25
1952	1952-03-22	1952-11-16
1953	1953-04-10	1953-08-24
1954	1954-01-08	1954-12-15
1955	1955-02-18	1955-10-20
1956	1956-03-26	1956-10-25
1957	1957-02-21	1957-10-26
1958	1958-02-19	1958-10-14
1959	1959-03-03	1959-10-30
1960	1960-04-05	1960-12-18
1961	1961-03-10	1961-09-06
1962	1962-02-16	1962-11-12
1963	1963-05-21	1963-11-22
1964	1964-02-17	1964-10-14
1965	1965-02-25	1965-08-25
1966	1966-03-22	1966-09-02
1967	1967-04-26	1967-11-22
1968	1968-04-29	1968-10-16
1969	1969-03-08	1969-10-08
1970	1970-02-23	1970-10-07
1971	1971-05-18	1971-08-16
1972	1972-04-29	1972-12-28
1973	1973-05-28	1973-08-09
1974	1974-05-04	1974-10-19
1975	1975-04-25	1975-11-17
1976	1976-06-01	1976-12-30
1977	1977-02-19	1977-11-30
1978	1978-02-12	1978-09-28
1979	1979-02-17	1979-10-21
1980	1980-01-03	1980-12-20
1981	1981-01-25	1981-12-19
1982	1982-01-14	1982-09-11
1983	1983-02-01	1983-09-03
1984	1984-04-30	1984-12-17
1985	1985-03-13	1985-08-08
1986	1986-03-15	1986-08-29
1987	1987-03-14	1987-09-23
1988	1988-03-07	1988-08-30
1989	1989-02-28	1989-11-17
1990	1990-04-21	1990-12-16
1991	1991-04-05	1991-10-29
1992	1992-04-15	1992-10-23
1993	1993-02-14	1993-12-01
1994	1994-05-26	1994-10-20
1995	1995-05-05	1995-10-11
1996	1996-02-12	1996-12-30

Every Fixed Threshold

Fixed thresholds at Robben Island (Vrt)
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	95	26	1977	19
25 mm (0.98 in): Days with 25 mm or more rain	79	7	1920	2
50 mm (1.97 in): Days with 50 mm or more rain	12	2	1954	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1891.

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Data for Robben Island (Vrt) 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).

Robben Island (Vrt) Threshold Days by Year (SF000206490)

Key Facts for Robben Island (Vrt) Thresholds

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

Every Fixed Threshold

Download the Data

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