Robben Island (Vrt) Weather Records (SF000206490)

Record envelope, standing records and threshold days for Robben Island (Vrt) (SF000206490), South Africa, with 108 years of record.

Key Facts for Robben Island (Vrt)

Robben Island (Vrt) (SF000206490) is a weather station in South Africa at -33.82 latitude and 18.38 longitude, 18 m (59 ft) above sea level.
The station reports from 1890 to 1997, 108 years of record.
0 records set at Robben Island (Vrt) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Robben Island (Vrt) set a daily record precipitation of 20.0 mm (0.8 in) on 15 November 1997.

About the Station

Location: South Africa, -33.82 latitude, 18.38 longitude.
Elevation: 18 m (59 ft).
Period of record: 1890 to 1997, 108 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Robben Island (Vrt). The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Robben Island (Vrt), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

0 standing records

0 records at Robben Island (Vrt) still stand.

All-Time Record Progression

1 new records

1 all-time records were set at Robben Island (Vrt) between 7 June 1968 and 7 June 1968. Each dot is a new record.

Wettest Day of Each Month

Jun: 72.0 mm (2.8 in)

The wettest day on record for each calendar month at Robben Island (Vrt). The most was 72.0 mm (2.8 in) on 7 June 1968.

Record daily precipitation for each month at Robben Island (Vrt)
Month	Record daily precipitation (mm)	Date
Jan	65.0 mm (2.6 in)	25 January 1981
Feb	56.1 mm (2.2 in)	17 February 1954
Mar	31.5 mm (1.2 in)	14 March 1985
Apr	53.3 mm (2.1 in)	4 April 1946
May	66.3 mm (2.6 in)	19 May 1911
Jun	72.0 mm (2.8 in)	7 June 1968
Jul	59.6 mm (2.3 in)	5 July 1985
Aug	46.0 mm (1.8 in)	25 August 1899
Sep	34.0 mm (1.3 in)	19 September 1902
Oct	51.0 mm (2.0 in)	7 October 1962
Nov	33.0 mm (1.3 in)	26 November 1893
Dec	38.1 mm (1.5 in)	5 December 1910

Latest Records

Latest records at Robben Island (Vrt)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 November 1997	Robben Island (Vrt), ZA	daily rain	20.0 mm (0.8 in)	1.2 mm (0.05 in)	72 years	20 of 100 (Routine)
19 November 1996	Robben Island (Vrt), ZA	daily rain	18.2 mm (0.7 in)	3.0 mm (0.12 in)	78 years	20 of 100 (Routine)
15 June 1996	Robben Island (Vrt), ZA	daily rain	40.0 mm (1.6 in)	11.0 mm (0.4 in)	32 years	31 of 100 (Routine)
30 May 1996	Robben Island (Vrt), ZA	daily rain	33.5 mm (1.3 in)	13.7 mm (0.5 in)	89 years	53 of 100 (Notable)
22 February 1996	Robben Island (Vrt), ZA	daily rain	5.2 mm (0.20 in)	2.7 mm (0.11 in)	104 years	20 of 100 (Routine)
12 February 1996	Robben Island (Vrt), ZA	daily rain	22.0 mm (0.9 in)	8.0 mm (0.31 in)	17 years	20 of 100 (Routine)
11 October 1995	Robben Island (Vrt), ZA	daily rain	11.3 mm (0.4 in)	0.6 mm (0.02 in)	52 years	20 of 100 (Routine)
20 July 1995	Robben Island (Vrt), ZA	daily rain	24.4 mm (1.0 in)	3.8 mm (0.15 in)	6 years	17 of 100 (Routine)
23 July 1994	Robben Island (Vrt), ZA	daily rain	35.4 mm (1.4 in)	3.0 mm (0.12 in)	12 years	17 of 100 (Routine)
1 December 1993	Robben Island (Vrt), ZA	daily rain	10.2 mm (0.4 in)	0.7 mm (0.03 in)	38 years	20 of 100 (Routine)
1 May 1993	Robben Island (Vrt), ZA	daily rain	40.5 mm (1.6 in)	19.7 mm (0.8 in)	3 years	34 of 100 (Routine)
11 April 1993	Robben Island (Vrt), ZA	daily rain	44.2 mm (1.7 in)	14.2 mm (0.6 in)	40 years	42 of 100 (Notable)
6 February 1993	Robben Island (Vrt), ZA	daily rain	3.4 mm (0.13 in)	0.4 mm (0.02 in)	89 years	20 of 100 (Routine)
22 October 1992	Robben Island (Vrt), ZA	daily rain	10.2 mm (0.4 in)	2.2 mm (0.09 in)	20 years	20 of 100 (Routine)
4 September 1992	Robben Island (Vrt), ZA	daily rain	28.2 mm (1.1 in)	16.8 mm (0.7 in)	43 years	55 of 100 (Notable)
2 May 1992	Robben Island (Vrt), ZA	daily rain	14.5 mm (0.6 in)	0.3 mm (0.01 in)	76 years	20 of 100 (Routine)
29 February 1992	Robben Island (Vrt), ZA	daily rain	1.1 mm (0.04 in)	1.1 mm (0.04 in)	99 years	20 of 100 (Routine)
24 February 1992	Robben Island (Vrt), ZA	daily rain (Tie)	5.0 mm (0.20 in)	tie	2 years	2 of 100 (Routine)
29 October 1991	Robben Island (Vrt), ZA	daily rain	13.5 mm (0.5 in)	7.0 mm (0.28 in)	5 years	20 of 100 (Routine)
18 October 1991	Robben Island (Vrt), ZA	daily rain	12.5 mm (0.5 in)	3.2 mm (0.13 in)	12 years	18 of 100 (Routine)

Extremes by Year

1890 to 1997

Yearly extremes at Robben Island (Vrt): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	72.0 mm (2.8 in)	1968	32.5 mm (1.3 in)	107
Wettest five days (Rx5day)	113.2 mm (4.5 in)	1917	56.4 mm (2.2 in)	107
Longest dry spell (CDD)	97 days	1945	41 days	107

Wettest day (Rx1day)

The wettest day of the year at Robben Island (Vrt), 1890 to 1997. The record is 72.0 mm (2.8 in) in 1968, marked on the chart; the median year is 32.5 mm (1.3 in).

Wettest day (Rx1day) at Robben Island (Vrt) by year
Year	Wettest day (Rx1day)
1890	10.7 mm (0.4 in)
1891	45.7 mm (1.8 in)
1892	31.5 mm (1.2 in)
1893	35.6 mm (1.4 in)
1894	38.1 mm (1.5 in)
1895	32.3 mm (1.3 in)
1897	37.8 mm (1.5 in)
1898	50.8 mm (2.0 in)
1899	46.0 mm (1.8 in)
1900	39.4 mm (1.6 in)
1901	27.9 mm (1.1 in)
1902	34.8 mm (1.4 in)
1903	31.5 mm (1.2 in)
1904	30.0 mm (1.2 in)
1905	36.1 mm (1.4 in)
1906	24.4 mm (1.0 in)
1907	22.1 mm (0.9 in)
1908	29.5 mm (1.2 in)
1909	38.1 mm (1.5 in)
1910	38.1 mm (1.5 in)
1911	66.3 mm (2.6 in)
1912	29.2 mm (1.1 in)
1913	36.1 mm (1.4 in)
1914	27.9 mm (1.1 in)
1915	29.0 mm (1.1 in)
1916	35.3 mm (1.4 in)
1917	49.5 mm (1.9 in)
1918	49.8 mm (2.0 in)
1919	29.2 mm (1.1 in)
1920	41.9 mm (1.6 in)
1921	35.6 mm (1.4 in)
1922	29.0 mm (1.1 in)
1923	41.4 mm (1.6 in)
1924	19.8 mm (0.8 in)
1925	35.6 mm (1.4 in)
1926	30.0 mm (1.2 in)
1927	33.3 mm (1.3 in)
1928	18.3 mm (0.7 in)
1929	17.0 mm (0.7 in)
1930	15.2 mm (0.6 in)
1931	17.5 mm (0.7 in)
1932	24.6 mm (1.0 in)
1933	42.4 mm (1.7 in)
1934	24.9 mm (1.0 in)
1935	42.4 mm (1.7 in)
1936	35.6 mm (1.4 in)
1937	42.2 mm (1.7 in)
1938	25.9 mm (1.0 in)
1939	41.7 mm (1.6 in)
1940	30.5 mm (1.2 in)
1941	55.1 mm (2.2 in)
1942	63.0 mm (2.5 in)
1943	11.4 mm (0.4 in)
1944	29.2 mm (1.1 in)
1945	33.8 mm (1.3 in)
1946	53.3 mm (2.1 in)
1947	26.7 mm (1.1 in)
1948	16.3 mm (0.6 in)
1949	30.0 mm (1.2 in)
1950	47.2 mm (1.9 in)
1951	42.2 mm (1.7 in)
1952	40.1 mm (1.6 in)
1953	30.0 mm (1.2 in)
1954	56.1 mm (2.2 in)
1955	32.5 mm (1.3 in)
1956	29.5 mm (1.2 in)
1957	34.5 mm (1.4 in)
1958	28.5 mm (1.1 in)
1959	27.5 mm (1.1 in)
1960	22.0 mm (0.9 in)
1961	36.5 mm (1.4 in)
1962	51.0 mm (2.0 in)
1963	18.0 mm (0.7 in)
1964	29.0 mm (1.1 in)
1965	18.5 mm (0.7 in)
1966	25.5 mm (1.0 in)
1967	27.0 mm (1.1 in)
1968	72.0 mm (2.8 in)
1969	18.5 mm (0.7 in)
1970	26.0 mm (1.0 in)
1971	28.5 mm (1.1 in)
1972	22.0 mm (0.9 in)
1973	24.0 mm (0.9 in)
1974	42.0 mm (1.7 in)
1975	47.5 mm (1.9 in)
1976	21.8 mm (0.9 in)
1977	32.0 mm (1.3 in)
1978	26.5 mm (1.0 in)
1979	34.0 mm (1.3 in)
1980	50.0 mm (2.0 in)
1981	65.0 mm (2.6 in)
1982	37.5 mm (1.5 in)
1983	39.5 mm (1.6 in)
1984	31.0 mm (1.2 in)
1985	59.6 mm (2.3 in)
1986	38.0 mm (1.5 in)
1987	55.4 mm (2.2 in)
1988	32.5 mm (1.3 in)
1989	31.7 mm (1.2 in)
1990	37.5 mm (1.5 in)
1991	55.0 mm (2.2 in)
1992	28.2 mm (1.1 in)
1993	44.2 mm (1.7 in)
1994	35.4 mm (1.4 in)
1995	24.4 mm (1.0 in)
1996	40.0 mm (1.6 in)
1997	20.0 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Robben Island (Vrt), 1890 to 1997. The record is 113.2 mm (4.5 in) in 1917, marked on the chart; the median year is 56.4 mm (2.2 in).

Wettest five days (Rx5day) at Robben Island (Vrt) by year
Year	Wettest five days (Rx5day)
1890	15.7 mm (0.6 in)
1891	47.0 mm (1.9 in)
1892	49.1 mm (1.9 in)
1893	57.4 mm (2.3 in)
1894	40.7 mm (1.6 in)
1895	47.5 mm (1.9 in)
1897	65.0 mm (2.6 in)
1898	63.5 mm (2.5 in)
1899	82.1 mm (3.2 in)
1900	46.5 mm (1.8 in)
1901	61.8 mm (2.4 in)
1902	65.0 mm (2.6 in)
1903	51.1 mm (2.0 in)
1904	54.5 mm (2.1 in)
1905	105.8 mm (4.2 in)
1906	29.9 mm (1.2 in)
1907	44.4 mm (1.7 in)
1908	41.2 mm (1.6 in)
1909	97.0 mm (3.8 in)
1910	45.9 mm (1.8 in)
1911	74.9 mm (2.9 in)
1912	53.0 mm (2.1 in)
1913	71.4 mm (2.8 in)
1914	72.9 mm (2.9 in)
1915	81.1 mm (3.2 in)
1916	45.3 mm (1.8 in)
1917	113.2 mm (4.5 in)
1918	80.3 mm (3.2 in)
1919	39.3 mm (1.5 in)
1920	64.0 mm (2.5 in)
1921	77.5 mm (3.1 in)
1922	37.8 mm (1.5 in)
1923	49.3 mm (1.9 in)
1924	26.4 mm (1.0 in)
1925	103.7 mm (4.1 in)
1926	65.6 mm (2.6 in)
1927	47.8 mm (1.9 in)
1928	42.2 mm (1.7 in)
1929	34.3 mm (1.4 in)
1930	29.5 mm (1.2 in)
1931	17.5 mm (0.7 in)
1932	57.4 mm (2.3 in)
1933	55.4 mm (2.2 in)
1934	52.1 mm (2.1 in)
1935	53.3 mm (2.1 in)
1936	59.3 mm (2.3 in)
1937	65.9 mm (2.6 in)
1938	31.7 mm (1.2 in)
1939	67.8 mm (2.7 in)
1940	75.7 mm (3.0 in)
1941	62.2 mm (2.4 in)
1942	103.1 mm (4.1 in)
1943	15.0 mm (0.6 in)
1944	46.8 mm (1.8 in)
1945	84.6 mm (3.3 in)
1946	56.4 mm (2.2 in)
1947	47.8 mm (1.9 in)
1948	42.9 mm (1.7 in)
1949	49.1 mm (1.9 in)
1950	92.2 mm (3.6 in)
1951	65.9 mm (2.6 in)
1952	58.2 mm (2.3 in)
1953	89.5 mm (3.5 in)
1954	78.7 mm (3.1 in)
1955	54.6 mm (2.1 in)
1956	48.1 mm (1.9 in)
1957	49.7 mm (2.0 in)
1958	36.2 mm (1.4 in)
1959	78.0 mm (3.1 in)
1960	46.1 mm (1.8 in)
1961	63.5 mm (2.5 in)
1962	59.0 mm (2.3 in)
1963	27.3 mm (1.1 in)
1964	44.0 mm (1.7 in)
1965	44.5 mm (1.8 in)
1966	42.5 mm (1.7 in)
1967	37.5 mm (1.5 in)
1968	97.0 mm (3.8 in)
1969	26.5 mm (1.0 in)
1970	36.3 mm (1.4 in)
1971	40.5 mm (1.6 in)
1972	29.5 mm (1.2 in)
1973	24.0 mm (0.9 in)
1974	102.5 mm (4.0 in)
1975	86.0 mm (3.4 in)
1976	66.0 mm (2.6 in)
1977	64.3 mm (2.5 in)
1978	40.5 mm (1.6 in)
1979	59.9 mm (2.4 in)
1980	78.0 mm (3.1 in)
1981	66.0 mm (2.6 in)
1982	54.8 mm (2.2 in)
1983	96.0 mm (3.8 in)
1984	80.5 mm (3.2 in)
1985	92.3 mm (3.6 in)
1986	58.2 mm (2.3 in)
1987	93.6 mm (3.7 in)
1988	70.2 mm (2.8 in)
1989	54.6 mm (2.1 in)
1990	56.1 mm (2.2 in)
1991	92.2 mm (3.6 in)
1992	72.0 mm (2.8 in)
1993	66.4 mm (2.6 in)
1994	89.4 mm (3.5 in)
1995	34.5 mm (1.4 in)
1996	80.0 mm (3.1 in)
1997	23.7 mm (0.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Robben Island (Vrt), 1890 to 1997. The record is 97 days in 1945, marked on the chart; the median year is 41 days.

Longest dry spell (CDD) at Robben Island (Vrt) by year
Year	Longest dry spell (CDD)
1890	28 days
1891	36 days
1892	62 days
1893	56 days
1894	51 days
1895	48 days
1897	34 days
1898	36 days
1899	27 days
1900	30 days
1901	57 days
1902	31 days
1903	39 days
1904	35 days
1905	34 days
1906	62 days
1907	67 days
1908	36 days
1909	42 days
1910	37 days
1911	34 days
1912	35 days
1913	55 days
1914	31 days
1915	74 days
1916	28 days
1917	68 days
1918	35 days
1919	30 days
1920	39 days
1921	25 days
1922	32 days
1923	32 days
1924	28 days
1925	69 days
1926	48 days
1927	32 days
1928	40 days
1929	51 days
1930	47 days
1931	10 days
1932	39 days
1933	60 days
1934	41 days
1935	46 days
1936	36 days
1937	54 days
1938	38 days
1939	90 days
1940	38 days
1941	52 days
1942	36 days
1943	39 days
1944	54 days
1945	97 days
1946	63 days
1947	72 days
1948	25 days
1949	65 days
1950	54 days
1951	75 days
1952	46 days
1953	57 days
1954	37 days
1955	48 days
1956	38 days
1957	50 days
1958	32 days
1959	44 days
1960	56 days
1961	73 days
1962	49 days
1963	72 days
1964	44 days
1965	26 days
1966	30 days
1967	46 days
1968	47 days
1969	41 days
1970	34 days
1971	75 days
1972	44 days
1973	70 days
1974	33 days
1975	25 days
1976	65 days
1977	42 days
1978	25 days
1979	45 days
1980	31 days
1981	34 days
1982	49 days
1983	51 days
1984	56 days
1985	44 days
1986	38 days
1987	23 days
1988	66 days
1989	31 days
1990	39 days
1991	43 days
1992	31 days
1993	71 days
1994	58 days
1995	28 days
1996	32 days
1997	24 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

95 years, 1891 to 1996

A day with at least 33.4 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 72.9 mm (2.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Robben Island (Vrt): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	33.4 mm (1.3 in)
5 years	44.1 mm (1.7 in)
10 years	51.2 mm (2.0 in)
25 years	60.0 mm (2.4 in)
50 years	66.5 mm (2.6 in)
100 years	72.9 mm (2.9 in)	Longer than the 95 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 95 years of values from 1891 to 1996.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 72.0 mm (2.8 in) in 1968; 66.3 mm (2.6 in) in 1911; 65.0 mm (2.6 in) in 1981.

Download the Data

Data for Robben Island (Vrt) standing records by year: CSV or JSON. Field meanings are on the data page.
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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a