Colesberg (Tnk) Weather Records (SF001721630)

Record envelope, standing records and threshold days for Colesberg (Tnk) (SF001721630), South Africa, with 121 years of record.

Key Facts for Colesberg (Tnk)

Colesberg (Tnk) (SF001721630) is a weather station in South Africa at -30.72 latitude and 25.10 longitude, 1,372 m (4,501 ft) above sea level.
The station reports from 1877 to 1997, 121 years of record.
0 records set at Colesberg (Tnk) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Colesberg (Tnk) set a daily record precipitation of 7.0 mm (0.28 in) on 28 June 1997.

About the Station

Location: South Africa, -30.72 latitude, 25.10 longitude.
Elevation: 1,372 m (4,501 ft).
Period of record: 1877 to 1997, 121 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 Colesberg (Tnk). 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 Colesberg (Tnk), 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 Colesberg (Tnk) still stand.

All-Time Record Progression

3 new records

3 all-time records were set at Colesberg (Tnk) between 15 March 1918 and 1 November 1992. Each dot is a new record.

When Colesberg (Tnk) set new all-time records
Date	Kind	Detail
1918-03-15	Record daily precipitation	Record daily precipitation 77.5 mm (3.1 in)
1933-12-30	Record daily precipitation	Record daily precipitation 98.3 mm (3.9 in)
1992-11-01	Record daily precipitation	Record daily precipitation 104.5 mm (4.1 in)

Wettest Day of Each Month

Nov: 104.5 mm (4.1 in)

The wettest day on record for each calendar month at Colesberg (Tnk). The most was 104.5 mm (4.1 in) on 1 November 1992.

Record daily precipitation for each month at Colesberg (Tnk)
Month	Record daily precipitation (mm)	Date
Jan	68.3 mm (2.7 in)	31 January 1939
Feb	68.0 mm (2.7 in)	11 February 1989
Mar	96.0 mm (3.8 in)	8 March 1976
Apr	81.7 mm (3.2 in)	13 April 1989
May	51.1 mm (2.0 in)	4 May 1946
Jun	29.0 mm (1.1 in)	27 June 1990
Jul	45.5 mm (1.8 in)	15 July 1970
Aug	44.5 mm (1.8 in)	17 August 1974
Sep	76.2 mm (3.0 in)	15 September 1901
Oct	59.4 mm (2.3 in)	12 October 1936
Nov	104.5 mm (4.1 in)	1 November 1992
Dec	98.3 mm (3.9 in)	30 December 1933

Latest Records

Latest records at Colesberg (Tnk)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 June 1997	Colesberg (Tnk), ZA	daily rain	7.0 mm (0.28 in)	1.5 mm (0.06 in)	16 years	17 of 100 (Routine)
25 May 1997	Colesberg (Tnk), ZA	daily rain	32.5 mm (1.3 in)	16.8 mm (0.7 in)	54 years	46 of 100 (Notable)
4 August 1996	Colesberg (Tnk), ZA	daily rain	12.5 mm (0.5 in)	8.7 mm (0.34 in)	108 years	20 of 100 (Routine)
17 December 1995	Colesberg (Tnk), ZA	daily rain	32.5 mm (1.3 in)	5.8 mm (0.23 in)	108 years	45 of 100 (Notable)
5 May 1995	Colesberg (Tnk), ZA	daily rain	21.5 mm (0.8 in)	0.5 mm (0.02 in)	16 years	14 of 100 (Routine)
11 March 1995	Colesberg (Tnk), ZA	daily rain	51.0 mm (2.0 in)	0.2 mm (0.01 in)	90 years	37 of 100 (Notable)
6 October 1993	Colesberg (Tnk), ZA	daily rain	40.0 mm (1.6 in)	29.1 mm (1.1 in)	101 years	69 of 100 (Major)
28 June 1993	Colesberg (Tnk), ZA	daily rain (Tie)	5.5 mm (0.22 in)	tie	12 years	3 of 100 (Routine)
1 November 1992	Colesberg (Tnk), ZA	all-time rain	104.5 mm (4.1 in)	6.2 mm (0.24 in)	58 years	53 of 100 (Notable)
27 August 1992	Colesberg (Tnk), ZA	daily rain	14.3 mm (0.6 in)	6.3 mm (0.25 in)	25 years	20 of 100 (Routine)
3 August 1992	Colesberg (Tnk), ZA	daily rain	10.5 mm (0.4 in)	4.9 mm (0.19 in)	45 years	20 of 100 (Routine)
19 December 1991	Colesberg (Tnk), ZA	daily rain	24.3 mm (1.0 in)	3.3 mm (0.13 in)	2 years	12 of 100 (Routine)
8 November 1991	Colesberg (Tnk), ZA	daily rain	24.5 mm (1.0 in)	2.5 mm (0.10 in)	16 years	17 of 100 (Routine)
23 October 1991	Colesberg (Tnk), ZA	daily rain	25.0 mm (1.0 in)	2.1 mm (0.08 in)	34 years	22 of 100 (Routine)
26 September 1991	Colesberg (Tnk), ZA	daily rain	25.5 mm (1.0 in)	10.8 mm (0.4 in)	50 years	34 of 100 (Routine)
16 February 1991	Colesberg (Tnk), ZA	daily rain	42.0 mm (1.7 in)	21.7 mm (0.9 in)	84 years	56 of 100 (Notable)
5 December 1990	Colesberg (Tnk), ZA	daily rain	46.4 mm (1.8 in)	9.1 mm (0.36 in)	89 years	43 of 100 (Notable)
27 June 1990	Colesberg (Tnk), ZA	monthly rain	29.0 mm (1.1 in)	2.4 mm (0.09 in)	3 years	23 of 100 (Routine)
20 June 1990	Colesberg (Tnk), ZA	daily rain	18.5 mm (0.7 in)	15.7 mm (0.6 in)	108 years	20 of 100 (Routine)
15 November 1989	Colesberg (Tnk), ZA	daily rain	16.8 mm (0.7 in)	0.3 mm (0.01 in)	58 years	20 of 100 (Routine)

Extremes by Year

1877 to 1997

Yearly extremes at Colesberg (Tnk): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	104.5 mm (4.1 in)	1992	40.0 mm (1.6 in)	121
Wettest five days (Rx5day)	178.5 mm (7.0 in)	1974	64.5 mm (2.5 in)	121
Longest dry spell (CDD)	136 days	1889	61 days	121

Wettest day (Rx1day)

The wettest day of the year at Colesberg (Tnk), 1877 to 1997. The record is 104.5 mm (4.1 in) in 1992, marked on the chart; the median year is 40.0 mm (1.6 in).

Wettest day (Rx1day) at Colesberg (Tnk) by year
Year	Wettest day (Rx1day)
1877	13.5 mm (0.5 in)
1878	38.1 mm (1.5 in)
1879	23.9 mm (0.9 in)
1880	37.3 mm (1.5 in)
1881	40.6 mm (1.6 in)
1882	35.6 mm (1.4 in)
1883	47.0 mm (1.9 in)
1884	40.6 mm (1.6 in)
1885	29.7 mm (1.2 in)
1886	33.0 mm (1.3 in)
1887	28.7 mm (1.1 in)
1888	27.2 mm (1.1 in)
1889	50.8 mm (2.0 in)
1890	31.8 mm (1.3 in)
1891	49.3 mm (1.9 in)
1892	50.0 mm (2.0 in)
1893	43.2 mm (1.7 in)
1894	33.0 mm (1.3 in)
1895	34.5 mm (1.4 in)
1896	38.6 mm (1.5 in)
1897	32.5 mm (1.3 in)
1898	62.2 mm (2.4 in)
1899	33.0 mm (1.3 in)
1900	41.4 mm (1.6 in)
1901	76.2 mm (3.0 in)
1902	31.0 mm (1.2 in)
1903	26.2 mm (1.0 in)
1904	50.8 mm (2.0 in)
1905	25.4 mm (1.0 in)
1906	34.0 mm (1.3 in)
1907	38.1 mm (1.5 in)
1908	38.6 mm (1.5 in)
1909	64.8 mm (2.6 in)
1910	41.4 mm (1.6 in)
1911	55.9 mm (2.2 in)
1912	49.0 mm (1.9 in)
1913	58.4 mm (2.3 in)
1914	34.3 mm (1.4 in)
1915	34.0 mm (1.3 in)
1916	31.2 mm (1.2 in)
1917	34.8 mm (1.4 in)
1918	77.5 mm (3.1 in)
1919	17.0 mm (0.7 in)
1920	33.0 mm (1.3 in)
1921	40.6 mm (1.6 in)
1922	25.4 mm (1.0 in)
1923	49.5 mm (1.9 in)
1924	61.0 mm (2.4 in)
1925	59.7 mm (2.4 in)
1926	44.5 mm (1.8 in)
1927	47.0 mm (1.9 in)
1928	38.1 mm (1.5 in)
1929	57.2 mm (2.3 in)
1930	39.4 mm (1.6 in)
1931	28.4 mm (1.1 in)
1932	53.6 mm (2.1 in)
1933	98.3 mm (3.9 in)
1934	54.9 mm (2.2 in)
1935	45.2 mm (1.8 in)
1936	59.4 mm (2.3 in)
1937	24.4 mm (1.0 in)
1938	61.5 mm (2.4 in)
1939	68.3 mm (2.7 in)
1940	48.5 mm (1.9 in)
1941	32.5 mm (1.3 in)
1942	54.6 mm (2.1 in)
1943	37.1 mm (1.5 in)
1944	44.7 mm (1.8 in)
1945	30.2 mm (1.2 in)
1946	51.1 mm (2.0 in)
1947	22.1 mm (0.9 in)
1948	46.7 mm (1.8 in)
1949	38.9 mm (1.5 in)
1950	50.5 mm (2.0 in)
1951	25.9 mm (1.0 in)
1952	35.8 mm (1.4 in)
1953	40.0 mm (1.6 in)
1954	30.5 mm (1.2 in)
1955	35.5 mm (1.4 in)
1956	37.5 mm (1.5 in)
1957	41.0 mm (1.6 in)
1958	25.0 mm (1.0 in)
1959	37.5 mm (1.5 in)
1960	49.0 mm (1.9 in)
1961	54.5 mm (2.1 in)
1962	32.5 mm (1.3 in)
1963	59.5 mm (2.3 in)
1964	58.0 mm (2.3 in)
1965	39.0 mm (1.5 in)
1966	25.0 mm (1.0 in)
1967	40.0 mm (1.6 in)
1968	31.5 mm (1.2 in)
1969	54.0 mm (2.1 in)
1970	45.5 mm (1.8 in)
1971	37.0 mm (1.5 in)
1972	85.0 mm (3.3 in)
1973	38.0 mm (1.5 in)
1974	53.0 mm (2.1 in)
1975	44.0 mm (1.7 in)
1976	96.0 mm (3.8 in)
1977	34.5 mm (1.4 in)
1978	59.0 mm (2.3 in)
1979	40.0 mm (1.6 in)
1980	47.5 mm (1.9 in)
1981	44.0 mm (1.7 in)
1982	25.1 mm (1.0 in)
1983	26.5 mm (1.0 in)
1984	27.2 mm (1.1 in)
1985	37.5 mm (1.5 in)
1986	34.7 mm (1.4 in)
1987	50.1 mm (2.0 in)
1988	54.8 mm (2.2 in)
1989	81.7 mm (3.2 in)
1990	46.4 mm (1.8 in)
1991	42.0 mm (1.7 in)
1992	104.5 mm (4.1 in)
1993	40.0 mm (1.6 in)
1994	23.0 mm (0.9 in)
1995	51.0 mm (2.0 in)
1996	27.5 mm (1.1 in)
1997	33.0 mm (1.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Colesberg (Tnk), 1877 to 1997. The record is 178.5 mm (7.0 in) in 1974, marked on the chart; the median year is 64.5 mm (2.5 in).

Wettest five days (Rx5day) at Colesberg (Tnk) by year
Year	Wettest five days (Rx5day)
1877	13.5 mm (0.5 in)
1878	44.9 mm (1.8 in)
1879	36.4 mm (1.4 in)
1880	69.0 mm (2.7 in)
1881	53.0 mm (2.1 in)
1882	68.3 mm (2.7 in)
1883	82.8 mm (3.3 in)
1884	86.8 mm (3.4 in)
1885	48.4 mm (1.9 in)
1886	50.0 mm (2.0 in)
1887	51.9 mm (2.0 in)
1888	61.5 mm (2.4 in)
1889	96.5 mm (3.8 in)
1890	45.5 mm (1.8 in)
1891	63.9 mm (2.5 in)
1892	75.5 mm (3.0 in)
1893	69.4 mm (2.7 in)
1894	58.7 mm (2.3 in)
1895	42.4 mm (1.7 in)
1896	54.6 mm (2.1 in)
1897	48.0 mm (1.9 in)
1898	103.1 mm (4.1 in)
1899	78.3 mm (3.1 in)
1900	99.3 mm (3.9 in)
1901	109.5 mm (4.3 in)
1902	58.4 mm (2.3 in)
1903	26.2 mm (1.0 in)
1904	60.2 mm (2.4 in)
1905	50.8 mm (2.0 in)
1906	67.8 mm (2.7 in)
1907	83.9 mm (3.3 in)
1908	58.9 mm (2.3 in)
1909	93.5 mm (3.7 in)
1910	84.6 mm (3.3 in)
1911	81.1 mm (3.2 in)
1912	73.1 mm (2.9 in)
1913	73.1 mm (2.9 in)
1914	50.3 mm (2.0 in)
1915	40.8 mm (1.6 in)
1916	42.2 mm (1.7 in)
1917	77.0 mm (3.0 in)
1918	100.7 mm (4.0 in)
1919	42.5 mm (1.7 in)
1920	66.0 mm (2.6 in)
1921	71.2 mm (2.8 in)
1922	35.6 mm (1.4 in)
1923	49.5 mm (1.9 in)
1924	87.6 mm (3.4 in)
1925	72.4 mm (2.9 in)
1926	57.2 mm (2.3 in)
1927	56.9 mm (2.2 in)
1928	50.1 mm (2.0 in)
1929	73.2 mm (2.9 in)
1930	54.6 mm (2.1 in)
1931	82.5 mm (3.2 in)
1932	85.3 mm (3.4 in)
1933	112.5 mm (4.4 in)
1934	153.2 mm (6.0 in)
1935	74.5 mm (2.9 in)
1936	70.8 mm (2.8 in)
1937	40.7 mm (1.6 in)
1938	85.4 mm (3.4 in)
1939	131.8 mm (5.2 in)
1940	71.8 mm (2.8 in)
1941	44.1 mm (1.7 in)
1942	62.7 mm (2.5 in)
1943	70.5 mm (2.8 in)
1944	95.1 mm (3.7 in)
1945	30.2 mm (1.2 in)
1946	66.6 mm (2.6 in)
1947	36.5 mm (1.4 in)
1948	78.2 mm (3.1 in)
1949	42.2 mm (1.7 in)
1950	85.1 mm (3.4 in)
1951	51.0 mm (2.0 in)
1952	75.4 mm (3.0 in)
1953	72.5 mm (2.9 in)
1954	64.8 mm (2.6 in)
1955	60.0 mm (2.4 in)
1956	63.1 mm (2.5 in)
1957	46.5 mm (1.8 in)
1958	71.0 mm (2.8 in)
1959	52.7 mm (2.1 in)
1960	50.1 mm (2.0 in)
1961	73.0 mm (2.9 in)
1962	65.2 mm (2.6 in)
1963	84.1 mm (3.3 in)
1964	96.5 mm (3.8 in)
1965	47.0 mm (1.9 in)
1966	25.5 mm (1.0 in)
1967	85.7 mm (3.4 in)
1968	40.5 mm (1.6 in)
1969	74.5 mm (2.9 in)
1970	47.0 mm (1.9 in)
1971	72.0 mm (2.8 in)
1972	87.0 mm (3.4 in)
1973	55.5 mm (2.2 in)
1974	178.5 mm (7.0 in)
1975	70.5 mm (2.8 in)
1976	155.5 mm (6.1 in)
1977	44.0 mm (1.7 in)
1978	61.5 mm (2.4 in)
1979	41.0 mm (1.6 in)
1980	54.0 mm (2.1 in)
1981	64.5 mm (2.5 in)
1982	35.7 mm (1.4 in)
1983	37.5 mm (1.5 in)
1984	46.6 mm (1.8 in)
1985	56.8 mm (2.2 in)
1986	41.2 mm (1.6 in)
1987	99.6 mm (3.9 in)
1988	92.5 mm (3.6 in)
1989	88.9 mm (3.5 in)
1990	48.6 mm (1.9 in)
1991	99.9 mm (3.9 in)
1992	113.0 mm (4.4 in)
1993	62.0 mm (2.4 in)
1994	40.7 mm (1.6 in)
1995	81.5 mm (3.2 in)
1996	43.5 mm (1.7 in)
1997	61.0 mm (2.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Colesberg (Tnk), 1877 to 1997. The record is 136 days in 1889, marked on the chart; the median year is 61 days.

Longest dry spell (CDD) at Colesberg (Tnk) by year
Year	Longest dry spell (CDD)
1877	15 days
1878	70 days
1879	80 days
1880	76 days
1881	51 days
1882	46 days
1883	90 days
1884	103 days
1885	73 days
1886	40 days
1887	48 days
1888	61 days
1889	136 days
1890	66 days
1891	35 days
1892	42 days
1893	39 days
1894	68 days
1895	55 days
1896	77 days
1897	54 days
1898	67 days
1899	48 days
1900	49 days
1901	62 days
1902	41 days
1903	127 days
1904	80 days
1905	53 days
1906	125 days
1907	90 days
1908	45 days
1909	106 days
1910	61 days
1911	49 days
1912	59 days
1913	71 days
1914	60 days
1915	65 days
1916	67 days
1917	51 days
1918	51 days
1919	119 days
1920	127 days
1921	31 days
1922	74 days
1923	43 days
1924	58 days
1925	53 days
1926	105 days
1927	115 days
1928	120 days
1929	55 days
1930	67 days
1931	78 days
1932	62 days
1933	62 days
1934	76 days
1935	45 days
1936	58 days
1937	82 days
1938	45 days
1939	57 days
1940	62 days
1941	53 days
1942	66 days
1943	69 days
1944	65 days
1945	58 days
1946	39 days
1947	56 days
1948	92 days
1949	75 days
1950	34 days
1951	70 days
1952	32 days
1953	61 days
1954	104 days
1955	79 days
1956	58 days
1957	55 days
1958	107 days
1959	106 days
1960	34 days
1961	69 days
1962	71 days
1963	60 days
1964	60 days
1965	43 days
1966	85 days
1967	50 days
1968	106 days
1969	75 days
1970	69 days
1971	64 days
1972	81 days
1973	82 days
1974	77 days
1975	74 days
1976	66 days
1977	78 days
1978	53 days
1979	33 days
1980	59 days
1981	57 days
1982	49 days
1983	47 days
1984	51 days
1985	76 days
1986	61 days
1987	31 days
1988	61 days
1989	28 days
1990	47 days
1991	69 days
1992	53 days
1993	38 days
1994	72 days
1995	91 days
1996	28 days
1997	39 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

115 years, 1879 to 1997

A day with at least 40.3 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 98.8 mm (3.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Colesberg (Tnk): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	40.3 mm (1.6 in)
5 years	53.9 mm (2.1 in)
10 years	63.7 mm (2.5 in)
25 years	77.0 mm (3.0 in)
50 years	87.6 mm (3.4 in)
100 years	98.8 mm (3.9 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 115 years of values from 1879 to 1997.

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: 104.5 mm (4.1 in) in 1992; 98.3 mm (3.9 in) in 1933; 96.0 mm (3.8 in) in 1976.

Download the Data

Data for Colesberg (Tnk) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Colesberg (Tnk) 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