Opsoek (Pos) Weather Records (SF000468980)

Record envelope, standing records and threshold days for Opsoek (Pos) (SF000468980), South Africa, with 67 years of record.

Key Facts for Opsoek (Pos)

Opsoek (Pos) (SF000468980) is a weather station in South Africa at -33.47 latitude and 21.50 longitude, 518 m (1,699 ft) above sea level.
The station reports from 1924 to 1990, 67 years of record.
0 records set at Opsoek (Pos) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Opsoek (Pos) set a daily record precipitation of 15.5 mm (0.6 in) on 21 April 1990.

About the Station

Location: South Africa, -33.47 latitude, 21.50 longitude.
Elevation: 518 m (1,699 ft).
Period of record: 1924 to 1990, 67 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 Opsoek (Pos). 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 Opsoek (Pos), 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 Opsoek (Pos) still stand.

All-Time Record Progression

1 new records

1 all-time records were set at Opsoek (Pos) between 24 January 1981 and 24 January 1981. Each dot is a new record.

Wettest Day of Each Month

Jan: 97.0 mm (3.8 in)

The wettest day on record for each calendar month at Opsoek (Pos). The most was 97.0 mm (3.8 in) on 24 January 1981.

Record daily precipitation for each month at Opsoek (Pos)
Month	Record daily precipitation (mm)	Date
Jan	97.0 mm (3.8 in)	24 January 1981
Feb	77.0 mm (3.0 in)	21 February 1957
Mar	69.0 mm (2.7 in)	27 March 1961
Apr	47.0 mm (1.9 in)	14 April 1989
May	28.0 mm (1.1 in)	28 May 1981
Jun	33.0 mm (1.3 in)	21 June 1953
Jul	40.0 mm (1.6 in)	21 July 1953
Aug	50.0 mm (2.0 in)	27 August 1988
Sep	49.0 mm (1.9 in)	22 September 1987
Oct	60.5 mm (2.4 in)	23 October 1926
Nov	45.5 mm (1.8 in)	14 November 1943
Dec	95.3 mm (3.8 in)	31 December 1931

Latest Records

Latest records at Opsoek (Pos)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 April 1990	Opsoek (Pos), ZA	daily rain	15.5 mm (0.6 in)	3.3 mm (0.13 in)	0 years	9 of 100 (Routine)
15 January 1990	Opsoek (Pos), ZA	daily rain	26.5 mm (1.0 in)	10.5 mm (0.4 in)	8 years	15 of 100 (Routine)
15 November 1989	Opsoek (Pos), ZA	daily rain	31.5 mm (1.2 in)	8.4 mm (0.33 in)	40 years	27 of 100 (Routine)
27 October 1989	Opsoek (Pos), ZA	daily rain	14.5 mm (0.6 in)	3.8 mm (0.15 in)	54 years	20 of 100 (Routine)
1 October 1989	Opsoek (Pos), ZA	daily rain	18.0 mm (0.7 in)	7.8 mm (0.31 in)	58 years	20 of 100 (Routine)
19 August 1989	Opsoek (Pos), ZA	daily rain	11.5 mm (0.5 in)	0.5 mm (0.02 in)	24 years	13 of 100 (Routine)
22 April 1989	Opsoek (Pos), ZA	daily rain	9.5 mm (0.37 in)	2.0 mm (0.08 in)	28 years	16 of 100 (Routine)
21 April 1989	Opsoek (Pos), ZA	daily rain	12.2 mm (0.5 in)	5.1 mm (0.20 in)	46 years	20 of 100 (Routine)
14 April 1989	Opsoek (Pos), ZA	monthly rain	47.0 mm (1.9 in)	4.0 mm (0.16 in)	7 years	22 of 100 (Routine)
13 March 1989	Opsoek (Pos), ZA	daily rain	35.0 mm (1.4 in)	22.4 mm (0.9 in)	28 years	39 of 100 (Notable)
22 January 1989	Opsoek (Pos), ZA	daily rain	1.4 mm (0.06 in)	0.4 mm (0.02 in)	29 years	14 of 100 (Routine)
28 December 1988	Opsoek (Pos), ZA	daily rain	17.0 mm (0.7 in)	3.0 mm (0.12 in)	57 years	20 of 100 (Routine)
19 December 1988	Opsoek (Pos), ZA	daily rain	29.0 mm (1.1 in)	7.8 mm (0.31 in)	3 years	12 of 100 (Routine)
10 December 1988	Opsoek (Pos), ZA	daily rain	5.5 mm (0.22 in)	2.5 mm (0.10 in)	21 years	14 of 100 (Routine)
27 August 1988	Opsoek (Pos), ZA	monthly rain	50.0 mm (2.0 in)	11.0 mm (0.4 in)	34 years	42 of 100 (Notable)
12 July 1988	Opsoek (Pos), ZA	daily rain	1.7 mm (0.07 in)	1.7 mm (0.07 in)	64 years	20 of 100 (Routine)
14 June 1988	Opsoek (Pos), ZA	daily rain	4.0 mm (0.16 in)	3.0 mm (0.12 in)	30 years	20 of 100 (Routine)
9 March 1988	Opsoek (Pos), ZA	daily rain	19.0 mm (0.7 in)	8.5 mm (0.33 in)	13 years	18 of 100 (Routine)
19 February 1988	Opsoek (Pos), ZA	daily rain	6.7 mm (0.26 in)	6.7 mm (0.26 in)	61 years	20 of 100 (Routine)
18 February 1988	Opsoek (Pos), ZA	daily rain	13.5 mm (0.5 in)	1.5 mm (0.06 in)	24 years	14 of 100 (Routine)

Extremes by Year

1924 to 1990

Yearly extremes at Opsoek (Pos): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	97.0 mm (3.8 in)	1981	32.5 mm (1.3 in)	67
Wettest five days (Rx5day)	225.8 mm (8.9 in)	1932	45.9 mm (1.8 in)	67
Longest dry spell (CDD)	133 days	1928	47 days	67

Wettest day (Rx1day)

The wettest day of the year at Opsoek (Pos), 1924 to 1990. The record is 97.0 mm (3.8 in) in 1981, marked on the chart; the median year is 32.5 mm (1.3 in).

Wettest day (Rx1day) at Opsoek (Pos) by year
Year	Wettest day (Rx1day)
1924	18.8 mm (0.7 in)
1925	34.3 mm (1.4 in)
1926	60.5 mm (2.4 in)
1927	24.1 mm (0.9 in)
1928	63.5 mm (2.5 in)
1929	31.8 mm (1.3 in)
1930	20.3 mm (0.8 in)
1931	95.3 mm (3.8 in)
1932	78.7 mm (3.1 in)
1933	35.1 mm (1.4 in)
1934	28.4 mm (1.1 in)
1935	40.9 mm (1.6 in)
1936	36.8 mm (1.4 in)
1937	18.3 mm (0.7 in)
1938	30.5 mm (1.2 in)
1939	19.8 mm (0.8 in)
1940	30.5 mm (1.2 in)
1941	40.6 mm (1.6 in)
1942	25.9 mm (1.0 in)
1943	45.5 mm (1.8 in)
1944	26.4 mm (1.0 in)
1945	26.4 mm (1.0 in)
1946	20.6 mm (0.8 in)
1947	22.1 mm (0.9 in)
1948	18.3 mm (0.7 in)
1949	23.1 mm (0.9 in)
1950	40.6 mm (1.6 in)
1951	55.4 mm (2.2 in)
1952	33.0 mm (1.3 in)
1953	40.0 mm (1.6 in)
1954	39.0 mm (1.5 in)
1955	24.0 mm (0.9 in)
1956	32.0 mm (1.3 in)
1957	77.0 mm (3.0 in)
1958	30.5 mm (1.2 in)
1959	32.3 mm (1.3 in)
1960	40.0 mm (1.6 in)
1961	69.0 mm (2.7 in)
1962	35.0 mm (1.4 in)
1963	36.4 mm (1.4 in)
1964	40.0 mm (1.6 in)
1965	45.5 mm (1.8 in)
1966	25.5 mm (1.0 in)
1967	32.5 mm (1.3 in)
1968	27.5 mm (1.1 in)
1969	21.5 mm (0.8 in)
1970	38.5 mm (1.5 in)
1971	29.0 mm (1.1 in)
1972	39.0 mm (1.5 in)
1973	26.0 mm (1.0 in)
1974	29.5 mm (1.2 in)
1975	26.0 mm (1.0 in)
1976	32.0 mm (1.3 in)
1977	39.0 mm (1.5 in)
1978	24.5 mm (1.0 in)
1979	30.0 mm (1.2 in)
1980	43.0 mm (1.7 in)
1981	97.0 mm (3.8 in)
1982	27.5 mm (1.1 in)
1983	37.5 mm (1.5 in)
1984	15.5 mm (0.6 in)
1985	34.0 mm (1.3 in)
1986	60.2 mm (2.4 in)
1987	49.0 mm (1.9 in)
1988	50.0 mm (2.0 in)
1989	47.0 mm (1.9 in)
1990	26.5 mm (1.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Opsoek (Pos), 1924 to 1990. The record is 225.8 mm (8.9 in) in 1932, marked on the chart; the median year is 45.9 mm (1.8 in).

Wettest five days (Rx5day) at Opsoek (Pos) by year
Year	Wettest five days (Rx5day)
1924	18.8 mm (0.7 in)
1925	35.0 mm (1.4 in)
1926	68.1 mm (2.7 in)
1927	28.0 mm (1.1 in)
1928	63.5 mm (2.5 in)
1929	31.8 mm (1.3 in)
1930	25.1 mm (1.0 in)
1931	147.1 mm (5.8 in)
1932	225.8 mm (8.9 in)
1933	38.1 mm (1.5 in)
1934	28.4 mm (1.1 in)
1935	51.5 mm (2.0 in)
1936	54.4 mm (2.1 in)
1937	56.9 mm (2.2 in)
1938	30.5 mm (1.2 in)
1939	30.5 mm (1.2 in)
1940	57.7 mm (2.3 in)
1941	73.6 mm (2.9 in)
1942	40.1 mm (1.6 in)
1943	48.0 mm (1.9 in)
1944	30.7 mm (1.2 in)
1945	44.6 mm (1.8 in)
1946	52.6 mm (2.1 in)
1947	36.3 mm (1.4 in)
1948	52.6 mm (2.1 in)
1949	45.9 mm (1.8 in)
1950	44.4 mm (1.7 in)
1951	82.6 mm (3.3 in)
1952	44.7 mm (1.8 in)
1953	44.3 mm (1.7 in)
1954	77.0 mm (3.0 in)
1955	35.0 mm (1.4 in)
1956	42.5 mm (1.7 in)
1957	77.0 mm (3.0 in)
1958	38.0 mm (1.5 in)
1959	32.3 mm (1.3 in)
1960	40.0 mm (1.6 in)
1961	69.0 mm (2.7 in)
1962	55.0 mm (2.2 in)
1963	42.4 mm (1.7 in)
1964	104.5 mm (4.1 in)
1965	81.5 mm (3.2 in)
1966	34.0 mm (1.3 in)
1967	57.5 mm (2.3 in)
1968	27.5 mm (1.1 in)
1969	36.5 mm (1.4 in)
1970	45.5 mm (1.8 in)
1971	47.0 mm (1.9 in)
1972	74.0 mm (2.9 in)
1973	26.0 mm (1.0 in)
1974	33.0 mm (1.3 in)
1975	48.0 mm (1.9 in)
1976	53.0 mm (2.1 in)
1977	43.5 mm (1.7 in)
1978	32.0 mm (1.3 in)
1979	48.5 mm (1.9 in)
1980	58.7 mm (2.3 in)
1981	174.5 mm (6.9 in)
1982	58.0 mm (2.3 in)
1983	55.0 mm (2.2 in)
1984	29.0 mm (1.1 in)
1985	44.0 mm (1.7 in)
1986	60.3 mm (2.4 in)
1987	64.9 mm (2.6 in)
1988	55.0 mm (2.2 in)
1989	64.1 mm (2.5 in)
1990	42.0 mm (1.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Opsoek (Pos), 1924 to 1990. The record is 133 days in 1928, marked on the chart; the median year is 47 days.

Longest dry spell (CDD) at Opsoek (Pos) by year
Year	Longest dry spell (CDD)
1924	33 days
1925	31 days
1926	47 days
1927	109 days
1928	133 days
1929	15 days
1930	49 days
1931	45 days
1932	40 days
1933	65 days
1934	57 days
1935	46 days
1936	87 days
1937	40 days
1938	39 days
1939	37 days
1940	49 days
1941	62 days
1942	47 days
1943	31 days
1944	69 days
1945	46 days
1946	100 days
1947	62 days
1948	43 days
1949	53 days
1950	50 days
1951	88 days
1952	65 days
1953	38 days
1954	75 days
1955	32 days
1956	43 days
1957	57 days
1958	51 days
1959	59 days
1960	44 days
1961	51 days
1962	40 days
1963	69 days
1964	55 days
1965	46 days
1966	57 days
1967	43 days
1968	56 days
1969	66 days
1970	55 days
1971	69 days
1972	47 days
1973	48 days
1974	26 days
1975	55 days
1976	36 days
1977	26 days
1978	36 days
1979	35 days
1980	33 days
1981	28 days
1982	36 days
1983	30 days
1984	66 days
1985	40 days
1986	36 days
1987	65 days
1988	45 days
1989	25 days
1990	16 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

62 years, 1927 to 1989

A day with at least 32.9 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 106.6 mm (4.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Opsoek (Pos): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	32.9 mm (1.3 in)
5 years	46.6 mm (1.8 in)
10 years	57.7 mm (2.3 in)
25 years	74.5 mm (2.9 in)
50 years	89.4 mm (3.5 in)
100 years	106.6 mm (4.2 in)	Longer than the 62 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, 62 years of values from 1927 to 1989.

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: 97.0 mm (3.8 in) in 1981; 95.3 mm (3.8 in) in 1931; 78.7 mm (3.1 in) in 1932.

Download the Data

Data for Opsoek (Pos) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Opsoek (Pos) 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 2026-10-14 (14 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